Exhibit 99(b)

Energy Future Holdings Corp. Consolidated

Adjusted EBITDA Reconciliation



|                                                                                |  |                             |        |   |                             |   |        |  
|------------------------------------------------------------------------------- |  | --------------------------- | ------ | - | --------------------------- | - | ------ | -
|                                                                                |  | Year EndedDecember 31, 2007 |        |   | Year EndedDecember 31, 2006 |  
|Net income (loss)                                                               |  | $                           | (637   | ) |                             | $ | 2,552  |  
|Income tax expense (benefit)                                                    |  |                             | (364   | ) |                             |   | 1,263  |  
|Interest expense and related charges                                            |  |                             | 1,510  |   |                             |   | 830    |  
|Depreciation and amortization                                                   |  |                             | 1,049  |   |                             |   | 830    |  
|                                                                                |  |                             |        |   |                             |   |        |  
|EBITDA                                                                          |  | $                           | 1,558  |   |                             | $ | 5,475  |  
|                                                                                |  |                             |        |   |                             |   |        |  
|Oncor EBITDA                                                                    |  |                             | (1,291 | ) |                             |   | (1,276 | )
|Oncor dividends                                                                 |  |                             | 326    |   |                             |   | 340    |  
|Interest income                                                                 |  |                             | (80    | ) |                             |   | (46    | )
|Amortization of nuclear fuel                                                    |  |                             | 69     |   |                             |   | 65     |  
|Purchase accounting adjustments (a)                                             |  |                             | 138    |   |                             |   |       |  
|Impairment of assets and inventory write down (b)                               |  |                             | 757    |   |                             |   | 204    |  
|Unrealized net (gain) or loss resulting from hedging transactions               |  |                             | 2,278  |   |                             |   | (272   | )
|One-time customer appreciation bonus                                            |  |                             |       |   |                             |   | 165    |  
|Losses on sale of receivables                                                   |  |                             | 39     |   |                             |   | 38     |  
|Income from discontinued operations, net of tax effect                          |  |                             | (25    | ) |                             |   | (87    | )
|Noncash compensation expense (SFAS 123R) (c)                                    |  |                             | 22     |   |                             |   | 23     |  
|Severance expense (d)                                                           |  |                             |       |   |                             |   | 17     |  
|Equity losses of unconsolidated affiliate engaged in broadband over power lines |  |                             | 1      |   |                             |   | 14     |  
|Loss on early extinguishment of debt and energy services contract               |  |                             |       |   |                             |   | 1      |  
|Transition and business optimization costs (e)                                  |  |                             | 24     |   |                             |   |       |  
|Shareholder litigation                                                          |  |                             |       |   |                             |   | (15    | )
|Transaction and merger expenses (f)                                             |  |                             | 150    |   |                             |   | 28     |  
|Restructuring and other (g)                                                     |  |                             | (33    | ) |                             |   | (7     | )
|Expenses incurred to upgrade or expand a generation station (h)                 |  |                             | 5      |   |                             |   | 4      |  
|                                                                                |  |                             |        |   |                             |   |        |  
|Adjusted EBITDA per Incurrence Covenant                                         |  | $                           | 3,938  |   |                             | $ | 4,671  |  
|                                                                                |  |                             |        |   |                             |   |        |  
|Add back Oncor adjustments                                                      |  | $                           | 978    |   |                             | $ | 956    |  
|                                                                                |  |                             |        |   |                             |   |        |  
|Adjusted EBITDA per Restricted Payments Covenants                               |  | $                           | 4,916  |   |                             | $ | 5,627  |  
|                                                                                |  |                             |        |   |                             |   |        |  



|(a) | Purchase accounting adjustments include amortization of the intangible net asset value of retail and wholesale power sales agreements, emission credits, coal purchase contracts and
power purchase agreements and the stepped up value of nuclear fuel. Also includes certain credits not recognized in net income due to purchase accounting.
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|(b) | Impairment of assets includes charges in 2007 related to the canceled development of coal-fueled generation facilities and the 2006 impairment of natural gas-fueled generation
units.
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|(c) | Noncash compensation expenses exclude capitalized amounts.
|--- | ----------------------------------------------------------

|(d) | Severance expense includes amounts incurred related to outsourcing, restructuring and other amounts deemed to be in excess of normal recurring amounts.
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|(e) | Transition and business optimization costs include professional fees primarily for retail billing and customer care systems enhancements and incentive compensation.
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|(f) | Transaction and merger expenses include costs related to the Merger, abandoned strategic transactions and a terminated joint-venture. Also includes administrative costs related to
the canceled program to develop coal-fueled generation facilities, the Sponsor management fee and costs related to certain growth initiatives (primarily in 2006).
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|(g) | Restructuring and other includes credits related to impaired combustion turbine leases and other restructuring initiatives and nonrecurring activities.
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|(h) | Expenses incurred to upgrade or expand a generation station reflect noncapital outage costs.
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