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SAS Output
Table 3.23. Useful Thermal Output by Energy Source: Total Combined Heat and Power (All Sectors), 2015 - 2025
(Billion Btus)

Period Coal Petroleum
Liquids
Petroleum
Coke
Natural
Gas
Other
Fossil
Gas
Renewable
Sources
Other Total
Annual Totals
2015 211,030 11,796 21,748 591,749 98,910 626,887 19,729 1,581,849
2016 220,162 8,607 20,122 785,413 148,881 698,858 25,342 1,907,384
2017 193,164 7,922 17,322 789,485 151,579 674,248 23,685 1,857,405
2018 182,373 9,878 16,581 813,127 172,677 663,644 23,169 1,881,448
2019 162,108 7,992 14,278 802,153 142,229 643,548 22,429 1,794,736
2020 139,423 6,463 12,359 835,666 135,048 602,034 20,901 1,751,893
2021 149,948 7,603 12,390 818,647 135,509 609,495 19,596 1,753,188
2022 146,782 16,516 11,793 805,556 133,148 587,576 18,475 1,719,846
2023 121,382 12,155 9,979 810,007 143,075 541,688 19,090 1,657,377
2024 114,656 8,211 10,262 835,189 146,260 532,926 18,733 1,666,236
2025 112,126 8,035 10,387 809,159 139,148 511,016 16,347 1,606,219
Year 2023
January 12,058 1,558 685 70,919 11,903 50,312 1,575 149,009
February 10,343 1,551 465 64,348 10,823 44,130 1,477 133,137
March 10,805 1,196 1,037 69,034 12,139 48,554 1,525 144,290
April 9,472 1,383 913 62,551 11,606 42,243 1,403 129,571
May 9,975 625 975 63,680 11,946 45,258 1,448 133,906
June 9,422 611 839 66,229 11,959 41,360 1,535 131,955
July 10,386 659 817 70,460 12,273 43,700 1,556 139,852
August 9,582 802 884 69,535 12,304 44,606 1,572 139,284
September 9,534 779 871 66,880 12,504 43,397 1,381 135,347
October 9,351 739 848 65,086 12,537 43,637 1,383 133,581
November 9,933 981 809 68,719 11,043 46,833 2,065 140,383
December 10,522 1,271 837 72,566 12,038 47,659 2,169 147,062
Year 2024
January 11,761 1,164 997 77,746 12,817 46,520 1,718 152,722
February 9,653 584 795 68,086 11,908 44,034 1,577 136,636
March 10,546 566 775 69,222 12,500 45,611 1,614 140,834
April 8,659 814 779 63,287 11,798 44,450 1,695 131,481
May 8,677 604 867 65,800 12,713 43,372 1,279 133,312
June 8,626 626 879 67,413 12,338 42,263 1,435 133,580
July 9,595 757 954 72,773 12,724 43,392 2,045 142,240
August 9,225 523 899 73,417 12,805 43,863 1,560 142,293
September 8,914 412 822 68,490 11,558 44,213 1,270 135,679
October 9,053 564 777 66,940 11,698 41,692 1,367 132,092
November 9,620 550 788 68,215 11,196 45,580 1,458 137,406
December 10,326 1,048 932 73,801 12,205 47,935 1,713 147,960
Year 2025
January 11,238 1,699 828 76,735 12,127 45,799 1,539 149,964
February 9,807 1,793 793 66,292 11,396 42,256 1,400 133,736
March 10,056 568 837 67,395 11,861 45,149 1,534 137,400
April 9,054 470 774 61,778 11,337 40,679 1,325 125,417
May 8,046 401 882 64,209 11,490 40,223 1,121 126,371
June 8,746 468 972 65,254 11,532 41,534 1,272 129,779
July 9,552 440 926 70,272 12,092 43,845 1,350 138,478
August 9,180 466 802 69,923 11,247 43,189 1,260 136,067
September 8,904 314 884 66,022 11,037 40,871 1,264 129,297
October 8,679 426 894 64,819 11,476 42,702 1,351 130,346
November 9,035 348 836 65,356 11,798 41,545 1,386 130,303
December 9,829 642 961 71,104 11,756 43,226 1,543 139,061

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 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.

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