Table 3.26. Useful Thermal Output by Energy Source: Industrial Sector Combined Heat and Power, 2013 - 2023
(Billion Btus)

Period Coal Petroleum
Liquids		 Petroleum
Coke		 Natural
Gas		 Other
Fossil
Gas		 Renewable
Sources		 Other Total
Annual Totals
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
2022 116,212 13,837 10,375 537,793 115,764 555,335 9,245 1,358,561
2023 100,884 10,076 8,645 545,036 125,448 511,656 9,521 1,311,266
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 44,342 10,422 48,684 1,009 116,324
April 9,656 403 950 43,491 9,496 48,164 887 113,046
May 9,753 352 1,075 44,129 9,719 49,122 771 114,922
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
Year 2022
January 10,800 927 810 49,490 10,406 48,935 827 122,194
February 9,296 774 779 43,261 9,313 44,432 760 108,616
March 10,346 1,153 891 45,486 10,121 46,936 702 115,636
April 9,433 1,223 816 42,760 9,054 46,595 732 110,614
May 9,975 1,076 975 43,143 9,930 47,876 618 113,592
June 9,260 1,307 817 42,871 9,462 46,320 811 110,848
July 9,778 1,285 822 45,738 10,033 47,805 857 116,319
August 9,761 792 963 46,573 10,095 47,228 730 116,142
September 8,923 1,146 786 42,961 9,082 43,356 807 107,061
October 9,632 1,176 931 43,722 9,552 44,432 798 110,243
November 9,130 1,162 932 45,012 9,359 45,296 844 111,734
December 9,877 1,815 853 46,774 9,358 46,125 758 115,561
Year 2023
January 9,826 1,296 559 48,133 10,576 47,447 816 118,653
February 8,491 1,334 345 42,769 9,666 41,382 742 104,729
March 8,685 1,041 905 46,602 10,728 45,062 756 113,779
April 7,998 1,260 802 42,607 10,191 39,561 609 103,027
May 8,452 500 868 44,058 10,358 42,904 585 107,724
June 7,826 478 740 44,831 10,425 39,045 752 104,097
July 8,597 534 709 46,216 10,778 41,615 726 109,176
August 7,843 691 771 45,812 10,589 42,588 712 109,006
September 7,959 655 760 45,000 11,002 41,743 646 107,765
October 7,928 581 757 43,785 11,142 41,115 765 106,073
November 8,436 821 721 45,913 9,634 44,267 1,189 110,981
December 8,845 886 708 49,311 10,359 44,926 1,223 116,258

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 Fossil Gas.
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 Fossil Gas.
Petroleum Coke includes petroleum coke-derived synthesis gas. Prior to 2011, petroleum coke-derived synthesis gas was included in Other Fossil Gas.
Other Fossil Gas includes gaseous propane, blast furnace gas, other manufactured and waste gases derived from fossil fuels other than hydrogen. Prior to 2011, Other Fossil 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 hydrogen, non-biogenic municipal solid waste, batteries, 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 separating 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.