Table 3.26. Useful Thermal Output by Energy Source: Industrial Sector Combined Heat and Power, 2011 - 2021
(Billion Btus)

Period Coal Petroleum
Liquids		 Petroleum
Coke		 Natural
Gas		 Other
Gas		 Renewable
Sources		 Other Total
Annual Totals
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 15,721 503,614 133,781 631,768 11,112 1,454,066
2018 142,671 7,535 15,281 521,936 153,985 622,699 11,118 1,475,224
2019 127,411 5,787 13,012 523,919 122,544 607,138 11,535 1,411,347
2020 114,031 5,078 10,863 548,938 117,730 568,537 10,702 1,375,879
2021 120,335 5,658 10,933 547,717 118,578 578,150 11,208 1,392,579
Year 2019
January 13,124 1,129 1,151 46,960 10,428 54,504 990 128,286
February 11,791 540 1,065 42,487 9,382 49,408 950 115,622
March 11,431 434 1,148 44,198 10,513 51,928 1,018 120,672
April 10,724 421 1,118 40,351 10,317 48,442 970 112,343
May 10,189 342 1,143 42,727 10,016 49,351 731 114,500
June 9,849 330 1,137 42,011 9,886 48,749 919 112,879
July 9,400 285 1,097 44,343 10,848 51,142 955 118,071
August 9,396 329 1,053 44,741 10,450 51,506 1,019 118,495
September 9,268 340 1,185 42,651 10,133 48,088 933 112,599
October 10,273 385 1,026 43,037 10,045 50,520 972 116,257
November 10,745 812 836 44,067 10,012 50,820 1,082 118,376
December 11,220 440 1,052 46,346 10,514 52,680 996 123,248
Year 2020
January 11,613 410 1,049 53,564 11,011 52,304 895 130,845
February 10,446 564 625 48,560 10,569 48,816 952 120,532
March 9,803 359 500 48,935 10,854 49,812 849 121,112
April 8,708 848 351 46,461 8,850 47,362 897 113,477
May 8,527 257 861 41,960 9,483 47,446 821 109,355
June 8,206 347 1,066 41,985 9,467 44,209 817 106,097
July 9,042 317 1,101 45,718 9,879 46,032 829 112,918
August 8,776 322 1,115 44,711 9,846 45,313 878 110,960
September 8,672 342 1,038 41,420 8,687 43,924 932 105,016
October 10,036 384 1,035 44,075 9,906 46,724 899 113,060
November 9,440 428 981 43,044 9,387 46,851 923 111,055
December 10,763 502 1,140 48,503 9,792 49,744 1,010 121,453
Year 2021
January 10,838 722 1,058 50,096 10,534 49,825 996 124,069
February 10,131 722 996 41,711 8,967 44,032 927 107,485
March 10,322 506 1,038 44,341 10,422 48,684 1,009 116,323
April 9,656 403 950 43,491 9,496 48,164 887 113,046
May 9,753 352 1,075 44,129 9,719 49,122 771 114,921
June 9,594 344 831 45,796 9,665 46,541 929 113,701
July 10,240 360 880 48,293 9,939 49,214 936 119,864
August 9,572 421 753 46,961 10,185 49,142 896 117,930
September 9,878 412 888 43,708 9,801 47,222 928 112,837
October 9,706 508 849 44,942 9,454 46,934 969 113,361
November 10,558 442 804 45,894 10,101 47,494 932 116,225
December 10,086 467 810 48,355 10,295 51,775 1,027 122,816

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.