Exhibit 99(f)

SEMI-ANNUAL SERVICERS CERTIFICATE

ONCOR ELECTRIC DELIVERY TRANSITION BOND COMPANY LLC,

$789,777,000 Transition Bonds, Series 2004-1

Oncor Electric Delivery Company LLC, as Servicer.

Pursuant to Section 4.01(c)(ii) of the Series
2004-1 Transition Property Servicing Agreement dated as of June 7, 2004 (the Agreement) between Oncor Electric Delivery Company LLC, as Servicer and Oncor Electric Delivery Transition Bond Company LLC, as Issuer, the Servicer does
hereby certify as follows:

Capitalized terms used herein have the respective meanings as set forth in the Agreement. References herein to
certain sections and subsections are references to the respective sections of the Agreement.



|                    |  |                         
|------------------- |  | ------------------------
|Collection Periods: |  | May 2007 to October 2007
|Payment Date:       |  | November 15, 2007       
|Todays Date:       |  | November 7, 2007        



|      |  |                                                                                         |  |   |              
|----- |  | --------------------------------------------------------------------------------------- |  | - | -------------
|1.    |  | COLLECTIONS ALLOCABLE AND AGGREGATE AMOUNTS AVAILABLE FOR THE CURRENT PAYMENT DATE:     |  |   |              
|i.    |  | Remittances for the May 2007 Series 2004-1 Collection Period:                           |  | $ | 5,996,171.29 
|ii.   |  | Remittances for the June 2007Series 2004-1 Collection Period:                           |  | $ | 7,061,389.68 
|iii.  |  | Remittances for the July 2007 Series 2004-1 Collection Period:                          |  | $ | 6,900,942.61 
|iv.   |  | Remittances for the August 2007 Series 2004-1 Collection Period:                        |  | $ | 7,268,578.09 
|v.    |  | Remittances for the September 2007 Series 2004-1 Collection Period:                     |  | $ | 8,288,729.19 
|vi.   |  | Remittances for the October 2007 Series 2004-1 Collection Period:                       |  | $ | 8,363,396.90 
|vii.  |  | Remittances for the  Series 2004-1 Collection Period (after , use 6 prior periods only) |  | $ |              
|viii. |  | Remittances for the  Series 2004-1 Collection Period (after , use 6 prior periods only) |  | $ |              
|ix.   |  | Remittances for the  Series 2004-1 Collection Period (after , use 6 prior periods only) |  | $ |              
|x.    |  | Remittances for the  Series 2004-1 Collection Period                                    |  | $ |              
|xi.   |  | Remittances for the  Series 2004-1 Collection Period                                    |  | $ |              
|xii.  |  | Investment Earnings on Series 2004-1 Collection Account:                                |  | $ | 0.00         
|xiii. |  | Investment Earnings on Series 2004-1 Capital Subaccount:                                |  | $ | 91,412.92    
|xiv.  |  | Investment Earnings on Series 2004-1 Overcollateralization Subaccount:                  |  | $ | 22,359.34    
|xv.   |  | Investment Earnings on Series 2004-1 Reserve Subaccount:                                |  | $ | 102,904.85   
|xvi.  |  | Investment Earnings on Series 2004-1 General Subaccount:                                |  | $ | 551,912.00   
|      |  |                                                                                         |  |   |              
|xvii. |  | Series 2004-1 General Subaccount Balance (sum of i through xvi above):                  |  | $ | 44,647,796.87
|      |  |                                                                                         |  |   |              



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---

|       |  |                                                                                                |  |   |              
|------ |  | ---------------------------------------------------------------------------------------------- |  | - | -------------
|xviii. |  | Series 2004-1 Reserve Subaccount Balance as of Prior Series 2004-1 Payment Date:               |  | $ | 4,604,748.43 
|xix.   |  | Series 2004-1 Overcollateralization Subaccount Balance as of Prior Series 2004-1 Payment Date: |  | $ | 987,222.00   
|xx.    |  | Series 2004-1 Capital Subaccount Balance as of Prior Series 2004-1 Payment Date:               |  | $ | 3,948,885.00 
|       |  |                                                                                                |  |   |              
|xxi.   |  | Series 2004-1 Collection Account Balance (sum of xvii through xx above)                        |  | $ | 54,188,652.30
|       |  |                                                                                                |  |   |              



|2. | OUTSTANDING AMOUNTS AS OF PRIOR SERIES 2004-1 PAYMENT DATE:
|-- | -----------------------------------------------------------



|     |  |                                                         |  |   |               
|---- |  | ------------------------------------------------------- |  | - | --------------
|i.   |  | Class A-1 Outstanding Amount                            |  | $ | 131,368,989.00
|ii.  |  | Class A-2 Outstanding Amount                            |  | $ | 221,000,000.00
|iii. |  | Class A-3 Outstanding Amount                            |  | $ | 289,777,000.00
|     |  |                                                         |  |   |               
|iv.  |  |                                                         |  |   |               
|v.   |  | Aggregate Outstanding Amount of All Series 2004-1 Bonds |  | $ | 642,145,989.00
|     |  |                                                         |  |   |               



|3. | REQUIRED FUNDING/PAYMENTS AS OF CURRENT PAYMENT DATE:
|-- | -----------------------------------------------------



|     |  |                             |  |              |              
|---- |  | --------------------------- |  | ------------ | -------------
|     |  | SERIES 2004-1 PRINCIPAL     |  | PRINCIPALDUE
|i.   |  | Class A-1                   |  | $            | 31,965,647.00
|ii.  |  | Class A-2                   |  | $            | 0.00         
|iii. |  | Class A-3                   |  | $            | 0.00         
|     |  |                             |  |              |              
|iv.  |  |                             |  |              |              
|v.   |  | For All Series 2004-1 Bonds |  | $            | 31,965,647.00
|     |  |                             |  |              |              



|      |  |                                                |  |                  |   |  |                           |  |                  |              |                 |   |              
|----- |  | ---------------------------------------------- |  | ---------------- | - |  | ------------------------- |  | ---------------- | ------------ | --------------- | - | -------------
|      |  | SERIES 2004-1                                  |  | BONDINTERESTRATE |   |  | DAYS ININTERESTPERIOD (1) |  | PRINCIPALBALANCE |              | INTERESTDUE    
|vi.   |  | Class A-1                                      |  | 3.52             | % |  | 180                       |  | $                | 131,368,989  |                 | $ | 2,312,094.21 
|vii.  |  | Class A-2                                      |  | 4.81             | % |  | 180                       |  | $                | 221,000,000  |                 | $ | 5,315,050.00 
|viii. |  | Class A-3                                      |  | 5.29             | % |  | 180                       |  | $                | 289,777,000  |                 | $ | 7,664,601.65 
|      |  |                                                |  |                  |   |  |                           |  |                  |              |                 |   |              
|ix.   |  |                                                |  |                  |   |  |                           |  |                  |              |                 |   |              
|x.    |  | For All Series 2004-1 Bonds                    |  |                  |   |  |                           |  | $                | 642,145,989  |                 | $ | 15,291,745.86
|      |  |                                                |  |                  |   |  |                           |  |                  |              |                 |   |              
|      |  |                                                |  |                  |  
|      |  |                                                |  |                  |   |  |                           |  | REQUIREDLEVEL    |              | FUNDINGREQUIRED
|xi.   |  | Series 2004-1 Overcollateralization Subaccount |  |                  |   |  |                           |  | $                | 1,151,759.00 |                 | $ | 164,537.00   
|xii.  |  | Series 2004-1 Capital Subaccount               |  |                  |   |  |                           |  | $                | 3,948,885.00 |                 | $ | 0.00         



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|(1) | On 30/360-day basis for initial payment date; otherwise use one-half of annual rate.
|--- | ------------------------------------------------------------------------------------



|4. | ALLOCATION OF REMITTANCES AS OF CURRENT PAYMENT DATE PURSUANT TO §8.02(d) OF INDENTURE:
|-- | ---------------------------------------------------------------------------------------



|              |  |                                                                                     |  |   |              
|------------- |  | ----------------------------------------------------------------------------------- |  | - | -------------
|i.            |  | Trustee Fees and Expenses (subject to cap - see 8.02(e)(i) of the Indenture):       |  | $ | 0.00         
|ii.           |  | Independent Manager Fees (subject to cap  see 8.02(e)(i) of the Indenture):        |  | $ | 0.00         
|iii.          |  | Series 2004-1 Servicing Fee:                                                        |  | $ | 122,444.25   
|iv.           |  | Operating Expenses (subject to cap - see 8.02(e)(iii) of the Indenture):            |  |   |              
|              |  | Trust Operating Expense:                                                            |  | $ | 0.00         
|              |  | Trust Accounting Expense:                                                           |  | $ | 0.00         
|              |  | Rating Agency Fees: (reimburse Servicer)                                            |  | $ | 10,000.00    
|              |  | Administration Fee:                                                                 |  | $ | 0.00         
|              |  | Audit Fee (reimburse Administrator  Sec 3 of Agrmt):                               |  | $ | 25,577.00    
|              |  |                                                                                     |  |   |              
|              |  | Total Fees and Expenses (i through iv):                                             |  | $ | 158,021.25   
|              |  |                                                                                     |  |   |              
|              |  |                                                                                    
|v.            |  | Semi-Annual Interest (including any past-due for prior period(s)                    |  |   |              
|              | 
|SERIES 2004-1 |  |                                                                                    
|1.            |  | Class A-1 Interest Payment                                                          |  | $ | 2,312,094.21 
|2.            |  | Class A-2 Interest Payment                                                          |  | $ | 5,315,050.00 
|3.            |  | Class A-3 Interest Payment                                                          |  | $ | 7,664,601.65 
|              |  |                                                                                    
|vi.           |  | Principal Due and Payable as a Result of Event of Default or on Final Maturity Date |  |   |              
|              | 
|SERIES 2004-1 |  |                                                                                    
|1.            |  | Class A-1 Principal Payment                                                         |  | $ | 0.00         
|2.            |  | Class A-2 Principal Payment                                                         |  | $ | 0.00         
|3.            |  | Class A-3 Principal Payment                                                         |  | $ | 0.00         
|              |  |                                                                                    
|vii.          |  | Semi-Annual Principal                                                               |  |   |              
|              | 
|SERIES 2004-1 |  |                                                                                    
|1.            |  | Class A-1 Principal Payment                                                         |  | $ | 31,965,647.00
|2.            |  | Class A-2 Principal Payment                                                         |  | $ | 0.00         
|3.            |  | Class A-3 Principal Payment                                                         |  | $ | 0.00         



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---

|4. | ALLOCATION OF REMITTANCES AS OF CURRENT PAYMENT DATE PURSUANT TO §8.02(d) OF INDENTURE (CONTINUED):
|-- | ---------------------------------------------------------------------------------------------------



|      |  |                                                                               |  |   |              
|----- |  | ----------------------------------------------------------------------------- |  | - | -------------
|viii. |  | Funding of Series 2004-1 Capital Subaccount (to required level)               |  | $ | 0.00         
|ix.   |  | Funding of Series 2004-1 Overcollateralization Subaccount (to required level) |  | $ | 164,537.00   
|x.    |  | Investment Earnings on Series 2004-1 Capital Subaccount Released to Issuer    |  | $ | 91,412.92    
|xi.   |  | Deposit to Series 2004-1 Reserve Subaccount                                   |  | $ | 0.00         
|xii.  |  | Released to Issuer upon Retirement of all Bonds                               |  | $ | 0.00         
|      |  |                                                                               |  |   |              
|xiii. |  | AGGREGATE REMITTANCES AS OF CURRENT PAYMENT DATE                              |  | $ | 47,671,364.03
|      |  |                                                                               |  |   |              



|5. | OUTSTANDING AMOUNT AND SERIES 2004-1 COLLECTION ACCOUNT BALANCE AS OF CURRENT PAYMENT DATE (AFTER GIVING EFFECT TO PAYMENTS TO BE MADE ON SUCH PAYMENT DATE):
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------



|              |  |                                                         |  |   |               
|------------- |  | ------------------------------------------------------- |  | - | --------------
|SERIES 2004-1 |  |                                                        
|i.            |  | Class A-1 Outstanding Amount                            |  | $ | 99,403,342.00 
|ii.           |  | Class A-2 Outstanding Amount                            |  | $ | 221,000,000.00
|iii.          |  | Class A-3 Outstanding Amount                            |  | $ | 289,777,000.00
|              |  |                                                         |  |   |               
|iv.           |  |                                                         |  |   |               
|v.            |  | AGGREGATE OUTSTANDING AMOUNT OF ALL SERIES 2004-1 BONDS |  | $ | 610,180,342.00
|              |  |                                                         |  |   |               
|vi.           |  | Series 2004-1 Reserve Subaccount Balance                |  | $ | 1,581,181.27  
|vii.          |  | Series 2004-1 Overcollateralization Subaccount Balance  |  | $ | 1,151,759.00  
|viii.         |  | Series 2004-1 Capital Subaccount Balance                |  | $ | 3,948,885.00  
|              |  |                                                         |  |   |               
|ix.           |  | AGGREGATE SERIES 2004-1 COLLECTION ACCOUNT BALANCE      |  | $ | 6,806,252.18  
|              |  |                                                         |  |   |               



|6. | SUBACCOUNT WITHDRAWALS AS OF CURRENT PAYMENT DATE (IF APPLICABLE, PURSUANT TO SECTION 8.02(e) OF INDENTURE):
|-- | ------------------------------------------------------------------------------------------------------------



|     |  |                                                |  |   |             
|---- |  | ---------------------------------------------- |  | - | ------------
|i.   |  | Series 2004-1 Reserve Subaccount               |  | $ | 3,023,567.16
|ii.  |  | Series 2004-1 Overcollateralization Subaccount |  | $ | 0.00        
|iii. |  | Series 2004-1 Capital Subaccount               |  | $ | 0.00        
|     |  |                                                |  |   |             
|iv.  |  | TOTAL WITHDRAWALS                              |  | $ | 3,023,567.16
|     |  |                                                |  |   |             



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|7. | SHORTFALLS IN INTEREST AND PRINCIPAL PAYMENTS AS OF CURRENT PAYMENT DATE:
|-- | -------------------------------------------------------------------------



|i. | Semi-annual Interest
|-- | --------------------



|              |  |                            |  |   |  
|------------- |  | -------------------------- |  | - | -
|SERIES 2004-1 |  |                           
|1.            |  | Class A-1 Interest Payment |  | $ | 0
|2.            |  | Class A-2 Interest Payment |  | $ | 0
|3.            |  | Class A-3 Interest Payment |  | $ | 0



|ii. | Semi-annual Principal
|--- | ---------------------



|              |  |                             |  |   |  
|------------- |  | --------------------------- |  | - | -
|SERIES 2004-1 |  |                            
|1.            |  | Class A-1 Principal Payment |  | $ | 0
|2.            |  | Class A-2 Principal Payment |  | $ | 0
|3.            |  | Class A-3 Principal Payment |  | $ | 0



|8. | SHORTFALLS IN REQUIRED SERIES 2004-1 SUBACCOUNT LEVELS AS OF CURRENT PAYMENT DATE:
|-- | ----------------------------------------------------------------------------------



|    |  |                                                |  |   |  
|--- |  | ---------------------------------------------- |  | - | -
|i.  |  | Series 2004-1 Overcollateralization Subaccount |  | $ | 0
|ii. |  | Series 2004-1 Capital Subaccount               |  | $ | 0

IN WITNESS HEREOF, the undersigned has duly
executed and delivered this Semi-Annual Servicers Certificate this 7thday of November, 2007.



ONCOR ELECTRIC DELIVERY COMPANY LLC, as
ServicerBy

/s/ John M. CaseyName:

John M. CaseyTitle:

Treasurer




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