Table 3.26. Useful Thermal Output by Energy Source: Industrial Sector Combined Heat and Power, 2007 - 2017
(Billion Btus)

Period Coal Petroleum
Liquids
Petroleum
Coke
Natural
Gas
Other
Gas
Renewable
Sources
Other Total
Annual Totals
2007 265,948 43,948 23,290 321,648 95,840 625,413 38,380 1,414,466
2008 255,032 22,253 16,733 284,980 88,571 584,216 12,821 1,264,606
2009 223,485 26,155 18,708 296,225 79,726 520,898 22,471 1,187,669
2010 242,762 14,366 20,124 307,931 71,719 555,804 18,382 1,231,088
2011 233,767 10,059 20,209 319,590 83,167 562,838 19,035 1,248,666
2012 212,520 7,524 22,944 328,729 92,199 556,174 12,599 1,232,689
2013 210,795 7,196 24,009 338,041 93,416 588,165 11,512 1,273,134
2014 199,512 6,120 22,167 334,901 97,137 596,087 10,600 1,266,524
2015 180,501 5,965 20,203 384,369 91,749 598,890 8,899 1,290,576
2016 173,589 6,792 18,692 478,068 131,481 655,831 11,904 1,476,358
2017 151,780 6,289 15,721 503,723 133,781 660,876 11,112 1,483,283
Year 2015
January 17,972 653 1,828 31,802 8,566 53,548 758 115,127
February 16,437 959 1,768 29,513 7,267 47,456 673 104,072
March 16,153 545 1,875 32,754 8,017 49,592 719 109,654
April 14,389 481 1,875 30,456 7,740 49,593 726 105,260
May 14,575 478 1,768 29,966 7,317 50,534 743 105,380
June 14,150 446 1,652 30,980 7,747 48,965 765 104,706
July 15,399 413 1,426 33,688 8,122 50,706 784 110,539
August 14,589 358 1,502 34,315 7,963 50,745 770 110,242
September 14,206 380 1,738 31,512 8,196 47,924 756 104,711
October 13,390 455 1,511 32,884 6,985 48,333 713 104,270
November 14,508 392 1,858 32,532 6,465 49,611 723 106,089
December 14,733 406 1,403 33,967 7,365 51,883 769 110,525
Year 2016
January 17,018 628 1,281 41,752 10,722 57,036 1,079 129,515
February 15,407 917 1,596 37,987 9,834 53,440 1,025 120,206
March 15,291 560 1,459 38,835 11,612 54,052 1,071 122,880
April 13,277 560 1,334 37,592 11,355 51,275 994 116,388
May 13,825 652 1,724 38,470 11,386 53,230 803 120,091
June 14,642 589 1,787 39,640 11,547 52,954 902 122,062
July 15,353 552 1,781 41,607 11,050 54,044 993 125,380
August 14,958 452 1,747 42,044 11,230 54,370 1,097 125,897
September 13,385 443 1,216 39,695 10,496 50,696 1,010 116,942
October 12,983 562 1,568 39,902 10,481 52,423 952 118,871
November 12,703 443 1,652 38,490 10,419 54,521 949 119,175
December 14,747 432 1,547 42,055 11,350 67,789 1,028 138,948
Year 2017
January 14,600 453 1,385 42,679 12,099 57,510 991 129,717
February 12,231 340 1,121 38,665 10,455 51,718 862 115,392
March 13,188 482 1,471 41,312 11,126 56,089 955 124,623
April 11,880 489 1,221 39,132 10,653 52,963 894 117,232
May 12,013 456 1,259 40,564 11,905 53,293 815 120,305
June 12,509 386 1,455 41,038 10,808 54,583 933 121,713
July 12,084 375 1,399 44,352 11,206 56,327 906 126,650
August 12,380 373 1,428 43,098 11,111 57,416 1,022 126,827
September 11,551 451 1,140 42,435 10,692 51,558 919 118,744
October 13,158 452 1,354 42,679 11,390 54,704 947 124,684
November 12,694 904 1,276 41,563 10,876 55,946 918 124,177
December 13,493 1,127 1,212 46,206 11,463 58,767 951 133,220

Coal includes anthracite, bituminous, subbituminous, lignite, and waste coal; synthetic coal 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.
Renewable Sources include wood, black liquor, other wood waste, biogenic municipal solid waste, landfill gas, sludge waste, agriculture byproducts, other biomass, geothermal, and solar thermal.
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.
Beginning with the collection of Form EIA-923 in January 2008, the methodology for separating the fuel used for electricity generation and useful thermal output from combined heat and power plants changed. The new methodology was retroactively applied to 2004-2007, as well as 2008-2015. Beginning with the 2016 Form EIA-923 data, the methodology for seperating the fuel used for electricity generation and useful thermal output from CHP plants was updated. This update will apply to the 2016 data and future data years. See the Technical Notes (Appendix C) for further information.
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.
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.