Table 3.3.A. Net Generation by Energy Source: Independent Power Producers, 2001 - 2011
(Thousand Megawatthours)

Period Coal Petroleum
Liquids		 Petroleum
Coke		 Natural
Gas		 Other
Gas		 Nuclear Hydroelectric
Conventional		 Other
Renewable
Sources		 Hydroelectric
Pumped
Storage		 Other Total
Annual Totals
2001 322,681 35,532 4,709 290,506 586 234,619 15,945 40,593 -1,119 6,055 950,107
2002 395,943 22,241 8,368 378,044 1,763 272,684 18,189 44,466 -1,309 8,612 1,149,001
2003 452,433 35,818 7,949 380,337 2,404 304,904 21,890 46,060 -1,003 8,088 1,258,879
2004 443,547 33,574 7,410 427,510 3,194 312,846 19,518 48,636 -962 7,856 1,303,129
2005 507,199 37,096 9,664 445,625 3,767 345,690 21,486 51,708 -1,174 6,285 1,427,346
2006 498,316 10,396 8,409 452,329 4,223 361,877 24,390 59,345 -1,277 6,412 1,424,421
2007 507,406 13,645 6,942 500,967 3,901 378,869 19,109 65,751 -1,569 6,191 1,501,212
2008 502,442 8,021 6,737 482,182 3,154 381,952 23,451 85,776 -1,145 6,414 1,498,982
2009 419,031 6,306 4,288 491,839 2,962 381,579 24,308 101,860 -1,259 6,146 1,437,061
2010 449,709 5,117 3,497 508,774 2,915 382,126 22,351 120,956 -1,035 6,345 1,500,754
2011 416,783 3,655 3,431 511,447 2,911 374,906 26,117 141,954 -607 7,059 1,487,657
2009
January 43,505 2,242 327 35,753 214 34,648 1,922 8,266 -94 514 127,298
February 35,619 646 327 33,009 208 30,473 1,724 7,998 -105 464 110,362
March 33,514 624 354 35,290 232 32,385 2,208 9,259 -85 514 114,294
April 31,018 280 340 32,352 224 28,344 2,361 9,531 -100 514 104,864
May 31,064 281 338 35,944 226 31,599 2,522 8,422 -104 509 110,801
June 33,220 282 376 44,462 245 33,101 2,368 8,040 -87 523 122,529
July 37,046 341 430 55,916 279 33,873 2,245 7,741 -119 545 138,296
August 38,636 526 388 61,254 269 34,161 1,970 8,081 -150 552 145,687
September 30,063 245 405 49,763 288 31,749 1,346 7,180 -101 506 121,443
October 33,077 271 312 38,282 272 27,912 1,637 8,933 -114 490 111,073
November 31,641 247 326 32,331 247 29,725 1,809 9,015 -94 489 105,735
December 40,629 323 367 37,482 256 33,608 2,198 9,393 -105 527 124,678
2010
January 42,381 655 302 37,515 269 33,224 1,909 9,142 -138 507 125,766
February 37,605 266 314 33,676 241 30,300 1,669 7,669 -105 463 112,099
March 35,039 192 281 30,809 269 31,174 2,145 10,760 -93 502 111,080
April 29,824 228 283 32,403 268 26,666 2,087 11,509 -91 505 103,681
May 33,119 333 335 36,313 273 32,152 2,100 10,747 -84 533 115,821
June 39,461 459 364 48,503 259 32,466 2,050 10,402 -80 550 134,434
July 43,559 900 403 62,363 262 33,377 1,794 9,305 -83 558 152,439
August 43,105 568 265 65,487 244 33,553 1,554 9,193 -57 553 154,465
September 36,515 401 197 48,806 238 32,183 1,334 9,391 -68 540 129,537
October 33,051 267 248 39,263 169 31,525 1,843 9,914 -77 527 116,729
November 34,012 310 224 34,738 218 30,543 1,813 11,642 -70 545 113,975
December 42,038 540 280 38,897 205 34,962 2,054 11,282 -91 562 130,729
2011
January 42,852 588 349 37,417 242 35,000 1,785 10,446 74 530 129,282
February 33,475 252 298 33,924 206 30,670 1,782 11,904 58 503 113,071
March 31,255 229 393 32,750 251 31,461 2,544 12,260 -72 589 111,660
April 29,625 221 258 34,103 243 25,583 2,728 13,669 -63 584 106,952
May 31,525 242 259 36,802 235 28,511 2,950 13,346 -51 590 114,409
June 36,936 347 284 45,115 253 30,635 2,367 12,911 -76 621 129,393
July 42,051 554 358 62,024 261 33,901 1,993 9,969 -96 645 151,659
August 40,884 320 298 61,922 263 33,903 1,800 9,991 -94 614 149,901
September 34,521 246 261 46,908 251 32,210 1,965 9,121 -83 569 125,969
October 31,395 213 225 38,745 239 29,779 2,150 12,071 -84 582 115,317
November 30,220 204 207 37,730 224 30,367 1,801 13,840 -60 593 115,124
December 32,045 238 241 44,007 244 32,885 2,252 12,425 -59 639 124,919

Coal includes anthracite, bituminous, subbituminous, lignite, and waste coal; coal synfuel and refined coal; and beginning in 2011, coal-derived synthesis gas. Prior to 2011 coal-derived synthesis gas was included in Other Gases.
Petroleum Liquids includes distillate and residual fuel oils, jet fuel, kerosene, waste oil, and beginning in 2011, propane. Prior to 2011 propane was included in Other Gases.
Petroleum Coke includes petroleum coke-derived synthesis gas. Prior to 2011, petroleum coke-derived synthesis gas was included in Other Gases.
Other Gas includes blast furnace gas and other manufactured and waste gases derived from fossil fuels. Prior to 2011, Other Gas included propane and synthesis gases.
See the Technical Notes for fuel conversion factors.
Other Renewable Sources include wood, black liquor, other wood waste, biogenic municipal solid waste, landfill gas, sludge waste, agriculture byproducts, other biomass, geothermal, solar thermal, photovoltaic energy, and wind.
Other includes non-biogenic municipal solid waste, batteries, hydrogen, purchased steam, sulfur, tire-derived fuel, and other miscellaneous energy sources.
Notes: Beginning with 2001 data, non-biogenic municipal solid waste and tire-derived fuels are reclassified as non-renewable energy sources and included in Other. Biogenic municipal solid waste is included in Other Renewable Sources.
See Glossary for definitions. Values are final. See Technical Notes for a discussion of the sample design for the Form EIA-923 and predecessor forms.
Totals may not equal sum of components because of independent rounding. NM=Not meaningful due to large standard error. W=Withheld to avoid disclosure of individual company data. *=value less than half of smallest unit of measure.
Sources: U.S. Energy Information Administration, Form EIA-923, Power Plant Operations Report; U.S. Energy Information Administration, Form EIA-906, Power Plant Report; U.S. Energy Information Administration, Form EIA-920 Combined Heat and Power Plant Report; and predecessor forms.
Beginning with 2008 data, the Form EIA-923, Power Plant Operations Report, replaced the following: Form EIA-906, Power Plant Report; Form EIA-920, Combined Heat and Power Plant Report;
Form EIA-423, Monthly Cost and Quality of Fuels for Electric Plants Report; and Federal Energy Regulatory Commission, FERC Form 423, Monthly Report of Cost and Quality of Fuels for Electric Plants.