##### Table of Contents

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549



FORM
10-Q



(Mark One)



x    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2006 or



 ̈    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the
transition period from  to



|                       |  |                                                                                                                                                             |  |                                   
|---------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------
|Commission File
Number |  | Registrant, State of Incorporation, Address and Telephone Number                                                                                            |  | I.R.S. Employer Identification No.
|                       |  |                                                                                                                                                            
|1-1232                 |  | DUKE ENERGY OHIO, INC. (Formerly the Cincinnati Gas & Electric Company)  (An Ohio Corporation) 139 East Fourth Street Cincinnati, Ohio 45202 (513) 421-9500 |  | 31-0240030                        



Indicate by check mark whether the registrant
(1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrants were required to file such reports), and
(2) has been subject to such filing requirements for the past 90 days. Yes x No  ̈



Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a
non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Securities Exchange Act of 1934.

Large
accelerated filer  ̈                  Accelerated filer  ̈                 
Non-accelerated filer x



Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes  ̈ No x



Duke Energy Ohio, Inc. meets the conditions set forth in General Instruction H(1)(a) and (b) of
Form 10-Q and is therefore filing this form with the reduced disclosure format specified in General Instruction H(2) of Form 10-Q.



As of October 31, 2006, shares of common stock outstanding were as follows:



|                       |  |                           |  |           
|---------------------- |  | ------------------------- |  | ----------
|Registrant             |  | Description               |  | Shares    
|Duke Energy Ohio, Inc. |  | Par value $8.50 per share |  | 89,663,086







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##### Table of Contents

TABLE OF CONTENTS





|                              |  |                                                                                                                                                                                                                                           |  |            
|----------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -----------
|Item Number                   |  |                                                                                                                                                                                                                                           |  | Page Number
|PART I. FINANCIAL INFORMATION |  |                                                                                                                                                                                                                                          
|                              |  |                                                                                                                                                                                                                                          
|1.                            |  | Financial Statements                                                                                                                                                                                                                      |  |            
|                              |  | Consolidated Statements of Operations for the Three Months Ended March 31, 2006; September 30, 2006 and 2005; Six Months Ended September 30, 2006 and the Nine Months Ended September 30, 2005, as revised                                |  | 3          
|                              |  | Consolidated Balance Sheets as of September 30, 2006 and December 31, 2005, as revised                                                                                                                                                    |  | 4          
|                              |  | Consolidated Statements of Changes in Common Stockholders Equity and Comprehensive Income (Loss) for the Three Months Ended March 31, 2006, Six Months Ended September 30, 2006 and the Nine Months Ended September 30, 2005,
as revised |  | 6          
|                              |  | Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2006, Six Months Ended September 30, 2006 and the Nine Months Ended September 30, 2005, as revised                                                             |  | 7          
|                              |  | Notes to Unaudited Consolidated Financial Statements                                                                                                                                                                                      |  | 8          
|                              |  |                                                                                                                                                                                                                                          
|2.                            |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                                                                                                                                                     |  |            
|                              |  | Cinergy Merger with Duke Energy                                                                                                                                                                                                           |  | 34         
|                              |  | Results of Operations                                                                                                                                                                                                                     |  | 35         
|                              |  |                                                                                                                                                                                                                                          
|4.                            |  | Controls and Procedures                                                                                                                                                                                                                   |  | 38         
|                              | 
|PART II. OTHER INFORMATION    |  |                                                                                                                                                                                                                                          
|                              |  |                                                                                                                                                                                                                                          
|1.                            |  | Legal Proceedings                                                                                                                                                                                                                         |  | 39         
|                              |  |                                                                                                                                                                                                                                          
|1A.                           |  | Risk Factors                                                                                                                                                                                                                              |  | 39         
|                              |  |                                                                                                                                                                                                                                          
|6.                            |  | Exhibits                                                                                                                                                                                                                                  |  | 40         
|                              |  |                                                                                                                                                                                                                                          
|                              |  | Signatures                                                                                                                                                                                                                                |  | 41         



CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION





This document includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934. Forward-looking statements are based on managements beliefs and assumptions. These forward-looking statements are identified by terms and phrases such as anticipate, believe, intend,
estimate, expect, continue, should, could, may, plan, project, predict, will, potential, forecast, and
similar expressions. Forward-looking statements involve risks and uncertainties that may cause actual results to be materially different from the results predicted. Factors that could cause actual results to differ materially from those indicated in
any forward-looking statement include, but are not limited to:

| |  |  | State and federal legislative and regulatory initiatives, including costs of compliance with existing and future environmental requirements;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | Costs and effects of legal and administrative proceedings, settlements, investigations and claims;
| | - |  | --------------------------------------------------------------------------------------------------

| |  |  | Industrial, commercial and residential growth in Duke Energy Ohio, Incs (Duke Energy Ohio) service territories;
| | - |  | ----------------------------------------------------------------------------------------------------------------

| |  |  | Additional competition in electric markets and continued industry consolidation;
| | - |  | --------------------------------------------------------------------------------

| |  |  | The influence of weather and other natural phenomena on company operations, including the economic, operational and other effects of hurricanes and ice storms;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | The timing and extent of changes in commodity prices and interest rates;
| | - |  | ------------------------------------------------------------------------

| |  |  | Unscheduled generation outages, unusual maintenance or repairs and electric transmission system constraints;
| | - |  | ------------------------------------------------------------------------------------------------------------

| |  |  | The results of financing efforts, including Duke Energy Ohios ability to obtain financing on favorable terms, which can be affected by various factors, including Duke Energy Ohios
credit ratings and general economic conditions;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | Declines in the market prices of equity securities and resultant cash funding requirements of Duke Energy Ohio for Duke Energys defined benefit pension plans;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | The level of credit worthiness of counterparties to Duke Energy Ohios transactions;
| | - |  | ------------------------------------------------------------------------------------

| |  |  | Employee workforce factors, including the potential inability to attract and retain key personnel;
| | - |  | --------------------------------------------------------------------------------------------------

| |  |  | Growth in opportunities for Duke Energy Ohios business units, including the timing and success of efforts to develop domestic power and other projects;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | The performance of electric generation facilities;
| | - |  | --------------------------------------------------

| |  |  | The extent of success in connecting and expanding electric markets; and
| | - |  | -----------------------------------------------------------------------

| |  |  | The effect of accounting pronouncements issued periodically by accounting standard-setting bodies
| | - |  | -------------------------------------------------------------------------------------------------

In light of these risks, uncertainties and assumptions, the events described in the forward-looking statements might not occur or might occur to a different extent or at a different time than Duke Energy Ohio has described.
Duke Energy Ohio undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.



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##### Table of Contents

PART I. FINANCIAL INFORMATION

DUKE ENERGY OHIO, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(In thousands)



|                                                                       |  |                                 |         |   |                               |   |             |   |  |                             |  |   |                                 |   |                                |   |         |  |   |          
|---------------------------------------------------------------------- |  | ------------------------------- | ------- | - | ----------------------------- | - | ----------- | - |  | --------------------------- |  | - | ------------------------------- | - | ------------------------------ | - | ------- |  | - | ---------
|                                                                       |  | Successor                       |         |   |                               |   | Predecessor
|                                                                       |  | Three Months EndedSeptember 30, |         |   | Six Months EndedSeptember 30, |   |             |   |  | Three Months EndedMarch 31, |  |   | Three Months EndedSeptember 30, |   | Nine Months EndedSeptember 30,
|                                                                       |  | 2006                            |         |   | 2006                          |   |             |   |  | 2006                        |  |   | 2005                            |   | 2005                          
|Operating Revenues                                                     |  |                                 |         |   |                               |   |             |   |  |                             |  |   |                                 |   |                                |   |         |  |   |          
|Non-regulated electric, natural gas, natural gas liquids and other     |  | $                               | 468,457 |   |                               | $ | 867,842     |   |  |                             |  | $ | 421,069                         |   |                                | $ | 344,362 |  | $ | 944,196  
|Regulated electric                                                     |  |                                 | 236,441 |   |                               |   | 439,063     |   |  |                             |  |   | 219,845                         |   |                                |   | 176,041 |  |   | 470,102  
|Regulated natural gas and natural gas liquids                          |  |                                 | 71,425  |   |                               |   | 165,252     |   |  |                             |  |   | 321,965                         |   |                                |   | 69,148  |  |   | 475,970  
|Total operating revenues                                               |  |                                 | 776,323 |   |                               |   | 1,472,157   |   |  |                             |  |   | 962,879                         |   |                                |   | 589,551 |  |   | 1,890,268
|Operating Expenses                                                     |  |                                 |         |   |                               |   |             |   |  |                             |  |   |                                 |   |                                |   |         |  |   |          
|Natural gas and petroleum products purchased                           |  |                                 | 31,030  |   |                               |   | 82,023      |   |  |                             |  |   | 232,006                         |   |                                |   | 31,264  |  |   | 295,135  
|Operation, maintenance and other                                       |  |                                 | 168,168 |   |                               |   | 341,081     |   |  |                             |  |   | 173,180                         |   |                                |   | 127,092 |  |   | 417,267  
|Fuel used in electric generation and purchased power                   |  |                                 | 297,939 |   |                               |   | 547,618     |   |  |                             |  |   | 195,852                         |   |                                |   | 201,484 |  |   | 481,995  
|Costs of fuel resold                                                   |  |                                 | 29,917  |   |                               |   | 58,451      |   |  |                             |  |   | 44,291                          |   |                                |   | 47,310  |  |   | 137,528  
|Depreciation and amortization                                          |  |                                 | 94,478  |   |                               |   | 187,066     |   |  |                             |  |   | 67,918                          |   |                                |   | 74,718  |  |   | 200,491  
|Property and other taxes                                               |  |                                 | 56,054  |   |                               |   | 110,897     |   |  |                             |  |   | 68,192                          |   |                                |   | 51,392  |  |   | 162,938  
|Total operating expenses                                               |  |                                 | 677,586 |   |                               |   | 1,327,136   |   |  |                             |  |   | 781,439                         |   |                                |   | 533,260 |  |   | 1,695,354
|(Losses) Gains on Sales of Other Assets and Other, net                 |  |                                 | (9,066  | ) |                               |   | (14,293     | ) |  |                             |  |   | 26,069                          |   |                                |   | 33,160  |  |   | 103,845  
|Operating Income                                                       |  |                                 | 89,671  |   |                               |   | 130,728     |   |  |                             |  |   | 207,509                         |   |                                |   | 89,451  |  |   | 298,759  
|Other Income and Expenses, net                                         |  |                                 | 6,051   |   |                               |   | 12,937      |   |  |                             |  |   | 8,195                           |   |                                |   | 4,610   |  |   | 11,908   
|Interest Expense                                                       |  |                                 | 25,484  |   |                               |   | 53,879      |   |  |                             |  |   | 29,680                          |   |                                |   | 26,829  |  |   | 72,845   
|Income from Continuing Operations Before Income Taxes                  |  |                                 | 70,238  |   |                               |   | 89,786      |   |  |                             |  |   | 186,024                         |   |                                |   | 67,232  |  |   | 237,822  
|Income Tax Expense from Continuing Operations                          |  |                                 | 28,936  |   |                               |   | 36,272      |   |  |                             |  |   | 67,810                          |   |                                |   | 19,972  |  |   | 79,048   
|Income from Continuing Operations                                      |  |                                 | 41,302  |   |                               |   | 53,514      |   |  |                             |  |   | 118,214                         |   |                                |   | 47,260  |  |   | 158,774  
|Income (Loss) from Discontinued Operations, net of tax                 |  |                                 | 19,051  |   |                               |   | (562        | ) |  |                             |  |   | (1,851                          | ) |                                |   | 15,425  |  |   | 42,200   
|Net Income                                                             |  |                                 | 60,353  |   |                               |   | 52,952      |   |  |                             |  |   | 116,363                         |   |                                |   | 62,685  |  |   | 200,974  
|Dividends and Premiums on Redemption of Preferred and Preference Stock |  |                                 |        |   |                               |   |            |   |  |                             |  |   | 164                             |   |                                |   | 211     |  |   | 634      
|Earnings Available for Common Stockholders                             |  | $                               | 60,353  |   |                               | $ | 52,952      |   |  |                             |  | $ | 116,199                         |   |                                | $ | 62,474  |  | $ | 200,340  
|                                                                      



See Notes to Unaudited
Consolidated Financial Statements



3



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In thousands)



|                                                                                                                     |  |                   |            |  |  |                  |   |          
|-------------------------------------------------------------------------------------------------------------------- |  | ----------------- | ---------- |  |  | ---------------- | - | ---------
|                                                                                                                     |  | Successor         |            |  |  | Predecessor     
|                                                                                                                     |  | September 30,2006 |            |  |  | December 31,2005
|ASSETS                                                                                                               |  |                   |            |  |  |                  |   |          
|Current Assets                                                                                                       |  |                   |            |  |  |                  |   |          
|Cash and cash equivalents                                                                                            |  | $                 | 39,625     |  |  |                  | $ | 9,674    
|Receivables (net of allowance for doubtful accounts of $4,839 at September 30, 2006 and $3,518 at December 31, 2005) |  |                   | 231,497    |  |  |                  |   | 422,162  
|Inventory                                                                                                            |  |                   | 134,902    |  |  |                  |   | 177,638  
|Assets held for sale                                                                                                 |  |                   | 136,012    |  |  |                  |   |         
|Unrealized gains on mark-to-market and hedging transactions                                                          |  |                   | 53,740     |  |  |                  |   | 543,787  
|Other                                                                                                                |  |                   | 75,910     |  |  |                  |   | 177,417  
|Total current assets                                                                                                 |  |                   | 671,686    |  |  |                  |   | 1,330,678
|Investments and Other Assets                                                                                         |  |                   |            |  |  |                  |   |          
|Restricted funds held in trust                                                                                       |  |                   | 51,530     |  |  |                  |   | 58,189   
|Goodwill                                                                                                             |  |                   | 2,176,527  |  |  |                  |   |         
|Intangible assets                                                                                                    |  |                   | 791,399    |  |  |                  |   | 105,275  
|Unrealized gains on mark-to-market and hedging transactions                                                          |  |                   | 33,558     |  |  |                  |   | 180,197  
|Assets held for sale                                                                                                 |  |                   | 74,661     |  |  |                  |   |         
|Other                                                                                                                |  |                   | 25,572     |  |  |                  |   | 27,067   
|Total investments and other assets                                                                                   |  |                   | 3,153,247  |  |  |                  |   | 370,728  
|Property, Plant and Equipment                                                                                        |  |                   |            |  |  |                  |   |          
|Cost                                                                                                                 |  |                   | 8,901,895  |  |  |                  |   | 7,775,765
|Less accumulated depreciation and amortization                                                                       |  |                   | 1,864,914  |  |  |                  |   | 2,815,852
|Net property, plant and equipment                                                                                    |  |                   | 7,036,981  |  |  |                  |   | 4,959,913
|Regulatory Assets and Deferred Debits                                                                                |  |                   |            |  |  |                  |   |          
|Deferred debt expense                                                                                                |  |                   | 23,545     |  |  |                  |   | 30,141   
|Regulatory assets related to income taxes                                                                            |  |                   | 95,606     |  |  |                  |   | 79,495   
|Other                                                                                                                |  |                   | 547,472    |  |  |                  |   | 462,888  
|Total regulatory assets and deferred debits                                                                          |  |                   | 666,623    |  |  |                  |   | 572,524  
|Total Assets                                                                                                         |  | $                 | 11,528,537 |  |  |                  | $ | 7,233,843
|                                                                                                                    



See Notes to Unaudited
Consolidated Financial Statements



4



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

CONSOLIDATED BALANCE SHEETS(Continued)

(Unaudited)

(In thousands, except per-share amounts)



|                                                                                                                                           |  |                   |            |   |  |  |                  |   |           |  
|------------------------------------------------------------------------------------------------------------------------------------------ |  | ----------------- | ---------- | - |  |  | ---------------- | - | --------- | -
|                                                                                                                                           |  | Successor         |            |   |  |  | Predecessor      |  
|                                                                                                                                           |  | September 30,2006 |            |   |  |  | December 31,2005 |  
|LIABILITIES AND COMMON STOCKHOLDERS EQUITY                                                                                                |  |                   |            |   |  |  |                  |   |           |  
|Current Liabilities                                                                                                                        |  |                   |            |   |  |  |                  |   |           |  
|Accounts payable                                                                                                                           |  | $                 | 308,073    |   |  |  |                  | $ | 629,751   |  
|Notes payable and commercial paper                                                                                                         |  |                   | 182,805    |   |  |  |                  |   | 226,352   |  
|Taxes accrued                                                                                                                              |  |                   | 341,483    |   |  |  |                  |   | 177,551   |  
|Interest accrued                                                                                                                           |  |                   | 23,616     |   |  |  |                  |   | 24,438    |  
|Liabilities associated with assets held for sale                                                                                           |  |                   | 121,936    |   |  |  |                  |   |          |  
|Current maturities of long-term debt and preferred stock                                                                                   |  |                   | 5,348      |   |  |  |                  |   | 5,042     |  
|Unrealized losses on mark-to-market and hedging transactions                                                                               |  |                   | 38,575     |   |  |  |                  |   | 552,105   |  
|Other                                                                                                                                      |  |                   | 93,984     |   |  |  |                  |   | 212,724   |  
|Total current liabilities                                                                                                                  |  |                   | 1,115,820  |   |  |  |                  |   | 1,827,963 |  
|Long-term Debt                                                                                                                             |  |                   | 1,866,692  |   |  |  |                  |   | 1,638,027 |  
|Deferred Credits and Other Liabilities                                                                                                     |  |                   |            |   |  |  |                  |   |           |  
|Deferred income taxes                                                                                                                      |  |                   | 1,474,088  |   |  |  |                  |   | 1,055,093 |  
|Investment tax credit                                                                                                                      |  |                   | 19,580     |   |  |  |                  |   | 67,229    |  
|Accrued pension and other postretirement benefit costs                                                                                     |  |                   | 365,547    |   |  |  |                  |   | 245,950   |  
|Regulatory liabilities                                                                                                                     |  |                   | 163,032    |   |  |  |                  |   | 151,670   |  
|Unrealized losses on mark-to-market and hedging transactions                                                                               |  |                   | 33,617     |   |  |  |                  |   | 186,835   |  
|Liabilities associated with assets held for sale                                                                                           |  |                   | 51,083     |   |  |  |                  |   |          |  
|Asset retirement obligations                                                                                                               |  |                   | 43,808     |   |  |  |                  |   | 41,423    |  
|Other                                                                                                                                      |  |                   | 193,528    |   |  |  |                  |   | 23,736    |  
|Total deferred credits and other liabilities                                                                                               |  |                   | 2,344,283  |   |  |  |                  |   | 1,771,936 |  
|Commitments and Contingencies                                                                                                              |  |                   |            |   |  |  |                  |   |           |  
|Cumulative Preferred Stock Not Subject to Mandatory Redemption                                                                             |  |                   |           |   |  |  |                  |   | 20,485    |  
|Common Stockholders Equity                                                                                                                |  |                   |            |   |  |  |                  |   |           |  
|Common stock, $8.50 par value; 120,000,000 shares authorized and 89,663,086 shares outstanding at September 30, 2006 and December 31,
2005 |  |                   | 762,136    |   |  |  |                  |   | 762,136   |  
|Paid-in capital                                                                                                                            |  |                   | 5,425,968  |   |  |  |                  |   | 603,249   |  
|Retained earnings                                                                                                                          |  |                   | 52,952     |   |  |  |                  |   | 657,254   |  
|Accumulated other comprehensive loss                                                                                                       |  |                   | (39,314    | ) |  |  |                  |   | (47,207   | )
|Total common stockholders equity                                                                                                          |  |                   | 6,201,742  |   |  |  |                  |   | 1,975,432 |  
|Total Liabilities and Common Stockholders Equity                                                                                          |  | $                 | 11,528,537 |   |  |  |                  | $ | 7,233,843 |  
|                                                                                                                                           | 



See Notes to Unaudited
Consolidated Financial Statements



5



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##### Table of Contents

PART 1



DUKE ENERGY OHIO, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCKHOLDER'S EQUITY

AND COMPREHENSIVE INCOME (LOSS)

(Unaudited)

(In thousands)



|                                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|---------------------------------------------------------------------- |  | ----------- | ------- | -------------- | - | ---------------- |  | - | ------------------------------------------- | - |  | ------------------------------ | ------- | - |  | - | --------- | -
|                                                                       |  | CommonStock |         | Paid-inCapital |   | RetainedEarnings |  |   | Accumulated OtherComprehensiveIncome (Loss) |   |  | TotalCommonStockholdersEquity |        
|Successor                                                              |  |             |         |                |   |                  |  |   |                                             |   |  |                                |        
|Six Months Ended September 30, 2006                                    |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Balance at April 1, 2006                                               |  | $           | 762,136 |                | $ | 3,973,777        |  | $ |                                            |   |  | $                              |        |   |  | $ | 4,735,913 |  
|Net income                                                             |  |             |         |                |   |                  |  |   | 52,952                                      |   |  |                                |         |   |  |   | 52,952    |  
|Other comprehensive income, net of tax effect of $436 Cash flow hedges |  |             |         |                |   |                  |  |   |                                             |   |  |                                | 342     |   |  |   | 342       |  
|                                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Total comprehensive income                                             |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   | 53,294    |  
|Transfer of generating assets from Duke Energy(1)                      |  |             |         |                |   | 1,452,191        |  |   |                                             |   |  |                                | (39,656 | ) |  |   | 1,412,535 |  
|Balance at September 30, 2006                                          |  | $           | 762,136 |                | $ | 5,425,968        |  | $ | 52,952                                      |   |  | $                              | (39,314 | ) |  | $ | 6,201,742 |  
|                                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|                                                                       |  |             |         |                |  
|Predecessor                                                            |  |             |         |                |   |                  |  |   |                                             |   |  |                                |        
|Three Months Ended March 31, 2006                                      |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Balance at January 1, 2006                                             |  | $           | 762,136 |                | $ | 603,249          |  | $ | 657,254                                     |   |  | $                              | (47,207 | ) |  | $ | 1,975,432 |  
|Net income                                                             |  |             |         |                |   |                  |  |   | 116,363                                     |   |  |                                |         |   |  |   | 116,363   |  
|Other comprehensive income, net of tax effect of $86                   |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Minimum pension liability adjustment                                   |  |             |         |                |   |                  |  |   |                                             |   |  |                                | 854     |   |  |   | 854       |  
|Cash flow hedges                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                | 897     |   |  |   | 897       |  
|                                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Total comprehensive income                                             |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   | 118,114   |  
|Dividends on common stock                                              |  |             |         |                |   |                  |  |   | (102,256                                    | ) |  |                                |         |   |  |   | (102,256  | )
|Dividends on preferred stock                                           |  |             |         |                |   |                  |  |   | (164                                        | ) |  |                                |         |   |  |   | (164      | )
|Other                                                                  |  |             |         |                |   |                  |  |   | (1                                          | ) |  |                                | 1       |   |  |   |          |  
|Balance at March 31, 2006                                              |  | $           | 762,136 |                | $ | 603,249          |  | $ | 671,196                                     |   |  | $                              | (45,455 | ) |  | $ | 1,991,126 |  
|Nine Months Ended September 30, 2005                                   |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Balance at January 1, 2005                                             |  | $           | 762,136 |                | $ | 584,176          |  | $ | 610,232                                     |   |  | $                              | (37,831 | ) |  | $ | 1,918,713 |  
|Net income                                                             |  |             |         |                |   |                  |  |   | 200,974                                     |   |  |                                |         |   |  |   | 200,974   |  
|Other comprehensive income, net of tax effect of $(2,289)              |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Minimum pension liability adjustment                                   |  |             |         |                |   |                  |  |   |                                             |   |  |                                | 332     |   |  |   | 332       |  
|Cash flow hedges                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                | 3,168   |   |  |   | 3,168     |  
|                                                                       |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   |           |  
|Total comprehensive income                                             |  |             |         |                |   |                  |  |   |                                             |   |  |                                |         |   |  |   | 204,474   |  
|Dividends on common stock                                              |  |             |         |                |   |                  |  |   | (250,086                                    | ) |  |                                |         |   |  |   | (250,086  | )
|Dividends on preferred stock                                           |  |             |         |                |   |                  |  |   | (846                                        | ) |  |                                |         |   |  |   | (846      | )
|Balance at September 30, 2005                                          |  | $           | 762,136 |                | $ | 584,176          |  | $ | 560,274                                     |   |  | $                              | (34,331 | ) |  | $ | 1,872,255 |  



|(1) | Includes $39,656 (net of tax benefit of $23,793) related to deferred losses on terminated cash flow hedges included in Accumulated Other Comprehensive Income (Loss).
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------



See Notes to Unaudited Consolidated Financial Statements



6



---

##### Table of Contents

PART 1



DUKE ENERGY OHIO, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands)



|                                                                                                                     |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|-------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | --------- | - |  |  | -------------------------------- | - | -------- | ----------------------------------- |  | - | -------- | -
|                                                                                                                     |  | Successor                          |           |   |  |  | Predecessor                      |  
|                                                                                                                     |  | Six Months EndedSeptember 30, 2006 |           |   |  |  | Three Months EndedMarch 31, 2006 |   |          | Nine Months EndedSeptember 30, 2005 | 
|CASH FLOWS FROM OPERATING ACTIVITIES                                                                                 |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Net income                                                                                                           |  | $                                  | 52,952    |   |  |  |                                  | $ | 116,363  |                                     |  | $ | 200,974  |  
|Adjustments to reconcile net income to net cash provided by operating activities:                                    |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Depreciation and amortization                                                                                        |  |                                    | 187,066   |   |  |  |                                  |   | 67,918   |                                     |  |   | 200,491  |  
|Losses (gains) on sales of equity investments and other assets                                                       |  |                                    | 14,293    |   |  |  |                                  |   | (26,069  | )                                   |  |   | (103,845 | )
|Deferred income taxes                                                                                                |  |                                    | (94,574   | ) |  |  |                                  |   | 6,793    |                                     |  |   | (32,449  | )
|Regulatory asset/liability amortization                                                                              |  |                                    | 6,078     |   |  |  |                                  |   | 6,903    |                                     |  |   | 6,733    |  
|Accrued pension and postretirement benefit costs                                                                     |  |                                    | 21,184    |   |  |  |                                  |   | 8,234    |                                     |  |   | 21,470   |  
|(Increase) decrease in:                                                                                              |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Net realized and unrealized mark-to-market and hedging transactions                                                  |  |                                    | (18,323   | ) |  |  |                                  |   | (30,367  | )                                   |  |   | 115,518  |  
|Receivables                                                                                                          |  |                                    | 201,861   |   |  |  |                                  |   | 10,093   |                                     |  |   | (363,131 | )
|Inventory                                                                                                            |  |                                    | (1,648    | ) |  |  |                                  |   | 56,177   |                                     |  |   | (35,094  | )
|Other current assets                                                                                                 |  |                                    | 45,411    |   |  |  |                                  |   | 67,659   |                                     |  |   | (208,887 | )
|Increase (decrease) in:                                                                                              |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Accounts payable                                                                                                     |  |                                    | (137,076  | ) |  |  |                                  |   | (156,508 | )                                   |  |   | 494,516  |  
|Taxes accrued                                                                                                        |  |                                    | 107,657   |   |  |  |                                  |   | 49,735   |                                     |  |   | 103,694  |  
|Other current liabilities                                                                                            |  |                                    | (52,317   | ) |  |  |                                  |   | (78,423  | )                                   |  |   | 6,244    |  
|Regulatory asset/liability deferrals                                                                                 |  |                                    | (9,224    | ) |  |  |                                  |   | (799     | )                                   |  |   | (13,472  | )
|Other assets                                                                                                         |  |                                    | 81,476    |   |  |  |                                  |   | 20,110   |                                     |  |   | 34,187   |  
|Other liabilities                                                                                                    |  |                                    | (44,239   | ) |  |  |                                  |   | 3,226    |                                     |  |   | (24,232  | )
|Net cash provided by operating activities                                                                            |  |                                    | 360,577   |   |  |  |                                  |   | 121,045  |                                     |  |   | 402,717  |  
|CASH FLOWS FROM INVESTING ACTIVITIES                                                                                 |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Capital expenditures                                                                                                 |  |                                    | (244,180  | ) |  |  |                                  |   | (134,356 | )                                   |  |   | (309,385 | )
|Purchase of emission allowances                                                                                      |  |                                    | (133,147  | ) |  |  |                                  |   | (161,492 | )                                   |  |   | (296,244 | )
|Sale of emission allowances                                                                                          |  |                                    | 105,027   |   |  |  |                                  |   | 98,801   |                                     |  |   | 329,591  |  
|Net proceeds from the sales of equity investments and other assets, and sales of and collections on notes receivable |  |                                    |          |   |  |  |                                  |   |         |                                     |  |   | 57       |  
|Withdrawal of restricted funds held in trust                                                                         |  |                                    |          |   |  |  |                                  |   | 8,137    |                                     |  |   | 23,153   |  
|Net cash used in investing activities                                                                                |  |                                    | (272,300  | ) |  |  |                                  |   | (188,910 | )                                   |  |   | (252,828 | )
|CASH FLOWS FROM FINANCING ACTIVITIES                                                                                 |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Issuance of long-term debt                                                                                           |  |                                    | 77,153    |   |  |  |                                  |   | 139,806  |                                     |  |   |         |  
|Redemption of long-term debt                                                                                         |  |                                    | (78,266   | ) |  |  |                                  |   | (1,255   | )                                   |  |   |         |  
|Redemption of preferred stock of subsidiaries                                                                        |  |                                    |          |   |  |  |                                  |   | (20,485  | )                                   |  |   |         |  
|Notes payable and commercial paper                                                                                   |  |                                    | (55,566   | ) |  |  |                                  |   | 50,572   |                                     |  |   | 24,403   |  
|Dividends paid                                                                                                       |  |                                    |          |   |  |  |                                  |   | (102,420 | )                                   |  |   | (170,093 | )
|Net cash provided by (used in) financing activities                                                                  |  |                                    | (56,679   | ) |  |  |                                  |   | 66,218   |                                     |  |   | (145,690 | )
|Net increase (decrease) in cash and cash equivalents                                                                 |  |                                    | 31,598    |   |  |  |                                  |   | (1,647   | )                                   |  |   | 4,199    |  
|Cash and cash equivalents at beginning of period                                                                     |  |                                    | 8,027     |   |  |  |                                  |   | 9,674    |                                     |  |   | 4,154    |  
|Cash and cash equivalents at end of period                                                                           |  | $                                  | 39,625    |   |  |  |                                  | $ | 8,027    |                                     |  | $ | 8,353    |  
|                                                                                                                     | 
|Supplemental Disclosures                                                                                             |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Significant non-cash transactions:                                                                                   |  |                                    |           |   |  |  |                                  |   |          |                                     |  |   |          |  
|Purchase accounting adjustments                                                                                      |  | $                                  | 2,744,787 |   |  |  |                                  | $ |         |                                     |  | $ |         |  
|Allowance for funds used during construction (AFUDC)  equity component                                              |  | $                                  | (1,661    | ) |  |  |                                  | $ | (570     | )                                   |  | $ | (804     | )
|Transfer of generating assets from Duke Energy                                                                       |  | $                                  | 1,452,191 |   |  |  |                                  | $ |         |                                     |  | $ |         |  
|Dividends declared but not paid                                                                                      |  | $                                  |          |   |  |  |                                  | $ |         |                                     |  | $ | 80,839   |  



See Notes to Unaudited
Consolidated Financial Statements



7



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements

(Unaudited)



1. Basis of Presentation



Nature of Operations and Basis of Consolidation

Duke Energy Ohio, Inc. (Duke Energy Ohio) (formerly The Cincinnati Gas & Electric Company), an Ohio corporation organized in 1837, is a wholly owned subsidiary of Cinergy Corp. (Cinergy). Duke Energy Ohio is a
combination electric and gas public utility company that provides service in the southwestern portion of Ohio and through Duke Energy Kentucky, Inc. (Duke Energy Kentucky) (formerly Union Light, Heat and Power Company) in nearby areas of Kentucky.
Duke Energy Ohios principal lines of business include generation, transmission and distribution of electricity, the sale of and/or transportation of natural gas, and power marketing and trading business. Duke Energy Ohios principal
subsidiary, Duke Energy Kentucky, a Kentucky corporation organized in 1901, provides electric and gas service in northern Kentucky. In October 2006, Cinergy and Duke Energy Ohio completed the sale of Duke Energy Ohios power marketing and
trading business. See Note 10 for additional information.

On April 3, 2006, in accordance with their previously announced merger agreement, Duke
Energy Corporation (Old Duke Energy) and Cinergy merged into wholly owned subsidiaries of Duke Energy Holding Corp. (Duke Energy HC), resulting in Duke Energy HC becoming the parent entity. In connection with the closing of the merger transactions,
Duke Energy HC changed its name to Duke Energy Corporation (New Duke Energy or Duke Energy) and Old Duke Energy converted into a limited liability company named Duke Power Company LLC (subsequently renamed Duke Energy Carolinas, LLC). As a result of
the merger transactions, each outstanding share of Cinergy common stock was converted into 1.56 shares of Duke Energy common stock which resulted in the issuance of approximately 313 million shares of Duke Energy common stock. See Note 2 for
additional information regarding the merger. Both Old Duke Energy and New Duke Energy are referred to as Duke Energy herein.

These Consolidated
Financial Statements include, after eliminating intercompany transactions and balances, the accounts of Duke Energy Ohio and all majority-owned subsidiaries where Duke Energy Ohio has control, and those variable interest entities where Duke Energy
Ohio is the primary beneficiary.

These Consolidated Financial Statements reflect all normal recurring adjustments that are, in the opinion of
management, necessary to fairly present Duke Energy Ohios financial position and results of operations. Amounts reported in the interim Consolidated Statements of Operations are not necessarily indicative of amounts expected for the respective
annual periods due to the effects of seasonal temperature variations on energy consumption, the timing of maintenance on electric generating units, changes in mark-to-market (MTM) valuations, changing commodity prices, and other factors. These
Consolidated Financial Statements and other information included in this quarterly report should be read in conjunction with the Consolidated Financial Statements and Notes in Duke Energy Ohios Form 10-K for the year ended December 31,
2005 (2005 10-K).



Predecessor and Successor Reporting

In connection with the Duke Energy merger, Duke Energy acquired all of the outstanding common stock of Cinergy. The merger has been accounted for under the purchase
method of accounting with Duke Energy treated as the acquirer for accounting purposes. As a result, the assets and liabilities of Cinergy were recorded at their respective fair values as of the merger consummation date. Purchase accounting impacts,
including goodwill recognition, have been pushed down to Duke Energy Ohio, resulting in the assets and liabilities of Duke Energy Ohio being recorded at their respective fair values as of April 3, 2006. Except for an adjustment
related to pension and other postretirement benefit obligations, as mandated by Statement of Financial Accounting Standards (SFAS) No. 87, Employers Accounting for Pensions and SFAS No. 106,
Employers Accounting for Postretirement Benefits Other Than Pensions, the accompanying consolidated financial statements do not reflect any adjustments related to Duke Energy Ohios regulated operations that are
accounted for pursuant to SFAS No. 71, Accounting for the Effects of Certain Types of Regulation (SFAS No. 71), which are comprised of Duke Energy Ohios regulated transmission and distribution and Duke Energy
Kentucky. Under the rate setting and recovery provisions currently in place for these regulated operations which provide revenues derived from cost, the fair values of the individual tangible and intangible assets and liabilities are considered to
approximate their carrying values.

Duke Energy Ohios Consolidated Statements of Operations subsequent to the merger include amortization
expense relating to purchase accounting adjustments and depreciation of fixed assets based upon their fair value. Therefore, the Duke Energy Ohio financial data prior to the merger will not generally be comparable to its financial data subsequent to
the merger. See Note 2 for additional information.



8



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Due to the impact of the push-down accounting, the financial statement and certain note presentations separate Duke Energy Ohios
presentations into two distinct periods, the period before the consummation of the merger (labeled Predecessor) and the period after that date (labeled Successor), to indicate the application of different bases of accounting
between the periods presented.

The fair values of the assets acquired and liabilities assumed for Duke Energy Ohio are preliminary and are subject to
change as valuation analyses are finalized and remaining information on the fair values is received. The portion of the purchase price pushed down to Duke Energy Ohio is based on preliminary estimates of Duke Energy Ohios fair value relative
to the preliminary fair value of other entities acquired. Adjustments to this preliminary allocation could be material and such adjustments could directly impact the amount recorded in Duke Energy Ohios common stock equity. See Note 2 for
additional information.



Reclassifications and Revisions



Business Segments and Performance Measures

As a result of the merger with Duke Energy, effective in the second quarter of 2006, Duke Energy Ohio adopted new business segments, and the segment performance
measure has been changed to earnings before interest and taxes (EBIT) from continuing operations. As a result, certain prior period amounts have been retroactively adjusted to conform to the new segment presentation and measures. See Note 11 for
further discussion of segments.



Conforming Changes in Accounting and Reporting



Emission Allowance Accounting

Effective with the merger between Duke Energy and Cinergy, Duke Energy Ohio classifies emission allowances as Intangible Assets in the accompanying Consolidated
Balance Sheets and includes cash flows from purchases and sales of emission allowances as investing activities. Historically, Duke Energy Ohio classified emission allowances as Inventory and Other non-current assets in the Consolidated Balance
Sheets, presented revenues from sales of emission allowances as operating revenues and the cost of emission allowances sold as cost of fuel resold in the Consolidated Statements of Operations and presented cash flows from purchases and sales of
emission allowances as operating activities in the accompanying Consolidated Statements of Cash Flows. The classification of Inventory or Other non-current assets was determined by the emission allowances vintage year. Duke Energy Ohio changed its
method of accounting for emission allowances in connection with their application of push-down accounting in order to conform to the accounting policies of Duke Energy. Emission allowances, which do not have an expiration date, are recognized in
earnings as they are consumed or sold. As a result of this change in classification, gains or losses on sales of emission allowances are presented on a net basis in Gain (Loss) on Sales of Other Assets and Other, net in the accompanying Consolidated
Statements of Operations and purchases and sales of emission allowances are presented gross as investing activities on the Consolidated Statements of Cash Flows.



9



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Duke Energy Ohio recorded the change in accounting policy in accordance with SFAS No. 154, Accounting Changes and Error
CorrectionsA Replacement of Accounting Principles Board (APB) Opinion No. 20 and SFAS No. 3. SFAS No. 154 requires that a change in accounting policy be made through retrospective application of the new policy to all
prior periods presented. This change does not impact income from continuing operations, net income, total assets, or cash flows from financing activities as previously presented. A summary of the financial statement items affected by the retroactive
application of this change in accounting principle is as follows:



|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|------------------------------------------------------ |  | ---------------------------------- | --- | - | ---------------------------------- | - | -------------- | - |  | --------------------------------- |  | - | ---------------------------------- | - |  | --------------------------------- | --- | - |  | - | ----- | -
|                                                       |  | Successor(1)                       |     |   |                                    |   | Predecessor(1) |  
|                                                       |  | Three MonthsEndedSeptember 30,2006 |     |   | Six Months Ended September 30,2006 |   |                |   |  | Three Months Ended March 31, 2006 |  |   | Three MonthsEndedSeptember 30,2005 |   |  | Nine MonthsEndedSeptember 30,2005 |    
|                                                       |  | (in millions)                      |    
|Total Operating Revenues                               |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|Before reclassification of emission allowances         |  | $                                  | 820 |   |                                    | $ | 1,558          |   |  |                                   |  | $ | 1,007                              |   |  | $                                 | 635 |   |  | $ | 2,026 |  
|Effect of emission allowance reclassification          |  |                                    | (44 | ) |                                    |   | (86            | ) |  |                                   |  |   | (44                                | ) |  |                                   | (45 | ) |  |   | (136  | )
|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|After reclassification of emission allowances          |  | $                                  | 776 |   |                                    | $ | 1,472          |   |  |                                   |  | $ | 963                                |   |  | $                                 | 590 |   |  | $ | 1,890 |  
|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|Total Operating Expenses                               |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|Before reclassification of emission allowances         |  | $                                  | 731 |   |                                    | $ | 1,427          |   |  |                                   |  | $ | 799                                |   |  | $                                 | 545 |   |  | $ | 1,727 |  
|Effect of emission allowance reclassification          |  |                                    | (53 | ) |                                    |   | (100           | ) |  |                                   |  |   | (18                                | ) |  |                                   | (12 | ) |  |   | (32   | )
|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|After reclassification of emission allowances          |  | $                                  | 678 |   |                                    | $ | 1,327          |   |  |                                   |  | $ | 781                                |   |  | $                                 | 533 |   |  | $ | 1,695 |  
|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|(Losses) Gains on Sales of Other Assets and Other, net |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|Before reclassification of emission allowances         |  | $                                  |    |   |                                    | $ |               |   |  |                                   |  | $ |                                   |   |  | $                                 |    |   |  | $ |      |  
|Effect of emission allowance reclassification          |  |                                    | (9  | ) |                                    |   | (14            | ) |  |                                   |  |   | 26                                 |   |  |                                   | 33  |   |  |   | 104   |  
|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  
|After reclassification of emission allowances          |  | $                                  | (9  | ) |                                    | $ | (14            | ) |  |                                   |  | $ | 26                                 |   |  | $                                 | 33  |   |  | $ | 104   |  
|                                                       |  |                                    |     |   |                                    |   |                |   |  |                                   |  |   |                                    |   |  |                                   |     |   |  |   |       |  



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



|                                               |  |                   |      |   |  |  |                  |   |     |  
|---------------------------------------------- |  | ----------------- | ---- | - |  |  | ---------------- | - | --- | -
|                                               |  | Successor(1)      |      |   |  |  | Predecessor(1)   |  
|                                               |  | September 30,2006 |      |   |  |  | December 31,2005 |  
|                                               |  | (in millions)     |     
|Inventory                                      |  |                   |      |   |  |  |                  |   |     |  
|Before reclassification of emission allowances |  | $                 | 227  |   |  |  |                  | $ | 226 |  
|Effect of emission allowance reclassification  |  |                   | (92  | ) |  |  |                  |   | (48 | )
|                                               |  |                   |      |   |  |  |                  |   |     |  
|After reclassification of emission allowances  |  | $                 | 135  |   |  |  |                  | $ | 178 |  
|                                               |  |                   |     
|Other Assets                                   |  |                   |      |   |  |  |                  |   |     |  
|Before reclassification of emission allowances |  | $                 | 474  |   |  |  |                  | $ | 46  |  
|Effect of emission allowance reclassification  |  |                   | (448 | ) |  |  |                  |   | (19 | )
|                                               |  |                   |      |   |  |  |                  |   |     |  
|After reclassification of emission allowances  |  | $                 | 26   |   |  |  |                  | $ | 27  |  
|                                               |  |                   |     
|Intangible Assets                              |  |                   |      |   |  |  |                  |   |     |  
|Before reclassification of emission allowances |  | $                 | 251  |   |  |  |                  | $ | 38  |  
|Effect of emission allowance reclassification  |  |                   | 540  |   |  |  |                  |   | 67  |  
|                                               |  |                   |      |   |  |  |                  |   |     |  
|After reclassification of emission allowances  |  | $                 | 791  |   |  |  |                  | $ | 105 |  



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



10



---

##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



|                                               |  |                                  |      |   |  |  |                                |   |      |                                   |  |   |      |  
|---------------------------------------------- |  | -------------------------------- | ---- | - |  |  | ------------------------------ | - | ---- | --------------------------------- |  | - | ---- | -
|                                               |  | Successor(1)                     |      |   |  |  | Predecessor(1)                 |  
|                                               |  | Six MonthsEndedSeptember 30,2006 |      |   |  |  | Three MonthsEndedMarch 31,2006 |   |      | Nine MonthsEndedSeptember 30,2005 | 
|                                               |  | (in millions)                    |     
|Cash Flows from Operating Activities           |  |                                  |      |   |  |  |                                |   |      |                                   |  |   |      |  
|Before reclassification of emission allowances |  | $                                | 333  |   |  |  |                                | $ | 58   |                                   |  | $ | 436  |  
|Effect of emission allowance reclassification  |  |                                  | 28   |   |  |  |                                |   | 63   |                                   |  |   | (33  | )
|                                               |  |                                  |      |   |  |  |                                |   |      |                                   |  |   |      |  
|After reclassification of emission allowances  |  | $                                | 361  |   |  |  |                                | $ | 121  |                                   |  | $ | 403  |  
|                                               |  |                                  |      |  
|Cash Flows from Investing Activities           |  |                                  |      |   |  |  |                                |   |      |                                   |  |   |      |  
|Before reclassification of emission allowances |  | $                                | (244 | ) |  |  |                                | $ | (126 | )                                 |  | $ | (286 | )
|Effect of emission allowance reclassification  |  |                                  | (28  | ) |  |  |                                |   | (63  | )                                 |  |   | 33   |  
|                                               |  |                                  |      |   |  |  |                                |   |      |                                   |  |   |      |  
|After reclassification of emission allowances  |  | $                                | (272 | ) |  |  |                                | $ | (189 | )                                 |  | $ | (253 | )



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



Assets Held for Sale

When a determination is made that a
long-lived asset or asset group should be classified as an asset held for sale pursuant to SFAS No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets, the long-lived asset or asset group is
presented on the Consolidated Balance Sheet with the current and non-current portions separately presented based upon their previous classification (prior to meeting the held for sale criteria). Prior period balance sheets are not
retrospectively adjusted for current period assets held for sale to conform to the current year presentation. Historically, Duke Energy Ohio classified all held for sale amounts as non-current and adjusted their Consolidated Balance
Sheets retrospectively to conform to the current presentation. This change in presentation has been adopted in order for the Duke Energy Ohio financial statements to conform to the Duke Energy presentation as a result of push-down accounting. See
Note 10 for additional information.



Reclassifications

The financial statements have been reclassified to conform with Duke Energys format. Certain other prior period amounts have been reclassified to conform
to current year presentation. Such reclassifications include the reclassification of income from continuing operations from Duke Energy Ohios commercial marketing and trading business to discontinued operations. See Note 10 for additional
information.



Use of Estimates

To conform with generally accepted accounting principles (GAAP) in the United States, management makes estimates and assumptions that affect the amounts reported in
the Consolidated Financial Statements and Notes to Consolidated Financial Statements. Although these estimates are based on managements best available knowledge at the time, actual results could differ from those estimates.



Accounting for Excise Taxes

Certain excise taxes levied by state or local governments are collected by Duke Energy Ohio from its customers. These taxes, which are required to be paid
regardless of Duke Energy Ohios ability to collect from the customer, are accounted for on a gross basis. When Duke Energy Ohio acts as an agent, and the tax is not required to be remitted if it is not collected from the customer, the taxes
are accounted for on a net basis.

Duke Energy Ohios excise taxes accounted for on a gross basis and recorded as revenues in the accompanying
Consolidated Statements of Operations for the three months ended September 30, 2006, March 31, 2006, and September 30, 2005, six months ended September 30, 2006 and the nine months ended September 30, 2005 were as
follows:



|                                      |  |                                    |    |                |  |                                  |   |                                      |  |                                     |    |  |   |   
|------------------------------------- |  | ---------------------------------- | -- | -------------- |  | -------------------------------- | - | ------------------------------------ |  | ----------------------------------- | -- |  | - | --
|Successor(1)                          |  |                                    |    | Predecessor(1)
|Three Months Ended September 30, 2006 |  | Six Months EndedSeptember 30, 2006 |    |                |  | Three Months EndedMarch 31, 2006 |   | Three Months EndedSeptember 30, 2005 |  | Nine Months EndedSeptember 30, 2005
|                                      |  | (in millions)                      |    |                |  |                                 
|$28                                   |  | $                                  | 55 |                |  |                                  | $ | 38                                   |  | $                                   | 26 |  | $ | 89



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Regulation

Duke Energy Ohios
utility operating companies use the same accounting policies and practices for financial reporting purposes as non-regulated companies under GAAP. However, sometimes actions by its regulators, the Federal Energy Regulatory Commission (FERC) and the
state utility commissions, result in accounting treatment different from that used by non-regulated companies. When this occurs, Duke Energy Ohio applies the provisions of SFAS No. 71, Accounting for the Effect of Certain Types of
Regulation(SFAS No. 71). In accordance with SFAS No. 71, Duke Energy Ohio records regulatory assets and liabilities (expenses deferred for future recovery from customers or amounts provided in current rates to cover costs
to be incurred in the future, respectively) on its Consolidated Balance Sheets.

Pursuant to the consummation of the merger between Duke Energy and
Cinergy and the application of purchase accounting, a revaluation of the defined benefit plans was completed and resulted in the recognition of a regulatory asset of approximately $152 million for Duke Energy Ohio. During the third quarter of 2006
the regulatory asset was adjusted by $10 million to $142 million due to the receipt of additional information regarding the revaluation of the defined benefit plans. For additional information on purchase accounting, see Notes 1 and 2.

Duke Energy Ohio has a Regulatory Transition Charge (RTC) of approximately $350.6 million and $413.7 million as of September 30, 2006 and December 31, 2005,
respectively, which is classified in Other Regulatory Assets and Deferred Debits on the Consolidated Balance Sheets. The RTC resulted from comprehensive deregulation legislation passed in the state of Ohio in 1999 and has been approved by the Public
Utilities Commission of Ohio (PUCO) to be recovered over a ten-year period beginning January 1, 2001.



2. Duke Energy/Cinergy Merger

On April 3, 2006, the previously announced merger between Duke Energy and Cinergy was
consummated (see Note 1 for additional information on the merger, purchase accounting and Predecessor and Successor reporting). For accounting purposes, the effective date of the merger was April 1, 2006. The merger combines the Duke Energy and
Cinergy regulated franchises as well as deregulated generation in the Midwestern United States (Midwest). The merger is anticipated to provide more regulatory, geographic, and weather diversity to Duke Energys earnings. In connection with the
merger, Duke Energy issued 1.56 shares of Duke Energy common stock for each outstanding share of Cinergy common stock, which resulted in the issuance of approximately 313 million shares of Duke Energy common stock. Based on the market price of Duke
Energy common stock during the period, including the two trading days before, through the two trading days after, May 9, 2005, the date Duke Energy and Cinergy announced the merger, the transaction is valued at approximately $9.1 billion and
has resulted in preliminary goodwill recorded at Duke Energy Ohio of approximately $2.2 billion.

The amount of goodwill results from significant
strategic and financial benefits expected to be realized by Duke Energy Ohio including:

| |  |  | increased financial strength and flexibility;
| | - |  | ---------------------------------------------

| |  |  | stronger utility business platform;
| | - |  | -----------------------------------

| |  |  | greater scale and fuel diversity, as well as improved operational efficiencies for the merchant generation business;
| | - |  | --------------------------------------------------------------------------------------------------------------------

| |  |  | broadened electric distribution platform;
| | - |  | -----------------------------------------

| |  |  | improved reliability and customer service through the sharing of best practices;
| | - |  | --------------------------------------------------------------------------------

| |  |  | increased scale and scope of the electric and gas businesses with stand-alone strength;
| | - |  | ---------------------------------------------------------------------------------------

| |  |  | complementary positions in the Midwest;
| | - |  | ---------------------------------------

| |  |  | greater customer diversity;
| | - |  | ---------------------------

| |  |  | combined expertise; and
| | - |  | -----------------------

| |  |  | significant cost savings synergies.
| | - |  | -----------------------------------

As discussed in Note 1 above, purchase
accounting impacts, including goodwill recognition, have been pushed down to Duke Energy Ohio, resulting in the assets and liabilities of Duke Energy Ohio being recorded at their respective fair values as of April 3, 2006.



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Purchase price allocation and goodwill

The following table summarizes the differences between the estimated fair values and the carrying values of the Duke Energy Ohio assets and liabilities at the date of acquisition (certain fair values are preliminary and are
subject to change including the amount of goodwill in total and the amount allocated to Duke Energy Ohio as valuation analyses are finalized and remaining information on the fair values is received).



|                                                          |  |                       |      |   |  |   |        |    
|--------------------------------------------------------- |  | --------------------- | ---- | - |  | - | ------ | ---
|                                                          |  | (amounts in millions) |     
|Purchase price                                            |  |                       |      |   |  |   |        |    
|Total purchase price                                      |  |                       |      |   |  | $ | 4,736  | (1)
|Less Duke Energy Ohio net book value at acquisition       |  |                       |      |   |  |   | (1,991 | )  
|                                                          |  |                       |      |   |  |   |        |    
|Excess purchase price                                     |  |                       |      |   |  | $ | 2,745  |    
|Preliminary Fair value adjustments to assets acquired     |  |                       |      |   |  |   |        |    
|Current assets                                            |  | $                     | (6   | ) |  |   |        |    
|Property, plant, and equipment(2)                         |  |                       | (284 | ) |  |   |        |    
|Intangibles                                               |  |                       | (736 | ) |  |   |        |    
|Regulatory assets and deferred debits                     |  |                       | (140 | ) |  |   |        |    
|Preliminary Fair value adjustments to liabilities assumed |  |                       |      |   |  |   |        |    
|Current liabilities                                       |  |                       | 8    |   |  |   |        |    
|Accrued pension and post-retirement benefit costs         |  |                       | 131  |   |  |   |        |    
|Deferred taxes                                            |  |                       | 337  |   |  |   |        |    
|Other non-current liabilities                             |  |                       | 122  |   |  |   |        |    
|                                                          |  |                       |      |   |  |   |        |    
|                                                          |  |                       |      |   |  |   | (568   | )  
|                                                          |  |                       |      |   |  |   |        |    
|Goodwill                                                  |  |                       |      |   |  | $ | 2,177  |    



|(1) | Allocation of purchase price to Duke Energy Ohio was based on relative fair value of entities acquired (including Duke Energy Ohio) compared to a total purchase price of $9,111 million for
Cinergy Corp. See Note 1 for additional information.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Amounts recorded for regulated property, plant, and equipment by Duke Energy Ohio on the acquisition date include approximately $1,510 million, related to accumulated depreciation of acquired
assets.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Goodwill recorded by Duke Energy Ohio as of September 30, 2006 resulting from Duke Energys merger with Cinergy is
$2,177 million. The approximate $4 million increase in goodwill resulting from the merger at September 30, 2006 compared to the June 30, 2006 initial allocation is a result of changes in valuations due to additional information received
after the June 30, 2006 preliminary valuation. The valuation and other assessment procedures required to allocate this goodwill to the appropriate reporting units and reportable segments are currently in process and are anticipated to be
completed during 2006. See Note 9 for additional information.

The following unaudited consolidated pro forma financial results for Duke Energy Ohio
are presented as if the merger with Duke Energy had occurred at the beginning of each of the periods presented:



Unaudited Consolidated Pro Forma Results (Predecessor)



|                                           |  |                                |     |                                    |   |                                   |  |   |      
|------------------------------------------ |  | ------------------------------ | --- | ---------------------------------- | - | --------------------------------- |  | - | -----
|                                           |  | Three MonthsEndedMarch 31,2006 |     | Three MonthsEndedSeptember 30,2005 |   | Nine MonthsEndedSeptember 30,2005
|                                           |  | (in millions)                 
|Operating revenues                         |  | $                              | 971 |                                    | $ | 595                               |  | $ | 1,904
|Income from continuing operations          |  |                                | 95  |                                    |   | 22                                |  |   | 78   
|Net income                                 |  |                                | 93  |                                    |   | 37                                |  |   | 120  
|Earnings available for common stockholders |  |                                | 93  |                                    |   | 37                                |  |   | 120  

Pro forma results for the three months and six months ended September 30, 2006 are not presented since
the merger occurred at the beginning of the periods presented. Additionally, pro forma results do not include any significant transactions completed by Duke Energy Ohio other than the impact of Cinergys merger with Duke Energy. The pre-tax
impacts of purchase accounting on the results of operations of Duke Energy Ohio are expected to be charges of approximately $110 million to $120 million during 2006.

Prior to consummation of the merger, certain regulatory approvals were received from the state utility commissions and the FERC. See Note 13 for a discussion of the regulatory impacts of the merger.



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



3. Common Stock

Cinergy owns all of the
common stock of Duke Energy Ohio. In April 2006, Duke Energy acquired 100 percent of Cinergys outstanding stock for 1.56 shares of Duke Energy common stock per outstanding share of Cinergy common stock. This conversion resulted in the issuance
of approximately 313 million shares of Duke Energy common stock. See Note 2 for additional information.

In April 2006, Duke Energy Ohio filed a
petition with the FERC for a declaratory ruling that its payment of dividends out of its paid-in capital account, using the balance transferred from the retained earnings account, resulting from purchase accounting arising from the Duke
Energy/Cinergy merger, would not violate section 305(a) of the Federal Power Act, which generally precludes the payment of dividends out of paid-in capital. Such a ruling was necessary because purchase/push-down
accounting reset retained earnings to zero as of April 3, 2006, thus precluding Duke Energy Ohio from using pre-merger retained earnings to pay dividends. Without this approval, Duke Energy Ohios ability to pay dividends
would have been constrained to earnings since April 3, 2006. In May 2006, the FERC issued an order approving Duke Energy Ohios petition.



4. Preferred Stock

In March 2006, Duke Energy Ohio redeemed all
outstanding shares of its $16.98 million notional amount 4% Cumulative Preferred Stock and its $3.5 million notional amount 4.75% Cumulative Preferred Stock at a price of $108 per share and $101 per share, respectively, plus accrued and unpaid
dividends.



5. Inventory

Inventory is recorded at the lower of cost or market value, primarily using the average cost method.



|                                    |  |                   |     |  |  |                  |   |    
|----------------------------------- |  | ----------------- | --- |  |  | ---------------- | - | ---
|                                    |  | Successor(1)      |     |  |  | Predecessor(1)  
|                                    |  | September 30,2006 |     |  |  | December 31,2005
|                                    |  | (in millions)    
|Inventory                           |  |                   |     |  |  |                  |   |    
|Fuel for use in electric production |  | $                 | 74  |  |  |                  | $ | 58 
|Other materials and supplies        |  |                   | 56  |  |  |                  |   | 49 
|Gas stored for current use          |  |                   | 5   |  |  |                  |   | 71 
|                                    |  |                   |     |  |  |                  |   |    
|Total Inventory                     |  | $                 | 135 |  |  |                  | $ | 178



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



6. Debt and Credit Facilities

Duke Energy Ohio receives support for its
short-term borrowing needs from its parent entity, Cinergy, whose short-term borrowings consist primarily of unsecured revolving lines of credit and sale of commercial paper. During June 2006, Cinergy and its subsidiaries, including Duke Energy
Ohio, amended their multi-year syndicated $2 billion revolving credit facility to extend the expiration date from September 2010 to June 2011, to reduce costs, and to conform the terms to those found in the legacy Duke Energy facilities. This credit
facility contains an option allowing borrowing up to the full amount of the facility on the day of initial expiration for up to one year and contains a covenant requiring the debt-to-total capitalization ratio to not exceed 65%. The credit facility
also contains a $500 million borrowing sub limit for Duke Energy Ohio and a $100 million borrowing sub limit for Duke Energy Kentucky.

Cinergys
credit agreement contains various financial and other covenants; however, Cinergys credit agreement does not include material adverse change clauses or any covenants based on credit ratings. Failure to meet those covenants beyond applicable
grace periods could result in accelerated due dates and/or termination of the agreement. As of September 30, 2006, Cinergy was in compliance with those covenants. In addition, the credit agreement allows for acceleration of payments or
termination of the agreement due to nonpayment or to the acceleration of other significant indebtedness of the borrower or some of its subsidiaries.

In addition, Duke Energy Ohio maintains uncommitted lines of credit. These facilities are not firm sources of capital but rather informal agreements to borrow money, subject to availability, with pricing determined at the time of advance.

Duke Energy Ohio participates with Cinergy and other Cinergy subsidiaries in a money pool arrangement to better manage cash and working capital
requirements. As of September 30, 2006 and December 31, 2005, approximately $183 million and $114 million,



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



respectively, was outstanding under this arrangement and is a component of Notes Payable and Commercial Paper on the Consolidated Balance Sheets.

As of September 30, 2006, approximately $96 million of pollution control bonds which are short-term obligations by nature, were classified as long-term debt on
the Consolidated Balance Sheets due to Duke Energy Ohios intent and ability to utilize such borrowings as long-term financing. Duke Energy Ohios sub limit of Cinergys credit facility with non-cancelable terms in excess of one year
as of the balance sheet date give it the ability to refinance these short-term obligations on a long-term basis. As of December 31, 2005, $112 million of pollution control bonds were classified as a component of Notes Payable and Commercial
Paper on the Consolidated Balance Sheets.

In August 2006, Duke Energy Kentucky issued approximately $77 million principal amount of floating rate
tax-exempt notes due August 1, 2027. Proceeds from the issuance were used to refund a like amount of debt on September 1, 2006 outstanding at Duke Energy Ohio. The Duke Energy Ohio debt was assumed by Duke Energy Kentucky as part of the
recent transfer of generating assets from Duke Energy Ohio to Duke Energy Kentucky. Approximately $27 million of the floating rate debt was swapped to a fixed rate concurrent with closing.



7. Employee Benefit Obligations

Duke Energy Ohio participates in pension and other postretirement benefit plans sponsored by Cinergy. Cinergys qualified defined benefit pension plans cover
substantially all United States employees meeting certain minimum age and service requirements. Funding for the qualified defined benefit pension plans is based on actuarially determined contributions, the maximum of which is generally the amount
deductible for tax purposes and the minimum being that required by the Employee Retirement Income Security Act of 1974, as amended. The pension plans assets consist of investments in equity and debt securities. In addition, Cinergy sponsors
non-qualified pension plans (plans that do not meet the criteria for certain tax benefits) that cover officers, certain other key employees, and non-employee directors. Cinergy also provides certain health care and life insurance benefits to retired
United States employees and their eligible dependents. These benefits are subject to minimum age and service requirements. The health care benefits include medical coverage, dental coverage, and prescription drug coverage and are subject to certain
limitations, such as deductibles and co-payments.

There were no qualified pension benefit contributions for either the three months ended
March 31, 2006 or June 30, 2006. Duke Energy contributed approximately $124 million to the legacy Cinergy qualified pension plans in third quarter 2006. No additional contributions are planned for 2006.

Duke Energy Ohios net periodic benefit costs as allocated by Cinergy were as follows:



|                           |  |                                    |     |                                  |   |                |  |                                |  |                                    |     |                                   |   |     |  |   |     
|-------------------------- |  | ---------------------------------- | --- | -------------------------------- | - | -------------- |  | ------------------------------ |  | ---------------------------------- | --- | --------------------------------- | - | --- |  | - | ----
|                           |  | Successor(1)                       |     |                                  |   | Predecessor(1)
|                           |  | Three MonthsEndedSeptember 30,2006 |     | Six MonthsEndedSeptember 30,2006 |   |                |  | Three MonthsEndedMarch 31,2006 |  | Three MonthsEndedSeptember 30,2005 |     | Nine MonthsEndedSeptember 30,2005
|                           |  | (in millions)                     
|Qualified Pension Benefits |  | $                                  | 7.2 |                                  | $ | 14.6           |  |                                |  | $                                  | 5.5 |                                   | $ | 4.4 |  | $ | 13.1
|Non-Qualified Pension      |  | $                                  | 0.2 |                                  | $ | 0.4            |  |                                |  | $                                  | 0.2 |                                   | $ | 0.1 |  | $ | .5  
|Other Postretirement       |  | $                                  | 3.0 |                                  | $ | 6.0            |  |                                |  | $                                  | 2.5 |                                   | $ | 2.6 |  | $ | 7.8 



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

Upon consummation of the merger with Duke Energy, all defined benefit plan obligations were remeasured. Cinergy updated the assumptions used to determine their accrued benefit obligations and prospective net periodic benefit cost to be
allocated to Duke Energy Ohio.



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



8. Acquisitions and Dispositions



Transfer of Certain Duke Energy Generating Assets to Duke Energy Ohio

In April 2006, Duke Energy contributed to Duke Energy Ohio its ownership interest in five plants, representing a mix of combined cycle and peaking plants, with a combined capacity of 3,600 megawatts (MWs), as follows:



|                 |  |                              |  |                   |  |           |  |                  
|---------------- |  | ---------------------------- |  | ----------------- |  | --------- |  | -----------------
|Generating Plant |  | Location                     |  | OwnershipInterest |  | Fuel Type |  | Owned MW Capacity
|Fayette          |  | Fayette County, Pennsylvania |  | 100%              |  | Gas       |  | 620              
|Hanging Rock     |  | Lawrence County, Ohio        |  | 100               |  | Gas       |  | 1,240            
|Lee              |  | Lee County, Illinois         |  | 100               |  | Gas       |  | 640              
|Vermillion       |  | Vermillion County, Indiana   |  | 75                |  | Gas       |  | 480              
|Washington       |  | Washington County, Ohio      |  | 100               |  | Gas       |  | 620              
|                 |  |                              |  |                   |  |           |  |                  
|                 |  |                              |  |                   |  |           |  | 3,600            

The transaction was effective in April 2006 and was accounted for at Duke Energys net book value for
these assets. The entities holding these generating plants, which were indirect subsidiaries of Duke Energy, were first distributed to Duke Energy, which then contributed them to Cinergy which, in turn, contributed them to Duke Energy Ohio. In the
final step, the entities were then merged into Duke Energy Ohio.

In connection with the contribution of these assets, Duke Energy Ohio assumed
certain related liabilities. In particular, Duke Energy Ohio assumed from Duke Energy all payment, performance, and other obligations of Duke Energy, with respect to certain deferred tax liabilities related to the assets. The following table
summarizes this transaction for Duke Energy Ohio:



|                                     |  |               |      
|------------------------------------ |  | ------------- | -----
|                                     |  | (in millions)
|Assets Received                      |  |               |      
|Generating Assets                    |  | $             | 1,563
|Other Assets                         |  |               | 74   
|                                     |  |               |      
|Total Assets Received                |  | $             | 1,637
|                                     |  |               |      
|Liabilities Assumed                  |  |               |      
|Deferred Tax Liabilities             |  | $             | 181  
|Other                                |  |               | 4    
|                                     |  |               |      
|Total Liabilities Assumed            |  | $             | 185  
|                                     |  |               |      
|Contributed Capital from Duke Energy |  | $             | 1,452
|                                     |  |               |      

The following unaudited consolidated pro forma financial results for Duke Energy Ohio are presented as if the
transaction had occurred at the beginning of each of the periods presented:



Unaudited
Consolidated Pro Forma Results (Predecessor)



|                                           |  |                                |     |                                    |   |                                   |  |   |      
|------------------------------------------ |  | ------------------------------ | --- | ---------------------------------- | - | --------------------------------- |  | - | -----
|                                           |  | Three MonthsEndedMarch 31,2006 |     | Three MonthsEndedSeptember 30,2005 |   | Nine MonthsEndedSeptember 30,2005
|                                           |  | (in millions)                 
|Operating revenues                         |  | $                              | 971 |                                    | $ | 632                               |  | $ | 2,018
|Income from continuing operations          |  |                                | 107 |                                    |   | 40                                |  |   | 136  
|Net income                                 |  |                                | 105 |                                    |   | 55                                |  |   | 178  
|Earnings available for common stockholders |  |                                | 105 |                                    |   | 55                                |  |   | 177  

These pro forma results do not include any significant transactions completed by Duke Energy Ohio other than
the impact of the transfer of the ownership interest in the five plants. As part of this transaction, Duke Capital LLC (Duke Capital), a subsidiary of Duke Energy, agreed to reimburse Duke Energy Ohio through April 2016 in the event of certain cash
shortfalls that may result from Duke Energy Ohios ownership of the five stations. During the third quarter of 2006, Duke Capital reimbursed Duke Energy Ohio $1.9 million for



16



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



cash shortfalls that occurred during the second quarter. However, as a result of the calculation pertaining to the 3rd quarter 2006 performance of the five stations,
the $1.9 million received by Duke Energy Ohio from Duke Capital will be returned to Duke Capital during the fourth quarter of 2006. Duke Energy Ohio reflects any payments received or the return of amounts previously received in Common
Stockholders Equity.



9. Goodwill and Intangibles



Goodwill

Duke Energy Ohio evaluates the impairment of goodwill under the guidance of SFAS No. 142, Goodwill and Other Intangible Assets (SFAS No. 142). As discussed further in Note 2, in April 2006, Duke
Energy and Cinergy consummated the merger, which resulted in Duke Energy Ohio recording preliminary goodwill of approximately $2.2 billion. The following table shows the changes in goodwill for the three months ended March 31, 2006 and six months
ended September 30, 2006:



Carrying Amount of Goodwill



|                         |  |         |  |                             |  |  |  |                            |  |         |  |                          
|------------------------ |  | ------- |  | --------------------------- |  |  |  | -------------------------- |  | ------- |  | -------------------------
|Successor(1)             |  |         |  | Predecessor(1)             
|Balance at April 1, 2006 |  | Changes |  | Balance atSeptember 30,2006 |  |  |  | Balance atDecember 31,2005 |  | Changes |  | Balance at March 31, 2006
|(in millions)           
|$2,173                   |  | $4(2)   |  | $2,177                      |  |  |  | $                         |  | $      |  | $                       



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

|(2) | The approximate $4 million increase in goodwill from the merger is a result of changes in valuations due to additional information received after the June 30, 2006 preliminary valuation. See
Note 2 for additional information.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Intangible Assets

Effective with the merger between Duke Energy and Cinergy, Duke Energy Ohios emission allowances are classified as and accounted for as
Intangible assets under SFAS No. 142. The predecessor amounts also have been reclassified to show this presentation. Emission allowances were previously included in Inventory and Other non-current assets. See Note 1 for more information on this
change in accounting principle.

The carrying amount and accumulated amortization of intangible assets are as follows:



|                                                        |  |                   |     |   |  |  |                  |   |     |                                          |  |        
|------------------------------------------------------- |  | ----------------- | --- | - |  |  | ---------------- | - | --- | ---------------------------------------- |  | -------
|                                                        |  | Successor(1)      |     |   |  |  | Predecessor(1)   |   |     | WeightedAverage LifeSeptember30, 2006(2)
|                                                        |  | September 30,2006 |     |   |  |  | December 31,2005 |   |    
|                                                        |  | (in millions)     |     |   | 
|Emission allowances                                     |  | $                 | 540 |   |  |  |                  | $ | 67  |                                          |  |        
|Gas, coal, and power contracts                          |  |                   | 275 |   |  |  |                  |   | 29  |                                          |  | 19 yrs.
|Other                                                   |  |                   | 7   |   |  |  |                  |   | 18  |                                          |  | 7 yrs. 
|                                                        |  |                   |     |   |  |  |                  |   |     |                                          |  |        
|Total intangible assets                                 |  | $                 | 822 |   |  |  |                  | $ | 114 |                                          |  |        
|                                                        |  |                   |     |   |  |  |                  |   |     |                                          |  |        
|Accumulated amortizationgas, coal, and power contracts |  |                   | (28 | ) |  |  |                  |   | (7  | )                                        |  |        
|Accumulated amortizationother                          |  |                   | (3  | ) |  |  |                  |   | (2  | )                                        |  |        
|                                                        |  |                   |     |   |  |  |                  |   |     |                                          |  |        
|Total accumulated amortization                          |  | $                 | (31 | ) |  |  |                  | $ | (9  | )                                        |  |        
|                                                        |  |                   |     |   |  |  |                  |   |     |                                          |  |        
|Total intangible assets, net                            |  | $                 | 791 |   |  |  |                  | $ | 105 |                                          |  |        

|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

|(2) | Emission allowances do not have a contractual term or expiration date.
|--- | ----------------------------------------------------------------------



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)

The carrying value of emission allowances sold or consumed for Duke Energy Ohio were as follows:



|                                      |  |                                     |     |                |  |                                   |   |                                       |  |                                      |    |  |   |    
|------------------------------------- |  | ----------------------------------- | --- | -------------- |  | --------------------------------- | - | ------------------------------------- |  | ------------------------------------ | -- |  | - | ---
|Successor(1)                          |  |                                     |     | Predecessor(1)
|Three Months Ended September 30, 2006 |  | Six Months Ended September 30, 2006 |     |                |  | Three Months Ended March 31, 2006 |   | Three Months Ended September 30, 2005 |  | Nine Months Ended September 30, 2005
|(in millions)                        
|$100                                  |  | $                                   | 188 |                |  |                                   | $ | 36                                    |  | $                                    | 87 |  | $ | 182

|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

Amortization expense for Duke Energy Ohio for the remaining intangible assets is presented for the periods below:



|                                     |  |                                    |    |                |  |                                  |   |                                      |  |                                     |   |  |   |  
|------------------------------------ |  | ---------------------------------- | -- | -------------- |  | -------------------------------- | - | ------------------------------------ |  | ----------------------------------- | - |  | - | -
|Successor(1)                         |  |                                    |    | Predecessor(1)
|Three Months Ended September 30,2006 |  | Six Months Ended September 30,2006 |    |                |  | Three Months Ended March 31,2006 |   | Three Months Ended September 30,2005 |  | Nine Months Ended September 30,2005
|(in millions)                       
|$14                                  |  | $                                  | 28 |                |  |                                  | $ | 1                                    |  | $                                   | 1 |  | $ | 2

|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

The table below shows the expected amortization expense for the next five years for intangible assets (including emission allowances) as of September 30, 2006. The expected amortization expense includes estimates of emission allowances
consumption and estimates of consumption of commodities such as gas and coal under existing contracts.



|     |  |      |  |      |  |      |  |     
|---- |  | ---- |  | ---- |  | ---- |  | ----
|2007 |  | 2008 |  | 2009 |  | 2010 |  | 2011
|$155 |  | $103 |  | $73  |  | $232 |  | $10 

The amortization amounts discussed above are estimates. Actual amounts may differ from these estimates due to
such factors as changes in consumption patterns, sales or impairments of emission allowances, additional intangible asset acquisitions and other events.



Intangible Liabilities

Duke Energy Ohio has intangible liabilities
of $134 million as of September 30, 2006 associated with its Market-Based Standard Service Offer (MBSSO) and other power sale contracts, which are $89 million and $45 million, respectively, that will be recognized in earnings over their
contractual lives. Intangible liabilities are classified as Other non-current liabilities on the Consolidated Balance Sheets. The amounts expected to be recognized in earnings over the next five years are as follows:



|     |  |      |  |      |  |      |  |     
|---- |  | ---- |  | ---- |  | ---- |  | ----
|2007 |  | 2008 |  | 2009 |  | 2010 |  | 2011
|$44  |  | $73  |  | $6   |  | $6   |  | $4  



10. Discontinued Operations

In June 2006, Duke Energy announced it had reached an agreement to sell certain Duke Energy Ohio trading contracts to Fortis, a Benelux-based financial services
group. In October 2006, the sale was completed. Cash proceeds attributable to the Duke Energy Ohio trading contracts were approximately $32 million on a pre-tax basis. Duke Energy Ohio does not expect to record a material pre-tax gain or loss
associated with this transaction. Results of operations for these trading contracts, including prior periods, have been reflected in Income (Loss) from Discontinued Operations, net of tax, including prior periods for Duke Energy Ohio. As of
September 30, 2006, assets and liabilities to be disposed of under the exit plan were classified as Assets held for sale in the Consolidated Balance Sheets.



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DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



The following tables reflect the assets and liabilities, the results of operations, and the income (loss) on disposal related to
investments accounted for as discontinued operations for the three months and six months ended September 30, 2006, three months ended March 31, 2006, and September 30, 2005, and the nine months ended September 30, 2005:



|                                                             |  |                                    |      |                                  |   |      |                |  |                                 |  |   |                                     |   |                                    |   |      |  |   |     
|------------------------------------------------------------ |  | ---------------------------------- | ---- | -------------------------------- | - | ---- | -------------- |  | ------------------------------- |  | - | ----------------------------------- | - | ---------------------------------- | - | ---- |  | - | ----
|                                                             |  | Successor(1)                       |      |                                  |   |      | Predecessor(1)
|                                                             |  | Three MonthsEndedSeptember 30,2006 |      | Six MonthsEndedSeptember 30,2006 |   |      |                |  | Three MonthsEnded March 31,2006 |  |   | Three MonthsEndedSeptember 30, 2005 |   | Nine Months EndedSeptember 30,2005
|                                                             |  | (in millions)                      |      |                                 
|Revenues                                                     |  | $                                  | 34.7 |                                  | $ | 5.7  |                |  |                                 |  | $ | 8.7                                 |   |                                    | $ | 45.4 |  | $ | 98.2
|Operating Income (Loss)                                      |  |                                    |      |                                  |   |      |                |  |                                 |  |   |                                     |   |                                    |   |      |  |   |     
|Income (Loss) Before Taxes                                   |  |                                    | 30.3 |                                  |   | (0.9 | )              |  |                                 |  |   | (2.9                                | ) |                                    |   | 25.0 |  |   | 68.5
|Income Tax Expense (Benefit)                                 |  |                                    | 11.3 |                                  |   | (0.3 | )              |  |                                 |  |   | (1.0                                | ) |                                    |   | 9.6  |  |   | 26.3
|                                                             |  |                                    |      |                                  |   |      |                |  |                                 |  |   |                                     |   |                                    |   |      |  |   |     
|Income (Loss) from Discontinued Operations, net of tax       |  | $                                  | 19.0 |                                  | $ | (0.6 | )              |  |                                 |  | $ | (1.9                                | ) |                                    | $ | 15.4 |  | $ | 42.2
|                                                             |  |                                    |      |                                  |   |     
|Net Loss on Dispositions                                     |  |                                    |      |                                  |   |      |                |  |                                 |  |   |                                     |   |                                    |   |      |  |   |     
|Pre-tax loss on dispositions                                 |  | $                                  |     |                                  | $ |     |                |  |                                 |  | $ |                                    |   |                                    | $ |     |  | $ |    
|Income tax (benefit) expense                                 |  |                                    |     |                                  |   |     |                |  |                                 |  |   |                                    |   |                                    |   |     |  |   |    
|Loss on dispositions, net of tax                             |  |                                    |     |                                  |   |     |                |  |                                 |  |   |                                    |   |                                    |   |     |  |   |    
|                                                             |  |                                    |      |                                  |   |      |                |  |                                 |  |   |                                     |   |                                    |   |      |  |   |     
|Total Income (Loss) from Discontinued Operations, net of tax |  | $                                  | 19.0 |                                  | $ | (0.6 | )              |  |                                 |  | $ | (1.9                                | ) |                                    | $ | 15.4 |  | $ | 42.2



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



|                    |  |                   |     |  |  |                  |   |  
|------------------- |  | ----------------- | --- |  |  | ---------------- | - | -
|                    |  | Successor(1)      |     |  |  | Predecessor(1)  
|                    |  | September 30,2006 |     |  |  | December 31,2005
|                    |  | (in millions)    
|Assets              |  |                   |     |  |  |                  |   |  
|Current assets      |  | $                 | 136 |  |  |                  | $ | 
|Other assets        |  |                   | 75  |  |  |                  |   | 
|                    |  |                   |     |  |  |                  |   |  
|Total Assets        |  | $                 | 211 |  |  |                  | $ | 
|Liabilities         |  |                   |     |  |  |                  |   |  
|Current liabilities |  | $                 | 122 |  |  |                  | $ | 
|Other               |  |                   | 51  |  |  |                  |   | 
|                    |  |                   |     |  |  |                  |   |  
|Total Liabilities   |  | $                 | 173 |  |  |                  | $ | 

|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



11. Business Segments

In conjunction with the merger with Duke Energy,
effective April 3, 2006, Duke Energy Ohio adopted business segments that management believes aligns the various operations of the merged companies with how the chief operating decision maker views the business. Accordingly, effective with the
second quarter of 2006, the reportable business segments pertinent to Duke Energy Ohio are: U.S. Franchised Electric & Gas and Commercial Power. All prior period amounts have been restated to reflect the current segment presentation. Duke
Energy Ohios chief operating decision maker regularly reviews financial information about each of these business units in deciding how to allocate resources and evaluate performance. All of the business units are considered reportable segments
under SFAS No. 131, Disclosures about Segments of an Enterprise and Related Information.

The remainder of Duke Energy
Ohios operations are presented as Other. While it is not considered a business segment, Other for Duke Energy Ohio includes governance costs.

U.S. Franchised Electric & Gas consists of Duke Energy Ohios and its subsidiaries regulated electric and gas transmission and distribution systems and its regulated electric generation in Kentucky. U.S.
Franchised Electric & Gas plans, constructs, operates and maintains Duke Energy Ohios transmission and distribution systems and delivers gas and electric energy to consumers. These businesses are subject to cost of service rate making
where rates to be charged to customers are based on prudently incurred costs over a test period plus a reasonable rate of return.



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PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Commercial Power primarily consists of Duke Energy Ohios non-regulated generation in Ohio and the recently acquired merchant
generation assets discussed in Note 8 and the energy risk management activities associated with those assets. Commercial Power also performs energy marketing and trading activities. In October 2006, Duke Energy completed the sale of Commercial
Powers energy marketing and trading activities. These activities are included in the Commercial Power segment balance sheet presentation, however, they are not included in the income statement presentation since they are classified in (Loss)
Income from Discontinued Operations, net of tax, which is below the Income from Continuing Operations line on the Consolidated Statements of Operations. See Note 10 for additional information.

Management evaluates segment performance based on EBIT from continuing operations. Cash, cash equivalents, and short-term investments are managed centrally by
Cinergy and Duke Energy, so the interest and dividend income on those balances are excluded from the segments EBIT.

Transactions between
reportable segments are accounted for on the same basis as unaffiliated revenues and expenses in the accompanying Consolidated Financial Statements.



20



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PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Duke Energy Ohio Business Segment Data(1)



|                                      |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|------------------------------------- |  | -------------------- | ----- | -------------------- | - | ---- | ------------- |  | - | ----------------------------------------------------------------------------- | - |  | - | --- | -
|                                      |  | UnaffiliatedRevenues |       | IntersegmentRevenues |   |      | TotalRevenues |  |   | Segment EBIT/Consolidated Income from ContinuingOperations BeforeIncome Taxes |  
|                                      |  | (in millions)        |      
|Successor(2)                          |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|Three Months Ended September 30, 2006 |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|U.S. Franchised Electric & Gas        |  | $                    | 308   |                      | $ |     |               |  | $ | 308                                                                           |   |  | $ | 47  |  
|Commercial Power                      |  |                      | 468   |                      |   |     |               |  |   | 468                                                                           |   |  |   | 67  |  
|Total reportable segments             |  |                      | 776   |                      |   |     |               |  |   | 776                                                                           |   |  |   | 114 |  
|Other                                 |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (24 | )
|Interest expense                      |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (25 | )
|Interest income and other             |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | 5   |  
|Total consolidated                    |  | $                    | 776   |                      | $ |     |               |  | $ | 776                                                                           |   |  | $ | 70  |  
|                                      | 
|Six Months Ended September 30, 2006   |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|U.S. Franchised Electric & Gas        |  | $                    | 605   |                      | $ |     |               |  | $ | 605                                                                           |   |  | $ | 67  |  
|Commercial Power                      |  |                      | 867   |                      |   | 1    |               |  |   | 868                                                                           |   |  |   | 103 |  
|Total reportable segments             |  |                      | 1,472 |                      |   | 1    |               |  |   | 1,473                                                                         |   |  |   | 170 |  
|Other                                 |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (36 | )
|Eliminations                          |  |                      |      |                      |   | (1   | )             |  |   | (1                                                                            | ) |  |   |    |  
|Interest expense                      |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (54 | )
|Interest income and other             |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | 10  |  
|Total consolidated                    |  | $                    | 1,472 |                      | $ |     |               |  | $ | 1,472                                                                         |   |  | $ | 90  |  
|                                      | 
|                                      |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|                                      |  |                      |       |                     
|Predecessor(2)                        |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|Three Months Ended March 31, 2006     |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|U.S. Franchised Electric & Gas        |  | $                    | 543   |                      | $ |     |               |  | $ | 543                                                                           |   |  | $ | 80  |  
|Commercial Power                      |  |                      | 420   |                      |   | 1    |               |  |   | 421                                                                           |   |  |   | 166 |  
|Total reportable segments             |  |                      | 963   |                      |   | 1    |               |  |   | 964                                                                           |   |  |   | 246 |  
|Other                                 |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (39 | )
|Eliminations                          |  |                      |      |                      |   | (1   | )             |  |   | (1                                                                            | ) |  |   |    |  
|Interest expense                      |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (30 | )
|Interest income and other             |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | 9   |  
|Total consolidated                    |  | $                    | 963   |                      | $ |     |               |  | $ | 963                                                                           |   |  | $ | 186 |  
|                                      | 
|Three Months Ended September 30, 2005 |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|U.S. Franchised Electric & Gas        |  | $                    | 295   |                      | $ |     |               |  | $ | 295                                                                           |   |  | $ | 48  |  
|Commercial Power                      |  |                      | 295   |                      |   | 49   |               |  |   | 344                                                                           |   |  |   | 69  |  
|Total reportable segments             |  |                      | 590   |                      |   | 49   |               |  |   | 639                                                                           |   |  |   | 117 |  
|Other                                 |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (27 | )
|Eliminations                          |  |                      |      |                      |   | (49  | )             |  |   | (49                                                                           | ) |  |   |    |  
|Interest expense                      |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (27 | )
|Interest income and other             |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | 4   |  
|Total consolidated                    |  | $                    | 590   |                      | $ |     |               |  | $ | 590                                                                           |   |  | $ | 67  |  
|                                      | 
|Nine Months Ended September 30, 2005  |  |                      |       |                      |   |      |               |  |   |                                                                               |   |  |   |     |  
|U.S. Franchised Electric & Gas        |  | $                    | 1,074 |                      | $ |     |               |  | $ | 1,074                                                                         |   |  | $ | 166 |  
|Commercial Power                      |  |                      | 816   |                      |   | 128  |               |  |   | 944                                                                           |   |  |   | 205 |  
|Total reportable segments             |  |                      | 1,890 |                      |   | 128  |               |  |   | 2,018                                                                         |   |  |   | 371 |  
|Other                                 |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (72 | )
|Eliminations                          |  |                      |      |                      |   | (128 | )             |  |   | (128                                                                          | ) |  |   |    |  
|Interest expense                      |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | (73 | )
|Interest income and other             |  |                      |      |                      |   |     |               |  |   |                                                                              |   |  |   | 12  |  
|Total consolidated                    |  | $                    | 1,890 |                      | $ |     |               |  | $ | 1,890                                                                         |   |  | $ | 238 |  
|                                      | 



|(1) | Segment results exclude results of discontinued operations.
|--- | -----------------------------------------------------------

|(2) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------



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PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Segment assets in the following table are net of intercompany advances, intercompany notes receivable, intercompany current assets,
intercompany derivative assets, and investments in subsidiaries.

Total segment assets at September 30, 2006 and December 31, 2005 are as
indicated below:



|                                |  |                   |        |  |  |                  |   |      
|------------------------------- |  | ----------------- | ------ |  |  | ---------------- | - | -----
|                                |  | Successor(1)      |        |  |  | Predecessor(1)  
|                                |  | September 30,2006 |        |  |  | December 31,2005
|                                |  | (in millions)    
|Duke Energy Ohio Segment Assets |  |                   |        |  |  |                  |   |      
|U.S. Franchised Electric & Gas  |  | $                 | 4,006  |  |  |                  | $ | 3,523
|Commercial Power                |  |                   | 5,238  |  |  |                  |   | 3,496
|                                |  |                   |        |  |  |                  |   |      
|Total reportable segments       |  |                   | 9,244  |  |  |                  |   | 7,019
|Unallocated goodwill(3)         |  |                   | 2,177  |  |  |                  |   |     
|Eliminations(2)                 |  |                   | 108    |  |  |                  |   | 215  
|                                |  |                   |        |  |  |                  |   |      
|Total consolidated assets       |  | $                 | 11,529 |  |  |                  | $ | 7,234



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

|(2) | Eliminations include accounts and notes receivable from affiliates and short and long-term intercompany energy risk management assets.
|--- | --------------------------------------------------------------------------------------------------------------------------------------

|(3) | Goodwill recorded as of September 30, 2006 resulting from Duke Energys merger with Cinergy is $2,177 million. The valuation and other assessment procedures required to allocate this
goodwill to the appropriate reporting units and reportable segments is currently in process and is anticipated to be completed by the end of 2006. (see Note 2).
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



12. Risk Management Instruments



Energy Trading Credit Risk

Duke Energy Ohios extension of
credit for energy marketing and trading is governed by Duke Energys Corporate Credit Policy. Written guidelines approved by Duke Energy documents various required credit activities including credit limit delegation and approval limits,
underwriting rating criteria, and certain other credit management standards. Exposures to credit risks are monitored daily by the Corporate Credit Risk function, which is independent of all trading operations. As of September 30, 2006, 80
percent of Duke Energy Ohios credit exposure, net of credit collateral, related to energy trading and marketing activity was with counterparties rated investment grade or the counterparties obligations were guaranteed or secured by an
investment grade entity. The majority of these investment grade counterparties are externally rated. If a counterparty has an external rating, the lower of Standard & Poors Ratings Services or Moodys Investors Service is used;
otherwise, Duke Energys internal rating of the counterparty is used. Duke Energy Ohios remaining 20 percent represents net credit exposure of $33 million with counterparties rated non-investment grade.

As of September 30, 2006, Duke Energy Ohio did not have a concentration of trading credit exposure with any counterparty accounting for greater than 10 percent
of its total trading credit exposure.

Energy commodity prices can be extremely volatile and the market can, at times, lack liquidity. Because of
these issues, credit risk for energy commodities is generally greater than with other commodity trading.

Duke Energy Ohio continually reviews and
monitors its credit exposure to all counterparties and secondary counterparties. If appropriate, Duke Energy Ohio may adjust the credit reserves to attempt to compensate for increased credit risk within the industry. Counterparty credit limits may
be adjusted on a daily basis in response to changes in a counterpartys financial status or public debt ratings.



Derivatives



Generation Portfolio Optimization

Duke Energy Ohio attempts to optimize the value of its non-regulated portfolio. The
portfolio includes generation assets (power and capacity), fuel, and emission allowances. Modeled forecasts of future generation output, fuel requirements, and emission allowance requirements are based on forward power, fuel and emission allowance
markets. The component pieces of the portfolio are bought and sold based on this model in order to manage the economic value of the portfolio. The majority of the component pieces of the portfolio are accounted for using the accrual method. However,
with the issuance of SFAS No. 149,Amendment of Statement 133 on Derivative Instruments and Hedging Activities (SFAS No. 149), certain forward power transactions and certain coal transactions from management



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Notes To Consolidated Financial Statements(Continued)



of the portfolio are accounted for at fair value. As a result, these forward sales and purchases are subject to earnings volatility via mark-to-market gains or losses
from changes in the value of the contracts accounted for using fair value. In addition, the generation portfolio not utilized to serve native load or committed load is subject to commodity price fluctuations. This is primarily related to the
Midwestern generation assets transferred from Duke Energy (see Note 8). A spark spread sensitivity on these megawatt hour (MWh) was immaterial at September 30, 2006.



Trading & Marketing

Duke Energy Ohio measures the market risk inherent in the trading portfolio employing value at risk (VaR) analysis, as discussed in the 2005 10-K. The change in VaR from the 2005 10-K was not material to Duke Energy Ohios financial
position or results of operations.



Generation Related Cash Flow
Hedges

In connection with Duke Energys contribution of its unregulated generating assets to Duke Energy Ohio, Duke Energy Ohio assumed
approximately $63 million of pre-tax deferred losses associated with contracts formerly designated as cash flow hedges of forecasted power sales and gas purchases from Duke Energys Midwestern generation fleet. See Note 8 for additional
information. These contracts were sold by Duke Energy in 2005 and the deferred losses remain on the Consolidated Balance Sheet in Accumulated Other Comprehensive Income (AOCI) until the related hedged transactions (gas purchases and power
sales) occur. As of September 30, 2006, $26 million of the pre-tax deferred net losses on derivative instruments related to commodity cash flow hedges were accumulated on the Consolidated Balance Sheet in AOCI, and are expected to be
recognized in earnings during the next 12 months as the hedged transactions occur.



Total Return Swap

In connection with the Fortis transaction discussed in Note 10, on October 1, 2006 Duke Energy
Ohio entered into a series of Total Return Swaps (TRS) with Fortis, which will be accounted for as mark-to-market derivatives. The fair value of the TRS offsets the net fair value of the underlying contracts that will be transferred to Fortis. The
TRS will be cancelled as the underlying contracts are transferred to Fortis.

Also in connection with the sale to Fortis, Duke Energy provided Fortis
cash equal to the net cash collateral received by Duke Energy under the contracts.



13. Regulatory Matters



Regulatory Merger Approvals

As discussed in Note 2, on April 3, 2006, the merger between Duke Energy and Cinergy was consummated to create a newly formed company,
Duke Energy Holding Corp. (subsequently renamed Duke Energy Corporation). As a condition to the merger approval, the Public Utilities Commission of Ohio (PUCO) and the Kentucky Public Service Commission (KPSC) required that certain merger related
savings be shared with consumers in Ohio and Kentucky, respectively. The commissions also required Duke Energy Ohio and Duke Energy Kentucky to meet additional conditions. Key elements of these conditions include:

| |  |  | The PUCO required that Duke Energy Ohio provide (i) a rate reduction of approximately $15 million for one year to facilitate economic development in a time of increasing rates and market
prices and (ii) a reduction of approximately $21 million to Duke Energy Ohios gas and electric consumers in Ohio for one year, with both reductions beginning January 1, 2006. In April 2006, the Office of the Ohio Consumers
Council (OCC) filed a Notice of Appeal with the Supreme Court of Ohio, requesting the Court remand the PUCOs merger approval for a full evidentiary hearing. The OCC alleged that the PUCO improperly failed to: (i) set the matter for a full
evidentiary hearing; (ii) consider evidence regarding the transfer of certain DENA assets to Duke Energy Ohio; and (iii) lift the stay on discovery. Duke Energy Ohio and the OCC settled this matter and in June 2006, the Court granted the
OCCs motion to dismiss. As of September 30, 2006, Duke Energy Ohio has returned $11 million and $15 million, respectively, on each of these rate reductions.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | The KPSC required that Duke Energy Kentucky provide $8 million in rate reductions to Duke Energy Kentucky customers over five years, ending when new rates are established in the next rate
case after January 1, 2008. As of September 30, 2006, Duke Energy Kentucky has returned $1 million to customers on this rate reduction.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



The FERC approved the merger without conditions. In January 2006, Public Citizens Energy Program, Citizens Action Coalition of
Indiana, Inc., Ohio Partners for Affordable Energy and Southern Alliance for Clean Energy requested rehearing of the FERC approval. In February 2006, the FERC issued an order granting rehearing of FERCs order for further consideration. A
decision by the FERC is expected in the fourth quarter of 2006.



Duke Energy Ohio Electric Rate Filings

Duke Energy Ohio operates under a Market Based Standard Service Offer (MBSSO) which was
approved by the PUCO in November 2004. In March 2005, the OCC appealed the Commissions approval of the MBSSO to the Supreme Court of Ohio. The Supreme Court of Ohio recently ruled on the MBSSOs for two other Ohio utilities, and in each
of those rulings, upheld the market prices charged by the utility to its consumers as approved by the Commission but overturned the competitive bid process approved by the Commission on the basis that the Commission rejected the bid price on behalf
of consumers and the applicable statute requires customer involvement. Duke Energy Ohios MBSSO does not contain a competitive bid process pursuant to a statutory exception. Duke Energy Ohio does not expect a significant, if any, change to its
MBSSO as a result of this case but cannot predict the outcome of its case. Duke Energy Ohio expects the court to decide the case in 2006. On August 2, 2006, Duke Energy Ohio filed an application with the PUCO to extend Duke Energy Ohios
MBSSO. The proposal provides for continued electric system reliability, a simplified market price structure and clear price signals for customers, while helping to maintain a stable revenue stream for Duke Energy Ohio. The application is pending and
Duke Energy Ohio cannot predict the outcome of this proceeding.

Duke Energy Ohios MBSSO includes a fuel clause recovery component which is
audited annually by the PUCO. In January 2006, Duke Energy Ohio entered into a settlement resolving all open issues identified in the 2005 audit. The PUCO approved the settlement in February 2006. Duke Energy Ohio does not expect the agreement to
have a material impact on its consolidated results of operations, cash flows or financial position.

Duke Energy Ohio filed a distribution rate case
to recover certain distribution costs and certain costs that Duke Energy Ohio has deferred in 2004 and 2005 pursuant to its MBSSO. The parties to the proceeding agreed upon and filed a settlement setting the recommended annual revenue increase at
approximately $50 million. In December 2005, the PUCO issued an order approving the settlement agreement.



Duke Energy Kentucky Gas Rate

In 2002, the KPSC
approved Duke Energy Kentuckys gas base rate case which included, among other things, recovery of costs associated with an accelerated gas main replacement program. The approval authorized a tracking mechanism to recover certain costs
including depreciation and a rate of return on the programs capital expenditures. The Kentucky Attorney General appealed to the Franklin Circuit Court the KPSCs approval of the tracking mechanism as well as the KPSCs subsequent
approval of annual rate adjustments under this tracking mechanism. In 2005, both Duke Energy Kentucky and the KPSC requested that the court dismiss these cases. At the present time, Duke Energy Kentucky cannot predict the timing or outcome of this
litigation.

In February 2005, Duke Energy Kentucky filed a gas base rate case with the KPSC requesting approval to continue the tracking mechanism
and for a $14 million annual increase in base rates. A portion of the increase is attributable to recovery of the current cost of the accelerated main replacement program in base rates. In December 2005, the KPSC approved an annual rate increase of
$8 million and re-approved the tracking mechanism through 2011. In February 2006, the Kentucky Attorney General appealed the KPSCs order to the Franklin Circuit Court, claiming that the order improperly allows Duke Energy Kentucky to increase
its rates for gas main replacement costs in between general rate cases, and also claiming that the order improperly allows Duke Energy Kentucky to earn a return on investment for the costs recovered under the tracking mechanism which permits Duke
Energy Kentucky to recover its gas main replacement costs. At this time, Duke Energy Kentucky cannot predict the outcome of this litigation.



Duke Energy Kentucky Electric Rate Case

In May
2006, Duke Energy Kentucky filed an application for an increase in its base electric rates. The application, which seeks an increase of approximately $67 million in revenue, or approximately 28 percent, to be effective in January 2007 was filed
pursuant to the KPSCs 2003 Order approving the transfer of 1,100 MW of generating assets from Duke Energy Ohio to Duke Energy Kentucky. Duke Energy Kentucky also seeks to reinstitute its fuel cost recovery mechanism which has been frozen since
2001, and has proposed to refresh the pricing for the back-up power supply contract to reflect current market pricing. After Duke Energy Kentucky supplemented its



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filing in June 2006, the KPSC issued an order in June 2006, shortening the notice period for new rates from 30 to 20 days and suspending rates for six months, until
January 6, 2007. Duke Energy Kentucky has reached a settlement agreement in principle with all parties to this proceeding resolving all the issues raised in the proceeding. Among other things, the settlement agreement provides for a $49 million
increase in Duke Energy Kentuckys base electric rates. The KPSC is expected to render a decision on the settlement agreement during the fourth quarter of 2006. At this time, Duke Energy Kentucky cannot predict the outcome of this proceeding.



PUCO Gas Pipeline System Investigation

In April 2005, the PUCO issued an order opening a statewide investigation into riser leaks in gas pipeline systems throughout Ohio. At this time, Duke Energy Ohio
cannot predict the outcome or the impact of the statewide investigation.



Midwest ISO Revenue Sufficiency Guarantee (RSG)

In April 2006, the FERC issued an order on the Midwest ISOs revisions to
its Transmission and Energy Markets Tariffs regarding its RSG. The FERC found that the Midwest ISO violated the tariffs when it did not charge RSG costs to virtual supply offers. The FERC, among other things, ordered the Midwest ISO to recalculate
the rate and make refunds to customers, with interest, to reflect the correct allocation of RSG costs. Duke Energy Shared Services, on behalf of Duke Energy Ohio, has filed a Request for Rehearing, and in October 2006, the FERC issued an order
which, among other things, granted rehearing on the issue of refunds. The FERC stated that it would not require recalculation of the rates and, as such, refunds are no longer required. As a result, Duke Energy Ohio does not believe that this issue
will have a material effect on its consolidated financial position, cash flows or results of operations.



14. Commitments and Contingencies



Environmental

Emission Reduction Rulemakings

In
October 1998, the Environmental Protection Agency (EPA) finalized its ozone transport rule, also known as the NOX State Implementation Plan (SIP) Call, which addresses wind-blown ozone and ozone precursors that impact air quality in
downwind states. The EPAs final rule, which applies to 22 states in the eastern United States including Ohio and Kentucky, required states to develop rules to reduce NOX emissions from utility and industrial sources.

Duke Energy Ohio has installed selective catalytic reduction units and other pollution controls and implemented certain combustion improvements at various
generating stations to comply with the NOX SIP Call. Duke Energy Ohio also utilizes the NOX emission allowance market to buy or sell NOX emission allowances as appropriate. As of September 30, 2006, Duke Energy
Ohio has incurred approximately $275 million in capital costs to comply with this program and does not anticipate significant additional costs.

The
EPA finalized its Clear Air Interstate Rule (CAIR) in May 2005. The rule limits total annual and summertime NOX emissions and annual SO2 emissions from electric generating facilities across the Eastern United States through a
two-phased cap-and-trade program. Phase 1 begins in 2009 for NOX and in 2010 for SO2. Phase 2 begins in 2015 for both nitrogen oxides (NOX) and sulfur dioxide (SO2). The rule requires region wide
SO2 and NOX emissions to be cut by 70 percent and 65 percent, respectively, by 2015. The rule gives states the option of participating in the national emissions allowance trading program. If a state chooses not to participate,
then the rule sets a fixed limit on the emissions from that states affected sources.

The EPA finalized its Clean Air Mercury Rule (CAMR) in May
2005. The rule limits total annual mercury emissions from coal-fired power plants across the United States through a two-phased cap-and-trade program. Phase 1 begins in 2010 and Phase 2 begins in 2018. The rule gives states the option of
participating in the national emissions allowance trading program. If a state chooses not to participate, then the rule sets a fixed limit on annual mercury emissions from that states coal-fired power plants.

Numerous states and other parties, including Duke Energy Ohio, have challenged various portions of the rules. Those challenges are currently pending in the United
States Circuit Court for the District of Columbia. On October 21, 2005, the EPA agreed to reconsider certain aspects of the CAMR as well as the determination not to regulate mercury under Section 112 of the Clean Air Act (CAA). On
June 9, 2006, the EPA took final action on the issues being reconsidered and determined that its original decisions were reasonable and should not be changed. At this time, Duke Energy Ohio cannot predict the outcome of these legal challenges.



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Duke Energy Ohio has spent approximately $150 million through 2005 to comply with Phase 1 of the CAIR and CAMR rules and currently
estimates that it will spend an additional approximately $500 million over the 2006-2011 time period. The projected

expenditures include estimated costs to comply at
plants that Duke Energy Ohio owns or partially owns but does not operate and could change when taking into consideration compliance plans of co-owners or operators involved. Moreover, as market conditions change, additional compliance options may
become available and Duke Energy Ohios plans will be adjusted accordingly. Duke Energy Ohio receives partial recovery of depreciation and financing costs related to environmental compliance projects for 2005-2008 through its MBSSO. See Note 13
for more details. Duke Energy Ohio believes all costs determined to have been prudently incurred to comply with such rules will be recovered through rates approved by the PUCO or KPSC.

The EPA made final state non-attainment area designations to implement the revised ozone standard and to implement the new fine particulate standard in June 2004
and April 2005, respectively. Several counties in which Duke Energy Ohio operates have been designated as being in non-attainment with the new ozone standard and/or fine particulate standard. States with counties that are designated as being in
non-attainment with the new ozone and/or fine particulate standards are required to develop a plan of compliance by June 2007 and April 2008, respectively. Industrial sources in or near those counties are potentially subject to requirements for
installation of additional pollution controls. In March 2005, various states, local governments, environmental groups, and industry groups, including some of which Duke Energy Ohio is a member, filed petitions for review in the U.S. Court of Appeals
for the D.C. Circuit to challenge the EPAs particulate matter non-attainment designations. Although the EPA has attempted to structure CAIR to resolve purported utility contributions to ozone and fine particulate non-attainment, at this time,
Duke Energy Ohio cannot predict the effect of current or future non-attainment designations on its consolidated financial position, cash flows or results of operations.

In July 2005, the EPA issued its final regional haze rules and implemented guidelines in response to a 2002 judicial ruling overturning key provisions of the original program. The regional haze program is aimed at reducing
certain emissions impacting visibility in national parks and wilderness areas. The EPA has announced that it can foresee no circumstances where the requirements of the regional haze rule would require utility controls beyond those required under
CAIR. The EPA also found that states participating in the CAIR cap and trade program need not require electric generating units to adhere to best available retrofit technology requirements. The states have until December 2007 to finalize their SIPs
addressing compliance with EPA regulations. The states may choose to implement more stringent guidelines than promulgated by the EPA, and therefore, it is not possible to predict whether the regional haze rule will have a material effect on Duke
Energy Ohios consolidated financial position, cash flows or results of operations.



Section 126 Petitions

In March 2004, the state of North Carolina filed a petition under Section 126 of the CAA
in which it alleges that sources in 13 upwind states, including Ohio and Kentucky, significantly contribute to North Carolinas non-attainment with certain ambient air quality standards. In August 2005, the EPA issued a proposed response to the
petition. The EPA proposed to deny the ozone portion of the petition based upon a lack of contribution to air quality by the named states. The EPA also proposed to deny the particulate matter portion of the petition based upon the CAIR Federal
Implementation Plan (FIP), that would address the air quality concerns from neighboring states. On April 28, 2006, the EPA denied North Carolinas petition based upon the final CAIR FIP described above. North Carolina has filed a legal
challenge to the EPAs denial.



Clean Water Act Rulemaking

The EPAs final Clean Water Act Section 316(b) rule became effective July 9, 2004. The rule establishes aquatic protection
requirements for existing facilities that withdraw 50 million gallons or more of water per day from rivers, streams, lakes, reservoirs, estuaries, oceans, or other U.S. waters for cooling purposes. Four of seven coal-fueled generating
facilities in which Duke Energy Ohio is either a whole or partial owner are affected sources under the rule. The rule requires a Comprehensive Demonstration Study (CDS) for each affected facility to provide information needed to determine necessary
facility-specific modifications and cost estimates for implementation. These studies will be completed over the next three to five years. Once compliance measures are determined and approved by regulators, a facility will typically have five or more
years to implement the measures. Due to the wide range of measures potentially applicable to a given facility, and since the final selection of compliance measures will be at least partially dependent upon the CDS information, Duke Energy Ohio is
not able to estimate its cost for complying with the rule at this time.



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Clean Air Act Lawsuits

In
November 1999, and through subsequent amendments, the United States brought a lawsuit in the United States Federal District Court for the Southern District of Indiana against Duke Energy Ohio alleging various violations of the CAA. Specifically, the
lawsuit alleges that Duke Energy Ohio violated the CAA by not obtaining Prevention of Significant Deterioration (PSD), Non-Attainment New Source Review (NSR), and Ohio and Indiana SIP permits for various projects at Duke Energy Ohios owned and
co-owned generating stations. Additionally, the suit claims that Duke Energy Ohio violated an Administrative Consent Order entered into in 1998 between the EPA and Cinergy relating to alleged violations of Ohios SIP provisions governing
particulate matter at Unit 1 at Duke Energy Ohios W.C. Beckjord Station. The suit seeks (1) injunctive relief to require installation of pollution control technology on various generating units at Duke Energy Ohios W.C. Beckjord and
Miami Fort Stations and (2) civil penalties in amounts of up to $27,500 per day for each violation. In addition, three Northeast states and two environmental groups have intervened in the case. In August 2005, the district court issued a ruling
regarding the emissions test that it will apply to Duke Energy Ohio at the trial of the case. Contrary to Duke Energy Ohios argument, the district court ruled that in determining whether a project was projected to increase annual emissions, it
would not hold hours of operation constant. However, the district court subsequently certified the matter for interlocutory appeal to the Seventh Circuit Court of Appeals, which has accepted the appeal. In August 2006, the Seventh Circuit upheld the
district courts opinion. Duke Energy Ohio is considering whether to appeal this ruling to the Supreme Court. However, the same issue is already before the Supreme Court in Duke Energys NSR case, and Duke Energy Ohio does not expect
further dispositive legal proceedings in its case until after the Supreme Court ruling, which is not expected until the first half of 2007.

In March
2000, the United States also filed in the United States District Court for the Southern District of Ohio an amended complaint in a separate lawsuit alleging violations of the CAA relating to PSD, NSR, and Ohio SIP requirements regarding various
generating stations, including a generating station operated by Columbus Southern Power Company (CSP) and jointly-owned by CSP, The Dayton Power and Light Company (DP&L), and Duke Energy Ohio. The EPA is seeking injunctive relief and civil
penalties of up to $27,500 per day for each violation. This suit is being defended by CSP. In April 2001, the United States District Court for the Southern District of Ohio in that case ruled that the Government and the intervening plaintiff
environmental groups cannot seek monetary damages for alleged violations that occurred prior to November 3, 1994; however, they are entitled to seek injunctive relief for such alleged violations. Neither party appealed that decision. This
matter was heard in trial in July 2005. A decision is pending.

In addition, Duke Energy Ohio has been informed by DP&L that in June 2000, the EPA
issued a Notice of Violation (NOV) to DP&L for alleged violations of PSD, NSR, and Ohio SIP requirements at a station operated by DP&L and jointly-owned by DP&L, CSP, and Duke Energy Ohio. The NOV indicated the EPA may (1) issue an
order requiring compliance with the requirements of the Ohio SIP, or (2) bring a civil action seeking injunctive relief and civil penalties of up to $27,500 per day for each violation. In September 2004, Marilyn Wall and the Sierra Club brought
a lawsuit against Duke Energy Ohio, DP&L and CSP for alleged violations of the CAA at this same generating station. This case is currently in discovery in front of the same judge who has the CSP case.

At this time, Duke Energy Ohio is unable to predict whether resolution of these matters would have a material effect on its consolidated financial position, cash
flows or results of operations. Duke Energy Ohio intends to vigorously defend against these allegations.



Carbon Dioxide (CO2) Lawsuit

In July 2004, the states of Connecticut, New York, California, Iowa, New Jersey, Rhode Island, Vermont, Wisconsin, and the City of New York brought a lawsuit in the
United States District Court for the Southern District of New York against Duke Energy Ohio, American Electric Power Company, Inc., American Electric Power Service Corporation, The Southern Company, Tennessee Valley Authority, and Xcel Energy Inc.
That same day, a similar lawsuit was filed in the United States District Court for the Southern District of New York against the same companies by Open Space Institute, Inc., Open Space Conservancy, Inc., and The Audubon Society of New Hampshire.
These lawsuits allege that the defendants emissions of CO2 from the combustion of fossil fuels at electric generating facilities contribute to global warming and amount to a public nuisance. The complaints also allege that the
defendants could generate the same amount of electricity while emitting significantly less CO2. The plaintiffs are seeking an injunction requiring each defendant to cap its CO2emissions and then reduce them by a specified
percentage each year for at least a decade. In September 2005, the district court granted the defendants motion to dismiss the lawsuit. The plaintiffs have appealed this ruling to the Second Circuit Court of Appeals. Oral argument was held
before the Second Circuit Court of Appeals in June 2006. Duke Energy Ohio is not able to predict whether resolution of these matters would have a material effect on its consolidated financial position, cash flows or results of operations.



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Zimmer Generating Station (Zimmer Station) Lawsuit

In November 2004, a citizen of the Village of Moscow, Ohio, the town adjacent to Duke Energy Ohios Zimmer Station, brought a purported class action in the
United States District Court for the Southern District of Ohio seeking monetary damages and injunctive relief against Duke Energy Ohio for alleged violations of the CAA, the Ohio SIP, and Ohio laws against nuisance and common law nuisance. The
plaintiffs have filed a number of additional notices of intent to sue and two lawsuits raising claims similar to those in the original claim. One lawsuit was dismissed on procedural grounds, and the remaining two have been consolidated. The
plaintiff filed a motion for class certification, which is fully briefed and pending decision. At this time, Duke Energy Ohio cannot predict whether the outcome of this matter will have a material impact on its consolidated financial position, cash
flows or results of operations. Duke Energy Ohio intends to defend this lawsuit vigorously in court.



Manufactured Gas Plant (MGP) Sites

Duke Energy Ohio has
performed site assessments on certain of its sites where MGP activities are believed to have occurred at some point in the past and have found no imminent risk to the environment. At this time, Duke Energy Ohio cannot predict whether investigation
and/or remediation will be required in the future at any of these sites.



Ontario, Canada Lawsuit

Duke Energy Ohio understands that a class action lawsuit was filed in Superior Court in Ontario, Canada
against Duke Energy Ohio and approximately 20 other utility and power generation companies alleging various claims relating to environmental emissions from coal-fired power generation facilities in the United States and Canada and damages of
approximately $50 billion, with continuing damages in the amount of approximately $4 billion annually. Duke Energy Ohio understands that the lawsuit also claims entitlement to punitive and exemplary damages in the amount of $1 billion. Duke Energy
Ohio has not yet been served in this lawsuit; however, if served, Duke Energy Ohio intends to defend this lawsuit vigorously in court. At this time, Duke Energy Ohio is not able to predict whether resolution of this matter would have a material
effect on its consolidated financial position, cash flows or results of operations.



Hurricane Katrina Lawsuit

On April 19, 2006, Duke Energy Ohio was named in the third amended complaint of a
purported class action filed in the United States District Court for the Southern District of Mississippi. Plaintiffs claim that Duke Energy Ohio, along with numerous other utilities, oil companies, coal companies and chemical companies, is liable
for damages relating to losses suffered by victims of Hurricane Katrina. Plaintiffs claim that Duke Energy Ohios, and others, greenhouse gas emissions contributed to the frequency and intensity of storms such as Hurricane Katrina. Duke
Energy Ohio intends to defend this lawsuit vigorously in court. It is not possible to predict with certainty whether Duke Energy Ohio will incur any liability or to estimate the damages, if any, that Duke Energy Ohio might incur in connection with
this matter.



Other Litigation and Legal Proceedings

Duke Energy Ohio is involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which could involve substantial
amounts. Management believes that the final disposition of these proceedings will not have a material adverse effect on Duke Energy Ohios consolidated results of operations, cash flows or financial position.

Duke Energy Ohio has exposure to certain legal matters that are described herein. As of September 30, 2006 and December 31, 2005, Duke Energy Ohio has
recorded immaterial reserves for these proceedings and exposures. Duke Energy Ohio expenses legal costs related to the defense of loss contingencies as incurred.

As part of its normal business, Duke Energy Ohio is party to various financial guaranties, performance guaranties, and other contractual commitments to extend guaranties of credit and other assistance to various subsidiaries,
investees, and other third parties. To varying degrees, these guaranties involve elements of performance and credit risk, which are not included on the Consolidated Balance Sheets. The possibility of Duke Energy Ohio having to honor its
contingencies is largely dependent upon future operations of various subsidiaries, investees, and other third parties, or the occurrence of certain future events.

In addition, Duke Energy Ohio enters into various fixed-price, non-cancelable commitments to purchase or sell power (tolling arrangements or power purchase contracts), take-or-pay arrangements, transportation or throughput
agreements, and other contracts that may



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or may not be recognized on the Consolidated Balance Sheets. Some of these arrangements may be recognized at market value on the Consolidated Balance Sheets as trading
contracts or qualifying hedge positions included in unrealized gains or losses on MTM and hedging transactions.



15. Related Party Transactions

Duke Energy Ohio engages in related party
transactions. These transactions are generally performed at cost and in accordance with the applicable state and federal commission regulations. Balances due to or due from related parties included in the Consolidated Balance Sheets as of
September 30, 2006 and December 31, 2005 are as follows:



|                        |  |                    |     |  |  |                   |   |    
|----------------------- |  | ------------------ | --- |  |  | ----------------- | - | ---
|                        |  | September 30, 2006 |     |  |  | December 31, 2005
|                        |  | (in millions)     
|Current assets          |  | $                  | 59  |  |  |                   | $ | 48 
|Non-current assets      |  | $                  | 8   |  |  |                   | $ |   
|Current liabilities     |  | $                  | 192 |  |  |                   | $ | 243
|Non-current liabilities |  | $                  | 45  |  |  |                   | $ | 30 

Duke Energy Ohio is allocated its proportionate share of corporate governance and other costs by a
consolidated affiliate of Duke Energy. Duke Energy Ohio is also allocated its proportionate share of other corporate governance costs from a consolidated affiliate of Cinergy. Corporate governance and other shared services costs are primarily
allocations of corporate costs, such as human resources, legal and accounting fees, as well as other costs.

The expenses associated with corporate
governance and other service costs for Duke Energy Ohio for the three and six months ended September 30, 2006, for the three months ended March 31, 2006 and September 30, 2005 and the nine months ended September 30, 2005 were as
follows:

|                                                |  |                                    |    |                                  |   |                |  |                                |  |                                    |    |                                   |   |    |  |   |    
|----------------------------------------------- |  | ---------------------------------- | -- | -------------------------------- | - | -------------- |  | ------------------------------ |  | ---------------------------------- | -- | --------------------------------- | - | -- |  | - | ---
|                                                |  | Successor(1)                       |    |                                  |   | Predecessor(1)
|                                                |  | Three MonthsEndedSeptember 30,2006 |    | Six MonthsEndedSeptember 30,2006 |   |                |  | Three MonthsEndedMarch 31,2006 |  | Three MonthsEndedSeptember 30,2005 |    | Nine MonthsEndedSeptember 30,2005
|                                                |  | (in millions)                     
|Corporate governance and other service expenses |  | $                                  | 77 |                                  | $ | 175            |  |                                |  | $                                  | 99 |                                   | $ | 75 |  | $ | 227



|(1) | See Note 1 for additional information on Predecessor and Successor reporting.
|--- | -----------------------------------------------------------------------------

See Note 7 for detail on expense amounts allocated from Cinergy to Duke Energy Ohio related to Duke Energy Ohios participation in Cinergys qualified and non-qualified defined benefit pension plans and health care and insurance
benefits. Additionally, Duke Energy Ohio has been allocated accrued pension and other postretirement benefit obligations from Cinergy of approximately $366 million at September 30, 2006 and approximately $246 million at December 31, 2005
which are classified as Accrued Pension and Other Postretirement Benefit Costs on the Consolidated Balance Sheets.

Additionally, certain trade
receivables have been sold by Duke Energy Ohio to Cinergy Receivables Company, LLC (Cinergy Receivables), an unconsolidated entity formed by Cinergy. The proceeds obtained from the sales of receivables are largely cash but do include a subordinated
note from Cinergy Receivables for a portion of the purchase price. This subordinated note is classified by Duke Energy Ohio as Receivables in the Consolidated Balance Sheets and was approximately $48 million and $177 million as of September 30,
2006 and December 31, 2005, respectively.

See Note 8 for a discussion of amounts paid to Duke Energy Ohio as a result of the agreement between
Duke Capital and Duke Energy Ohio related to Duke Energys contribution of its ownership interests in five plants to Duke Energy Ohio.

See Note
6 for a discussion of amounts outstanding as of September 30, 2006 and December 31, 2005 under the money pool arrangement with Cinergy.



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16. New Accounting Standards

The following
new accounting standards were adopted by Duke Energy Ohio subsequent to September 30, 2005 and the impacts of such adoptions, if applicable, have been presented in the accompanying Consolidated Financial Statements:

SFAS No. 153, Exchanges of Nonmonetary Assets  an amendment of APB Opinion No. 29 (SFAS No. 153). In December 2004, the FASB
issued SFAS No. 153 which amends APB Opinion No. 29, Accounting for Nonmonetary Transactions, by eliminating the

exception to the
fair-value principle for exchanges of similar productive assets, which were accounted for under APB Opinion No. 29 based on the book value of the asset surrendered with no gain or loss recognition. SFAS No. 153 also eliminates APB Opinion
No. 29s concept of culmination of an earnings process. The amendment requires that an exchange of nonmonetary assets be accounted for at fair value if the exchange has commercial substance and fair value is determinable within reasonable
limits. Commercial substance is assessed by comparing the entitys expected cash flows immediately before and after the exchange. If the difference is significant, the transaction is considered to have commercial substance and should be
recognized at fair value. SFAS No. 153 was effective for nonmonetary transactions occurring on or after July 1, 2005. The adoption of SFAS No. 153 did not have a material impact on Duke Energy Ohios consolidated results of
operations, cash flows, or financial position.

FASB Interpretation No (FIN) 47 Accounting for Conditional Asset Retirement
Obligations(FIN 47). In March 2005, the FASB issued FIN 47, which clarifies the accounting for conditional asset retirement obligations as used in SFAS No. 143, Accounting for Asset Retirement Obligations (SFAS
No. 143). A conditional asset retirement obligation is an unconditional legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be
within the control of the entity. Therefore, an entity is required to recognize a liability for the fair value of a conditional asset retirement obligation under SFAS No. 143 if the fair value of the liability can be reasonably estimated. The
provisions of FIN 47 were effective for Duke Energy Ohio as of December 31, 2005 and a loss of approximately $3 million (net of tax) was recognized for the cumulative effect of this change in accounting principle. The effect of
adoption for Duke Energy Ohio included balance sheet reclassifications of approximately $27 million from Regulatory liabilities. The increase in asset retirement obligations from adopting FIN 47 was $39 million for Duke Energy Ohio.

FASB Staff Position (FSP) No. Financial Accounting Standards (FAS) 115-1 and 124-1, The Meaning of Other-Than-Temporary Impairment and its Application
to Certain Investments (FSP No FAS 115-1 and 124-1). The FASB issued FSP No. FAS 115-1 and 124-1 in November 2005, which was effective for Duke Energy Ohio beginning January 1, 2006. This FSP addresses the determination as to when an
investment is considered impaired, whether that impairment is other than temporary, and the measurement of an impairment loss. This FSP also includes accounting considerations subsequent to the recognition of an other-than-temporary impairment and
requires certain disclosures about unrealized losses that have not been recognized as other-than-temporary impairments. The guidance in this FSP amends SFAS No. 115, Accounting for Certain Investments in Debt and Equity
Securities, SFAS No. 124, Accounting for Certain Investments Held by Not-for-Profit Organizations, and APB Opinion No. 18, The Equity Method of Accounting for Investments in Common Stock. The
adoption of FSP No. FAS 115-1 and 124-1 did not have a material impact on Duke Energy Ohios consolidated results of operations, cash flows, or financial position.

FSP No. FIN 46(R)-6, Determining the Variability to Be Considered In Applying Interpretation No. 46(R) (FSP No.-FIN 46(R)-6).In April 2006, the FASB staff issued FSP No. FIN 46(R)-6 to address
how to determine the variability to be considered in applying FIN 46(R),Consolidation of Variable Interest Entities.The variability that is considered in applying FIN 46(R) affects the determination of whether the
entity is a variable interest entity (VIE), which interests are variable interests in the entity, and which party, if any, is the primary beneficiary of the VIE. The variability affects the calculation of expected losses and expected residual
returns. This guidance will be applied prospectively to all entities with which Duke Energy Ohio first becomes involved or existing entities for which a reconsideration event occurs after July 1, 2006. Given the prospective nature of this
guidance, Duke Energy Ohio does not anticipate the adoption of FSP No. FIN 46(R)-6 will have any material impact on its consolidated results of operations, cash flows, or financial position. However, Duke Energy Ohio continues to evaluate the
ramifications to potential new arrangements along with any possible reconsideration events for existing

arrangements. In particular, the guidance is not clear how
certain types of power purchase or sale arrangements should be handled and whether such arrangements create variability, absorb variability, or neutralize variability.

The following new accounting standards have been issued but have not yet been adopted by Duke Energy Ohio as of September 30, 2006:

SFAS No. 155, Accounting for Certain Hybrid Financial Instruments  an amendment of FASB SFAS No. 133 and 140 (SFAS No. 155).In February 2006, the FASB issued SFAS No. 155, which amends SFAS
No. 133, Accounting for Derivative Instruments and



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Hedging Activitiesand SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities(SFAS
No. 140). SFAS No. 155 allows financial instruments that have embedded derivatives to be accounted for at fair value at acquisition, at issuance, or when a previously recognized financial instrument is subject to a remeasurement (new
basis) event, on an instrument-by-instrument basis, in cases in which a derivative would otherwise have to be bifurcated. SFAS No. 155 is effective for Duke Energy Ohio for all financial instruments acquired, issued, or subject to
remeasurement after January 1, 2007, and for certain hybrid financial instruments that have been bifurcated prior to the effective date, for which the effect is to be reported as a cumulative-

effect adjustment to beginning retained earnings. Duke Energy Ohio does not anticipate the adoption of SFAS No. 155 will have any material impact on its consolidated results
of operations, cash flows, or financial position.

SFAS No. 157, Fair Value Measurements (SFAS No. 157).In September
2006, the FASB issued SFAS No. 157, which defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles (GAAP), and expands disclosures about fair value measurements. SFAS No. 157 does not
require any new fair value measurements. However, in some cases, the application of SFAS No. 157 may change Duke Energy Ohios current practice for measuring and disclosing fair values under other accounting pronouncements that require or
permit fair value measurements. For Duke Energy Ohio, SFAS No. 157 is effective as of January 1, 2008 and must be applied prospectively except in certain cases. Duke Energy Ohio is currently evaluating the impact of adopting SFAS
No. 157, and cannot currently estimate the impact of SFAS No. 157 on its consolidated results of operations, cash flows or financial position.

Staff Accounting Bulletin (SAB) No. 108, Considering the Effects of Prior Year Misstatements When Quantifying Misstatements in Current Year Financial Statements (SAB No. 108). In September 2006 the SEC issued
SAB No. 108, which provides interpretive guidance on how the effects of the carryover or reversal of prior year misstatements should be considered in quantifying a current year misstatement. Traditionally, there have been two widely-recognized
approaches for quantifying the effects of financial statement misstatements. The income statement approach focuses primarily on the impact of a misstatement on the income statement  including the reversing effect of prior year misstatements
 but its use can lead to the accumulation of misstatements in the balance sheet. The balance sheet approach, on the other hand, focuses primarily on the effect of correcting the period-end balance sheet with less emphasis on the reversing
effects of prior year errors on the income statement. The SEC staff believes that registrants should quantify errors using both a balance sheet and an income statement approach (a dual approach) and evaluate whether either approach
results in quantifying a misstatement that, when all relevant quantitative and qualitative factors are considered, is material.

SAB No. 108 is
effective for Duke Energy Ohios year ending December 31, 2006. SAB No. 108 permits existing public companies to initially apply its provisions either by (i) restating prior financial statements as if the dual
approach had always been used or (ii), under certain circumstances, recording the cumulative effect of initially applying the dual approach as adjustments to the carrying values of assets and liabilities as of January 1, 2006
with an offsetting adjustment recorded to the opening balance of retained earnings. Duke Energy Ohio currently uses a dual approach for quantifying identified financial statement misstatements. Therefore, Duke Energy Ohio does not anticipate the
adoption of SAB No. 108 will have any material impact on its consolidated results of operations, cash flows or financial position.

FASB
Interpretation No. (FIN) 48, Accounting for Uncertainty in Income Taxes  an interpretation of FASB Statement No. 109 (FIN No. 48). On July 13, 2006, the FASB issued FIN 48, which interprets SFAS No. 109,
Accounting for Income Taxes.FIN No. 48 provides guidance for the recognition, measurement, classification, and disclosure of the financial statement effects of a position taken or expected to be taken in a tax return
(tax position). The financial statement effects of a tax position must be recognized when there is a likelihood of more than 50 percent that based solely on the technical merits, the position will be sustained upon final resolution. A
tax position that meets the recognition threshold must be measured initially and subsequently as the largest amount of tax benefit that is greater than 50 percent likely of being realized upon final resolution. The Interpretation is effective
for fiscal years beginning after December 15, 2006. Duke Energy Ohio is currently evaluating the impact of adopting FIN No. 48, and cannot currently estimate the impact of adopting FIN No. 48 on its consolidated results of
operations, cash flows, or financial position.

FSP No. AUG AIR-1, Accounting for Planned Major Maintenance Activities (FSP No. AUG
AIR-1).In September 2006, the FASB Staff issued FSP No. AUG AIR-1. This FSP prohibits the use of the accrue-in-advance method of accounting for planned major maintenance activities in annual and interim financial reporting periods, if no
liability is required to be recorded for an asset retirement obligation based on a legal obligation for which the event obligating the entity has occurred. The FSP also requires disclosures regarding the method of accounting for planned major
maintenance activities and the effects of implementing the FSP. The guidance in this FSP is effective for



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



Duke Energy Ohio as of January 1, 2007 and will be applied and retrospectively for all financial statements presented. Duke Energy Ohio does not anticipate
the adoption of FSP No. AUG AIR-1 will have any material impact on its consolidated results of operations, cash flows or financial position.

Emerging Issues Task Force (EITF) Issue No. 06-3, How Taxes Collected from Customers and Remitted to Governmental Authorities Should Be Presented in the Income Statement (That Is, Gross versus Net Presentation)
(EITF No. 06-3). In June 2006, the EITF reached a consensus on EITF No. 06-3 to address any tax assessed by a governmental authority that is directly imposed on a revenue-producing transaction between a seller and a customer and may
include, but are not limited to, sales, use, value added, and some excise taxes. For taxes within the Issues scope, the consensus requires that entities present such taxes on either a gross (i.e., include in revenues and costs) or net (i.e.,
exclude from revenues) basis according to their accounting policies, which should be disclosed. If such taxes are reported gross and are significant, entities should disclose the amounts of those taxes. Disclosures may be made on an aggregate basis.
The consensus is effective for Duke Energy Ohio beginning January 1, 2007; however, Duke Energy Ohio has disclosed the impacts of certain excise taxes on their revenues. (See Note 1) Duke Energy Ohio does not anticipate the adoption of EITF
No. 06-3 will have any material impact on its consolidated results of operations, cash flows or financial position.

EITF Issue No. 06-5,
Accounting for Purchases of Life Insurance  Determining the Amount That Could Be Realized in Accordance with FASB Technical Bulletin No. 85-4 (EITF No. 06-5). In June 2006, the EITF reached a consensus on the
accounting for corporate-owned and bank-owned life insurance policies. EITF No. 06-5 requires that a policyholder consider the cash surrender value and any additional amounts to be received under the contractual terms of the policy in
determining the amount that could be realized under the insurance contract. Amounts that are recoverable by the policyholder at the discretion of the insurance company must be excluded from the amount that could be realized. Fixed amounts that are
recoverable by the policyholder in future periods in excess of one year from the surrender of the policy must be recognized at their present value. EITF No. 06-5 is effective for Duke Energy Ohio as of January 1, 2007 and must be applied
as a change in accounting principle through a cumulative-effect adjustment to retained earnings or other components of equity as of January 1, 2007. Duke Energy Ohio is currently evaluating the impact of adopting EITF No. 06-5, and cannot
currently estimate the impact of EITF No. 06-5 on its consolidated results of operations, cash flows or financial position.



17. Income Tax Expense

Although the outcome of tax audits is uncertain,
management believes that adequate provisions for income and other taxes have been made for potential liabilities resulting from such matters. As of September 30, 2006, Duke Energy Ohio has total provisions of approximately $22 million for
uncertain tax positions, as compared to approximately $28 million as of December 31, 2005, including interest. Management is not aware of any issues for open tax years that upon final resolution are expected to have a material adverse effect on
Duke Energy Ohios consolidated results of operations, cash flows or financial position.

The effective tax rate on income from continuing
operations for the three months ended September 30, 2006 was approximately 41.2% as compared to the effective tax rate of 29.7% for the same period in 2005. The effective tax rate on income from continuing operations for the six months ended
September 30, 2006 was approximately 40.4% as compared to the effective tax rate of 33.2% for the nine months ended September 30, 2005. The increase in the effective tax rate for the three and six months ended September 30, 2006 as
compared to the prior year primarily relates to a prior year release of certain deferred tax liabilities due to a June 2005 change in Ohio Tax Law to eliminate the Ohio income tax on corporations.



18. Severance

During the third quarter of 2006, Duke Energy Ohio accrued approximately $4 million related to voluntary severance as a result of union negotiations. Duke Energy Ohio does not anticipate any additional material severance
liabilities and remaining payments are expected to be made by the end of 2006. Below is a table showing the reconciliation of changes in the severance provision from April 1, 2006 to September 30, 2006:

|                         |  |              |  |                 |  |                              
|------------------------ |  | ------------ |  | --------------- |  | -----------------------------
|Balance at April 1, 2006 |  | Provision(1) |  | Cash Reductions |  | Balance at September 30, 2006
|(in millions)           
|$                       |  | $4           |  | $(1)            |  | $3                           



|(1) | The $4 million recorded to severance during the six months ended September 30, 2006 was charged to operating expenses.
|--- | ----------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

PART I

DUKE ENERGY OHIO, INC.

Notes To Consolidated Financial Statements(Continued)



19. Subsequent Events

For information on
subsequent events related to acquisitions and dispositions see Note 8, for discontinued operations see Note 10, for business segments see Note 11, for risk management instruments see Note 12 and for regulatory matters see Note 13.



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##### Table of Contents

PART I

Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations

The following
discussion should be read in conjunction with the accompanying financial statements and related notes included elsewhere in this report and the Form 10-K for the year ended December 31, 2005 (2005 10-K). Duke Energy Ohio, Inc. (Duke Energy
Ohio) (formerly The Cincinnati Gas & Electric Company) has reclassified certain prior-year amounts in the financial statements to conform to current presentation (See Note 1 of the Consolidated Financial Statements for further details). The
following discussions of results are not necessarily indicative of the results to be expected in any future period.



CINERGY MERGER WITH DUKE ENERGY

On April 3, 2006, in accordance with their previously announced merger agreement,
Duke Energy Corporation (Old Duke Energy) and Cinergy Corp. (Cinergy) merged into wholly owned subsidiaries of Duke Energy Holding Corp. (Duke Energy HC), resulting in Duke Energy HC becoming the parent entity. In connection with the closing of the
merger transactions, Duke Energy HC changed its name to Duke Energy Corporation (New Duke Energy or Duke Energy) and Old Duke Energy converted into a limited liability company named Duke Power Company LLC (subsequently renamed Duke Energy Carolinas,
LLC). As a result of the merger transactions, each outstanding share of Cinergy common stock was converted into 1.56 shares of Duke Energy common stock which resulted in the issuance of approximately 313 million shares of Duke Energy common stock.
Both Old Duke Energy and New Duke Energy are referred to as Duke Energy herein.

The merger has been accounted for under the purchase method of
accounting with Duke Energy treated as the acquirer for accounting purposes. As a result, the assets and liabilities of Cinergy were recorded at their respective fair values as of April 3, 2006. Except for an adjustment related to pension and
other postretirement benefit obligations, as mandated by Statement of Financial Accounting Standards (SFAS) No. 87, Employers Accounting for Pensions and SFAS No. 106, Employers Accounting for
Postretirement Benefits Other Than Pensions, the accompanying consolidated financial statements do not reflect any pro forma adjustments related to Duke Energy Ohios regulated operations that are accounted for pursuant to SFAS
No. 71, Accounting for the Effects of Certain Types of Regulation (SFAS No. 71), which are comprised of Duke Energy Ohios regulated transmission and distribution, and Duke Energy Kentucky, Inc. (formerly The Union
Light, Heat and Power Company). Under the rate setting and recovery provisions currently in place for these regulated operations which provide revenues derived from cost, the fair values of the individual tangible and intangible assets and
liabilities are considered to approximate their carrying values.

The fair values of the assets acquired and liabilities assumed are preliminary and
are subject to change as valuation analyses are finalized and remaining information on the fair values is received. However, Duke Energy Ohio does not currently anticipate any such changes to have a material impact on their consolidated results of
operations, cash flows, or financial position.

As discussed above, in connection with the merger, Duke Energy issued 1.56 shares of Duke Energy
common stock for each outstanding share of Cinergy common stock, which resulted in the issuance of approximately 313 million shares of Duke Energy common stock. Based on the market price of Duke Energy common stock during the period, including
the two trading days before through the two trading days after May 9, 2005, the date Duke Energy and Cinergy announced the merger, the transaction is valued at approximately $9.1 billion and has resulted in incremental goodwill to Duke Energy
Ohio of approximately $2.2 billion. The amount of goodwill results from significant strategic and financial benefits of the merger including:

| |  |  | increased financial strength and flexibility;
| | - |  | ---------------------------------------------

| |  |  | stronger utility business platform;
| | - |  | -----------------------------------

| |  |  | greater scale and fuel diversity, as well as improved operational efficiencies for the merchant generation business;
| | - |  | --------------------------------------------------------------------------------------------------------------------

| |  |  | broadened electric distribution platform;
| | - |  | -----------------------------------------

| |  |  | improved reliability and customer service through the sharing of best practices;
| | - |  | --------------------------------------------------------------------------------

| |  |  | increased scale and scope of the electric and gas businesses with stand-alone strength;
| | - |  | ---------------------------------------------------------------------------------------

| |  |  | complementary positions in the Midwestern United States (Midwest);
| | - |  | ------------------------------------------------------------------

| |  |  | greater customer diversity;
| | - |  | ---------------------------

| |  |  | combined expertise; and
| | - |  | -----------------------

| |  |  | significant cost savings synergies.
| | - |  | -----------------------------------

As discussed in Note 1 of the
Consolidated Financial Statements, purchase accounting impacts, including goodwill recognition, have been pushed down to Duke Energy Ohio, resulting in the assets and liabilities of Duke Energy Ohio being recorded at their respective
fair values as of April 3, 2006.



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##### Table of Contents

PART 1



RESULTS OF OPERATIONS



Basis of Presentation

The Results of Operations discussion for Duke Energy Ohio is presented in a reduced disclosure format in accordance with General Instruction
H(2)(a) of Form 10-Q.



Results of Operations and Variances



Summary of Results for the six months ended September 30, 2006 (in millions)



|                                                       |  |                                |       |   |  |  |                     |   |                    |  |   |     |  
|------------------------------------------------------ |  | ------------------------------ | ----- | - |  |  | ------------------- | - | ------------------ |  | - | --- | -
|                                                       |  | Six Months Ended September 30, |      
|                                                       |  | Successor(1)2006               |       |   |  |  | Predecessor(1) 2005 |   | Increase(Decrease) | 
|Operating revenues                                     |  | $                              | 1,472 |   |  |  |                     | $ | 1,140              |  | $ | 332 |  
|Operating expenses                                     |  |                                | 1,327 |   |  |  |                     |   | 1,046              |  |   | 281 |  
|(Losses) Gains on Sales of Other Assets and Other, net |  |                                | (14   | ) |  |  |                     |   | 72                 |  |   | (86 | )
|                                                       |  |                                |       |   |  |  |                     |   |                    |  |   |     |  
|Operating income                                       |  |                                | 131   |   |  |  |                     |   | 166                |  |   | (35 | )
|Other income and expenses, net                         |  |                                | 13    |   |  |  |                     |   | 8                  |  |   | 5   |  
|Interest expense                                       |  |                                | 54    |   |  |  |                     |   | 50                 |  |   | 4   |  
|Income tax expense from continuing operations          |  |                                | 36    |   |  |  |                     |   | 32                 |  |   | 4   |  
|(Loss) income from discontinued operations, net of tax |  |                                | (1    | ) |  |  |                     |   | 24                 |  |   | (25 | )
|                                                       |  |                                |       |   |  |  |                     |   |                    |  |   |     |  
|Net income                                             |  | $                              | 53    |   |  |  |                     | $ | 116                |  | $ | (63 | )
|                                                       |  |                                |       |   |  |  |                     |   |                    |  |   |     |  



|(1) | See Note 1 of the Consolidated Financial Statements for additional information on Predecessor and Successor reporting.
|--- | ----------------------------------------------------------------------------------------------------------------------



Net Income

The 54 percent decrease in Duke Energy Ohios Net Income was primarily due to the following factors:



Operating Revenues

Increased Operating Revenues were primarily due
to the following factors:

| |  |  | An increase in the retail distribution base rates implemented in January 2006;
| | - |  | ------------------------------------------------------------------------------

| |  |  | The revenues generated by Duke Energys five Midwest generating plants contributed in the second quarter of 2006;
| | - |  | -----------------------------------------------------------------------------------------------------------------

| |  |  | Increased retail operating revenues from the Market Based Standard Service Offer (MBSSO), primarily due to its implementation for residential customers in Ohio beginning in January 2006; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | Mark to Market (MTM) gains on generation power hedges in 2006 compared to losses in 2005.
| | - |  | -----------------------------------------------------------------------------------------

These increases were partially offset by temporary rate reductions due to regulatory approvals of the Duke Energy merger and milder weather.



Operating Expenses

Increased
Operating Expenses were primarily due to the following factors:

| |  |  | Purchase accounting amortization recorded for the six months ended September 30, 2006;
| | - |  | --------------------------------------------------------------------------------------

| |  |  | Operating expenses related to Duke Energys five Midwest generating plants contributed in the second quarter of 2006;
| | - |  | ---------------------------------------------------------------------------------------------------------------------

| |  |  | Higher fuel costs due to higher average coal prices per ton;
| | - |  | ------------------------------------------------------------

| |  |  | MTM losses on coal hedges in 2006 compared to gains in 2005; and
| | - |  | ----------------------------------------------------------------

| |  |  | Costs incurred as a result of the Duke Energy merger, including integration costs and corporate allocations.
| | - |  | ------------------------------------------------------------------------------------------------------------



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PART 1



(Losses) Gains on Sales of Other Assets and Other, net

The
decrease in (Losses) Gains on Sales of Other Assets and Other, net is due to the decrease in Emission allowance sales activity due to less volatility in power and coal market prices. The decrease is also due to the impacts of purchase accounting
resulting in emission allowances being reflected on the balance sheet at their estimated fair values as of April 1, 2006. Prior to the impacts of purchase accounting, these emission allowances had a lower carrying value, resulting in larger
gains on sales.



Income Tax Expense from Continuing Operations

The increase in Income Tax Expense from Continuing Operations was primarily due to an increase in the effective tax rate for the six months ended
September 30, 2006 as compared to the prior year due to a prior year release of certain deferred tax liabilities due to a June 2005 change in Ohio Tax Law to eliminate the Ohio income tax on corporations.



(Loss) Income from Discontinued Operations, net of tax

The (Loss) Income from Discontinued Operations, net of tax, for 2006 and 2005 is primarily related to the marketing and trading operations, which were classified as
discontinued operations in connection with the June 2006 announcement to sell certain of Duke Energy Ohios trading contracts to Fortis. The lower results from (Loss) Income from Discontinued Operations, net of tax was primarily due to lower
trading activity during 2006 as compared to 2005.



Basis of Presentation



Results of Operations and Variances



Summary of Results for the three months ended March 31 (in millions)



|                                                       |  |                             |     |   |      |   |                    |  |   |     |  
|------------------------------------------------------ |  | --------------------------- | --- | - | ---- | - | ------------------ |  | - | --- | -
|                                                       |  | Three Months EndedMarch 31, |    
|                                                       |  | Predecessor(1)              |    
|                                                       |  | 2006                        |     |   | 2005 |   | Increase(Decrease) | 
|Operating revenues                                     |  | $                           | 963 |   |      | $ | 751                |  | $ | 212 |  
|Operating expenses                                     |  |                             | 781 |   |      |   | 649                |  |   | 132 |  
|Gains (Losses) on Sales of Other Assets and Other, net |  |                             | 26  |   |      |   | 31                 |  |   | (5  | )
|                                                       |  |                             |     |   |      |   |                    |  |   |     |  
|Operating income                                       |  |                             | 208 |   |      |   | 133                |  |   | 75  |  
|Other income and expenses, net                         |  |                             | 8   |   |      |   | 4                  |  |   | 4   |  
|Interest expense                                       |  |                             | 30  |   |      |   | 23                 |  |   | 7   |  
|Income tax expense from continuing operations          |  |                             | 68  |   |      |   | 47                 |  |   | 21  |  
|(Loss) Income from discontinued operations, net of tax |  |                             | (2  | ) |      |   | 18                 |  |   | (20 | )
|                                                       |  |                             |     |   |      |   |                    |  |   |     |  
|Net income                                             |  | $                           | 116 |   |      | $ | 85                 |  | $ | 31  |  
|                                                       |  |                             |     |   |      |   |                    |  |   |     |  

---

|(1) | See Note 1 of the Consolidated Financial Statements for additional information on Predecessor and Successor reporting.
|--- | ----------------------------------------------------------------------------------------------------------------------



Net Income

The 36 percent increase in net income was primarily due to the following factors:



Operating Revenues

Increased operating revenues were primarily due to the following factors:

| |  |  | An increase in retail operating revenues from the MBSSO, primarily due to its implementation for residential customers in Ohio beginning in January 2006;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | Increased revenues from non-residential customers related to the timing of collection of fuel, purchased power, and emission allowance costs;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | MTM gains on generation power hedges;
| | - |  | -------------------------------------



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##### Table of Contents

PART 1



| |  |  | An increase in the average price received per megawatt hour (MWh), primarily due to the return of certain retail customers to full electric service; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------

| |  |  | An increase in retail distribution base rates implemented in January 2006.
| | - |  | --------------------------------------------------------------------------

Partially offsetting these increases was a decrease due to milder weather in the first quarter of 2006, as compared to 2005.

Operating
Expenses

Increased operating expenses were primarily due to the following factors:

| |  |  | MTM losses on generation fuel hedges; and
| | - |  | -----------------------------------------

| |  |  | An increase in operation, maintenance, and other expenses, including significant merger related costs in the first quarter of 2006.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------



Income Tax Expense from Continuing Operations

The increase in Income Tax Expense from Continuing Operations was primarily due to an increase in Income from Continuing Operations Before Income Taxes slightly
offset by a decrease in the effective tax rate for the three months ended March 31, 2006 as compared to the prior year due to a June 2005 change in Ohio Tax Law to eliminate the Ohio Income tax on corporations.



(Loss) Income from Discontinued Operations, net of tax

The (Loss) Income from Discontinued Operations, net of tax, for 2006 and 2005 is primarily related to the marketing and trading operations, which were classified as
discontinued operations in connection with the June 2006 announcement to sell certain of Duke Energy Ohios trading contracts to Fortis. The lower results from (Loss) Income from Discontinued Operations, net of tax was primarily due to lower
trading activity during 2006 as compared to 2005.



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##### Table of Contents

PART 1



Item 4. Controls and Procedures.



Evaluation of
Disclosure Controls and Procedures

Disclosure controls and procedures are controls and other procedures that are designed to ensure that
information required to be disclosed by Duke Energy Ohio in the reports it files or submits under Securities Exchange Act of 1934 (Exchange Act) is recorded, processed, summarized, and reported within the time periods specified by the Securities and
Exchange Commissions (SEC) rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to provide reasonable assurance that information required to be disclosed by Duke Energy Ohio in the
reports it files or submits under the Exchange Act is accumulated and communicated to management, including the chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure.

Under the supervision and with the participation of management, including the chief executive officer and chief financial officer, Duke Energy Ohio has evaluated
the effectiveness of its disclosure controls and procedures (as such term is defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act) as of September 30, 2006, and, based upon this evaluation, the chief executive officer and chief
financial officer have concluded that these controls and procedures are effective in providing reasonable assurance that information requiring disclosure is recorded, processed, summarized, and reported within the timeframe specified by the
SECs rules and forms.



Changes in Internal Control over Financial Reporting

Under the supervision and with the participation of management, including the chief executive officer and chief financial officer, Duke Energy
Ohio has evaluated changes in internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the fiscal quarter ended September 30, 2006 and, other than the Duke
Energy and Cinergy merger discussed below, found no change that has materially affected, or is reasonably likely to materially affect, internal control over financial reporting.

On April 3, 2006, the previously announced merger between Duke Energy and Cinergy was consummated. Duke Energy is currently in the process of integrating
Cinergys operations and will be conducting control reviews pursuant to Section 404 of the Sarbanes-Oxley Act of 2002. See Notes 1 and 2 of the Consolidated Financial Statements for additional information relating to the merger.



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##### Table of Contents

PART II. OTHER INFORMATION



I
tem 1. Legal Proceedings

For information regarding legal proceedings that became reportable events or in which
there were material developments in the third quarter of 2006, see Note 13 to the Consolidated Financial Statements, Regulatory Matters and Note 14 to the Consolidated Financial Statements, Commitments and Contingencies.



Item 1A. Risk Factors

In addition to the other information set forth in this report, careful consideration should be
given to the factors discussed in Part I, Item 1A. Risk Factors in Duke Energy Ohios Annual Report on Form 10-K for the year ended December 31, 2005, which could materially affect Duke Energy Ohios financial condition or
future results. The risks described in Duke Energy Ohios Annual Report on Form 10-K are not the only risks facing Duke Energy Ohio. Additional risks and uncertainties not currently known to Duke Energy Ohio or that Duke Energy Ohio currently
deems to be immaterial also may adversely affect Duke Energy Ohios financial condition and/or results of operations.



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##### Table of Contents

PART II



Item 6. Exhibits

The documents listed below are being filed, or have previously been filed, on behalf of Duke
Energy Ohio are incorporated herein by reference from the documents indicated and made a part hereof. Exhibits not identified as previously filed are filed herewith:



|                   |  |                                                                                                                                                                                      
|------------------ |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitDesignation |  | Nature of Exhibit                                                                                                                                                                    
|3.1                |  | Amended Articles of Incorporation, effective September 19, 2006.                                                                                                                     
|                   | 
|31.a               |  | Certification by James L. Turner pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.  
|                   | 
|31.b               |  | Certification by Myron L. Caldwell pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
|                   | 
|32.a               |  | Certification by James L. Turner pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                           
|                   | 
|32.b               |  | Certification by Myron L. Caldwell pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                         



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##### Table of Contents



SIGNATURES



Pursuant to the requirements
of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.



|                        |  |  |  |                                                                  
|----------------------- |  |  |  | -----------------------------------------------------------------
|                        |  |  |  | DUKE ENERGY OHIO, INC.                                           
|                        |  | 
|Date: November 17, 2006 |  |  |  | /s/    Myron L. Caldwell                                         
|                        |  |  |  | Myron L. Caldwell Group Vice
President andChief Financial Officer
|                        |  | 
|Date: November 17, 2006 |  |  |  | /s/    Dwight L. Jacobs                                          
|                        |  |  |  | Dwight L. Jacobs Vice
President and Controller                   



41