v2.3.0.11

Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2011
Segment Information [Abstract] |
Segment tables |
|  | Three Months Ended June 30, 2011 |
|  | West |  |  | Texas |  |  | North |  |  | Southeast |  |  | Consolidation and Elimination |  |  | Total |
Revenues from external customers |  | $ | 466 |  |  | $ | 646 |  |  | $ | 324 |  |  | $ | 197 |  |  | $ | — |  |  | $ | 1,633 |
Intersegment revenues |  |  | 1 |  |  |  | 5 |  |  |  | 5 |  |  |  | 40 |  |  |  | (51 | ) |  |  | — |
Total operating revenues |  | $ | 467 |  |  | $ | 651 |  |  | $ | 329 |  |  | $ | 237 |  |  | $ | (51 | ) |  | $ | 1,633 |
Commodity Margin |  | $ | 236 |  |  | $ | 128 |  |  | $ | 179 |  |  | $ | 59 |  |  | $ | — |  |  | $ | 602 |
Add: Mark-to-market commodity activity, net and other revenue(1) |  |  | 11 |  |  |  | 27 |  |  |  | — |  |  |  | — |  |  |  | (9 | ) |  |  | 29 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant operating expense |  |  | 116 |  |  |  | 63 |  |  |  | 47 |  |  |  | 41 |  |  |  | (6 | ) |  |  | 261 |
Depreciation and amortization expense |  |  | 42 |  |  |  | 35 |  |  |  | 33 |  |  |  | 22 |  |  |  | (1 | ) |  |  | 131 |
Sales, general and other administrative expense |  |  | 8 |  |  |  | 13 |  |  |  | 6 |  |  |  | 6 |  |  |  | 1 |  |  |  | 34 |
Other operating expenses(2) |  |  | 11 |  |  |  | 3 |  |  |  | 9 |  |  |  | 2 |  |  |  | (5 | ) |  |  | 20 |
Loss from unconsolidated investments in power plants |  |  | — |  |  |  | — |  |  |  | 2 |  |  |  | — |  |  |  | — |  |  |  | 2 |
Income (loss) from operations |  |  | 70 |  |  |  | 41 |  |  |  | 82 |  |  |  | (12 | ) |  |  | 2 |  |  |  | 183 |
Interest expense, net of interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 190 |
(Gain) loss on interest rate derivatives, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37 |
Debt extinguishment costs and other (income) expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 |
Loss before income taxes and discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (52 | )
Segment tables |
|  | Three Months Ended June 30, 2010 |
|  | West |  |  | Texas |  |  | North |  |  | Southeast |  |  | Consolidation and Elimination |  |  | Total |
Revenues from external customers |  | $ | 525 |  |  | $ | 552 |  |  | $ | 134 |  |  | $ | 219 |  |  | $ | — |  |  | $ | 1,430 |
Intersegment revenues |  |  | 1 |  |  |  | 6 |  |  |  | 1 |  |  |  | 21 |  |  |  | (29 | ) |  |  | — |
Total operating revenues |  | $ | 526 |  |  | $ | 558 |  |  | $ | 135 |  |  | $ | 240 |  |  | $ | (29 | ) |  | $ | 1,430 |
Commodity Margin |  | $ | 258 |  |  | $ | 128 |  |  | $ | 79 |  |  | $ | 68 |  |  | $ | — |  |  | $ | 533 |
Add: Mark-to-market commodity activity, net and other revenue(1) |  |  | 10 |  |  |  | (10 | ) |  |  | 3 |  |  |  | (9 | ) |  |  | (6 | ) |  |  | (12 | )
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant operating expense |  |  | 88 |  |  |  | 78 |  |  |  | 23 |  |  |  | 31 |  |  |  | (7 | ) |  |  | 213 |
Depreciation and amortization expense |  |  | 50 |  |  |  | 40 |  |  |  | 19 |  |  |  | 27 |  |  |  | (1 | ) |  |  | 135 |
Sales, general and other administrative expense |  |  | 11 |  |  |  | 16 |  |  |  | 22 |  |  |  | 2 |  |  |  | (1 | ) |  |  | 50 |
Other operating expenses(2) |  |  | 12 |  |  |  | (5 | ) |  |  | 7 |  |  |  | (1 | ) |  |  | 8 |  |  |  | 21 |
(Income) from unconsolidated investments in power plants |  |  | — |  |  |  | — |  |  |  | (6 | ) |  |  | — |  |  |  | — |  |  |  | (6 | )
Income (loss) from operations |  |  | 107 |  |  |  | (11 | ) |  |  | 17 |  |  |  | — |  |  |  | (5 | ) |  |  | 108 |
Interest expense, net of interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 220 |
(Gain) loss on interest rate derivatives, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8 | )
Debt extinguishment costs and other (income) expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 |
Loss before income taxes and discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (112 | )
Segment tables |
|  | Six Months Ended June 30, 2011 |
|  | West |  |  | Texas |  |  | North |  |  | Southeast |  |  | Consolidation and Elimination |  |  | Total |
Revenues from external customers |  | $ | 1,065 |  |  | $ | 1,096 |  |  | $ | 595 |  |  | $ | 376 |  |  | $ | — |  |  | $ | 3,132 |
Intersegment revenues |  |  | 4 |  |  |  | 10 |  |  |  | 13 |  |  |  | 85 |  |  |  | (112 | ) |  |  | — |
Total operating revenues |  | $ | 1,069 |  |  | $ | 1,106 |  |  | $ | 608 |  |  | $ | 461 |  |  | $ | (112 | ) |  | $ | 3,132 |
Commodity Margin |  | $ | 469 |  |  | $ | 195 |  |  | $ | 314 |  |  | $ | 113 |  |  | $ | — |  |  | $ | 1,091 |
Add: Mark-to-market commodity activity, net and other revenue(1) |  |  | 16 |  |  |  | (33 | ) |  |  | 4 |  |  |  | (4 | ) |  |  | (15 | ) |  |  | (32 | )
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant operating expense |  |  | 203 |  |  |  | 143 |  |  |  | 92 |  |  |  | 74 |  |  |  | (13 | ) |  |  | 499 |
Depreciation and amortization expense |  |  | 88 |  |  |  | 65 |  |  |  | 66 |  |  |  | 45 |  |  |  | (2 | ) |  |  | 262 |
Sales, general and other administrative expense |  |  | 19 |  |  |  | 23 |  |  |  | 12 |  |  |  | 11 |  |  |  | 1 |  |  |  | 66 |
Other operating expenses(2) |  |  | 19 |  |  |  | 3 |  |  |  | 16 |  |  |  | 3 |  |  |  | (3 | ) |  |  | 38 |
(Income) from unconsolidated investments in power plants |  |  | — |  |  |  | — |  |  |  | (7 | ) |  |  | — |  |  |  | — |  |  |  | (7 | )
Income (loss) from operations |  |  | 156 |  |  |  | (72 | ) |  |  | 139 |  |  |  | (24 | ) |  |  | 2 |  |  |  | 201 |
Interest expense, net of interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 378 |
(Gain) loss on interest rate derivatives, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 146 |
Debt extinguishment costs and other (income) expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108 |
Loss before income taxes and discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (431 | )
Segment tables |
|  | Six Months Ended June 30, 2010 |
|  | West |  |  | Texas |  |  | North |  |  | Southeast |  |  | Consolidation and Elimination |  |  | Total |
Revenues from external customers |  | $ | 1,190 |  |  | $ | 1,079 |  |  | $ | 257 |  |  | $ | 418 |  |  | $ | — |  |  | $ | 2,944 |
Intersegment revenues |  |  | 5 |  |  |  | 10 |  |  |  | 2 |  |  |  | 44 |  |  |  | (61 | ) |  |  | — |
Total operating revenues |  | $ | 1,195 |  |  | $ | 1,089 |  |  | $ | 259 |  |  | $ | 462 |  |  | $ | (61 | ) |  | $ | 2,944 |
Commodity Margin |  | $ | 471 |  |  | $ | 235 |  |  | $ | 131 |  |  | $ | 126 |  |  | $ | — |  |  | $ | 963 |
Add: Mark-to-market commodity activity, net and other revenue(1) |  |  | 18 |  |  |  | 86 |  |  |  | — |  |  |  | 13 |  |  |  | (14 | ) |  |  | 103 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant operating expense |  |  | 178 |  |  |  | 162 |  |  |  | 45 |  |  |  | 59 |  |  |  | (13 | ) |  |  | 431 |
Depreciation and amortization expense |  |  | 103 |  |  |  | 76 |  |  |  | 39 |  |  |  | 56 |  |  |  | (3 | ) |  |  | 271 |
Sales, general and other administrative expense |  |  | 26 |  |  |  | 16 |  |  |  | 25 |  |  |  | 6 |  |  |  | (1 | ) |  |  | 72 |
Other operating expenses(2) |  |  | 29 |  |  |  | 2 |  |  |  | 15 |  |  |  | 2 |  |  |  | (1 | ) |  |  | 47 |
(Income) from unconsolidated investments in power plants |  |  | — |  |  |  | — |  |  |  | (13 | ) |  |  | — |  |  |  | — |  |  |  | (13 | )
Income from operations |  |  | 153 |  |  |  | 65 |  |  |  | 20 |  |  |  | 16 |  |  |  | 4 |  |  |  | 258 |
Interest expense, net of interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 399 |
(Gain) loss on interest rate derivatives, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |
Debt extinguishment costs and other (income) expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 |
Loss before income taxes and discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (157 | )
_________
(1) | Mark-to-market commodity activity represents the unrealized portion of our mark-to-market activity, net, included in operating revenues and fuel and purchased energy expense on our Consolidated Condensed Statements of Operations.
(2) | Excludes $2 million and $5 million of RGGI compliance and other environmental costs for the three months ended June 30, 2011 and 2010, respectively, and $4 million and $5 million for the six months ended June 30, 2011 and 2010, respectively, which are included as a component of Commodity Margin.

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