U.S. Energy Information Administration logo
Skip to sub-navigation
‹ U.S. States

Illinois   Illinois Profile

State Profile and Energy Estimates

Changes to the State Energy Data System (SEDS) Notice: In October 2023, we updated the way we calculate primary energy consumption of electricity generation from noncombustible renewable energy sources (solar, wind, hydroelectric, and geothermal). Visit our Changes to 1960—2022 conversion factor for renewable energy page to learn more.

Table CT5. Commercial Sector Energy Consumption Estimates, 1960-2021, Montana

Table CT5. Commercial Sector Energy Consumption Estimates, 1960-2021, Montana






Year



Coal


Natural
Gas a
Petroleum
Hydro-
electric
Power e,f
Biomass





Geothermal f



Solar f,h



Electricity i





End
Use f,j



Electrical
System
Energy
Losses k






Total f,j
Distillate
Fuel Oil

HGL b

Kerosene
Motor
Gasoline c
Residual
Fuel Oil

Total d


Wood
and
Waste f,g
Thousand
Short Tons
Billion
Cubic Feet

Thousand Barrels
Million
Kilowatthours
Million
Kilowatthours
1960 12 12 297 107 466 135 2 1,007 NA – – – – NA 688 – – – – – –
1961 12 12 380 130 306 146 3 966 NA – – – – NA 740 – – – – – –
1962 12 12 380 119 262 121 4 886 NA – – – – NA 789 – – – – – –
1963 11 13 372 106 356 141 4 978 NA – – – – NA 833 – – – – – –
1964 11 13 354 139 656 127 3 1,279 NA – – – – NA 858 – – – – – –
1965 10 14 315 135 227 144 1 822 NA – – – – NA 925 – – – – – –
1966 10 14 324 160 79 123 1 689 NA – – – – NA 986 – – – – – –
1967 10 16 223 211 157 135 1 726 NA – – – – NA 1,039 – – – – – –
1968 8 14 284 226 111 133 1 755 NA – – – – NA 1,078 – – – – – –
1969 8 17 329 227 133 107 1 796 NA – – – – NA 1,111 – – – – – –
1970 5 19 283 188 94 220 1 786 NA – – – – NA 1,187 – – – – – –
1971 10 18 451 192 78 127 1 849 NA – – – – NA 1,258 – – – – – –
1972 7 19 496 232 77 168 1 973 NA – – – – NA 1,322 – – – – – –
1973 9 19 562 204 84 136 1 987 NA – – – – NA 1,371 – – – – – –
1974 8 17 616 217 64 125 2 1,024 NA – – – – NA 1,370 – – – – – –
1975 7 19 668 206 54 174 2 1,105 NA – – – – NA 1,645 – – – – – –
1976 6 18 734 210 41 163 3 1,151 NA – – – – NA 1,728 – – – – – –
1977 2 17 699 210 51 157 3 1,121 NA – – – – NA 1,814 – – – – – –
1978 12 18 746 270 47 167 4 1,233 NA – – – – NA 1,926 – – – – – –
1979 9 17 766 128 17 179 11 1,102 NA – – – – NA 2,061 – – – – – –
1980 11 14 346 175 0 92 7 620 NA – – – – NA 2,094 – – – – – –
1981 7 14 380 107 0 110 0 597 NA – – – – NA 2,202 – – – – – –
1982 7 16 183 156 0 127 5 471 NA – – – – NA 2,339 – – – – – –
1983 6 14 1,104 191 (s) 76 172 1,543 NA – – – – NA 2,499 – – – – – –
1984 5 14 935 91 (s) 61 105 1,192 NA – – – – NA 4,874 – – – – – –
1985 6 15 772 128 (s) 72 126 1,098 NA – – – – NA 4,245 – – – – – –
1986 17 13 373 136 7 76 37 629 NA – – – – NA 4,456 – – – – – –
1987 6 11 272 150 (s) 80 13 515 NA – – – – NA 2,979 – – – – – –
1988 7 12 181 151 (s) 76 9 417 NA – – – – NA 3,202 – – – – – –
1989 42 13 192 176 (s) 77 13 458 0 – – – – (s) 3,070 – – – – – –
1990 46 12 154 172 (s) 84 11 421 0 – – – – (s) 3,237 – – – – – –
1991 37 13 164 149 (s) 63 3 379 0 – – – – (s) 3,326 – – – – – –
1992 17 12 140 127 (s) 55 4 325 0 – – – – (s) 3,396 – – – – – –
1993 9 14 170 116 1 12 5 304 0 – – – – (s) 3,495 – – – – – –
1994 3 13 159 115 1 15 3 294 0 – – – – (s) 3,657 – – – – – –
1995 9 13 102 100 (s) 13 3 218 0 – – – – (s) 3,411 – – – – – –
1996 4 15 229 110 (s) 19 2 361 0 – – – – (s) 3,603 – – – – – –
1997 74 14 162 32 (s) 12 1 207 0 – – – – (s) 3,577 – – – – – –
1998 4 13 114 18 (s) 14 1 147 0 – – – – (s) 3,649 – – – – – –
1999 3 12 142 73 (s) 14 2 231 0 – – – – (s) 3,359 – – – – – –
2000 3 14 143 195 (s) 14 1 353 0 – – – – (s) 4,104 – – – – – –
2001 3 13 197 199 (s) 14 0 410 0 – – – – (s) 4,190 – – – – – –
2002 3 15 137 204 1 15 0 357 0 – – – – (s) 4,338 – – – – – –
2003 2 15 173 528 2 15 1 718 0 – – – – (s) 4,438 – – – – – –
2004 97 13 294 331 3 15 0 644 0 – – – – (s) 4,330 – – – – – –
2005 133 13 163 414 7 15 0 600 0 – – – – (s) 4,473 – – – – – –
2006 127 13 215 344 (s) 16 0 574 0 – – – – (s)R 4,686 – – – – – –
2007 2 13 175 316 (s) 15 0 506 0 – – – – 1 4,828 – – – – – –
2008 11 14 229 428 1 17 0 675 0 – – – – 1 4,826 – – – – – –
2009 10 24 145 183 0 15 32 376 0 – – – – 1 4,791 – – – – – –
2010 7 20 105 291 (s) 15 1 412 0 – – – – 1 4,789 – – – – – –
2011 9 22 123 303 (s) 15 4 445 0 – – – – 1 4,892 – – – – – –
2012 5 19 106 375 (s) 14 (s) 496 0 – – – – 2 4,918 – – – – – –
2013 2 21 104 309 (s) 15 1 430 0 – – – – 2 4,890 – – – – – –
2014 1 22 85 395 (s) 14 3 497 0 – – – – 2 4,903 – – – – – –
2015 2 20 53 387 (s) 148 0 588 0 – – – – 3 4,894 – – – – – –
2016 2 21 129 422 (s) 149 0 700 0 – – – – 3 4,832 – – – – – –
2017 2 23 116 359 (s) 150 0 625 0 – – – – 4 4,970 – – – – – –
2018 3 26 96 604 0 152 0 852 0 – – – – 6 4,921 – – – – – –
2019 2 28 87 434 (s) 153 0 674 0 – – – – 7 4,956 – – – – – –
2020 1 26 98 529 (s) 154 0 781 0 – – – – 10 4,702 – – – – – –
2021 1 25 98 597 (s) 156 0 851 0 – – – – 12 4,906 – – – – – –
Trillion Btu
1960 0.3 12.3 1.7 0.4 2.6 0.7 (s) 5.5 NA 0.1 NA NA 2.3 20.5 5.8 26.3
1961 0.2 12.6 2.2 0.5 1.7 0.8 (s) 5.2 NA 0.1 NA NA 2.5 20.7 6.1 26.9
1962 0.3 12.8 2.2 0.5 1.5 0.6 (s) 4.8 NA 0.1 NA NA 2.7 20.6 6.5 27.1
1963 0.2 12.6 2.2 0.4 2.0 0.7 (s) 5.4 NA 0.1 NA NA 2.8 21.1 6.8 27.9
1964 0.2 13.1 2.1 0.5 3.7 0.7 (s) 7.0 NA 0.1 NA NA 2.9 23.4 7.0 30.3
1965 0.2 14.1 1.8 0.5 1.3 0.8 (s) 4.4 NA 0.1 NA NA 3.2 22.0 7.5 29.5
1966 0.2 14.1 1.9 0.6 0.5 0.6 (s) 3.6 NA 0.1 NA NA 3.4 21.3 8.1 29.4
1967 0.2 15.5 1.3 0.8 0.9 0.7 (s) 3.7 NA 0.1 NA NA 3.5 23.0 8.5 31.5
1968 0.2 13.6 1.7 0.9 0.6 0.7 (s) 3.9 NA 0.1 NA NA 3.7 21.4 8.8 30.2
1969 0.2 16.6 1.9 0.9 0.8 0.6 (s) 4.1 NA 0.1 NA NA 3.8 24.7 9.0 33.7
1970 0.1 19.2 1.6 0.7 0.5 1.2 (s) 4.1 NA 0.1 NA NA 4.1 27.4 9.8 37.2
1971 0.2 18.7 2.6 0.7 0.4 0.7 (s) 4.5 NA (s) NA NA 4.3 27.7 10.4 38.1
1972 0.1 19.7 2.9 0.9 0.4 0.9 (s) 5.1 NA (s) NA NA 4.5 29.5 10.8 40.3
1973 0.2 19.7 3.3 0.8 0.5 0.7 (s) 5.3 NA (s) NA NA 4.7 29.8 11.1 40.9
1974 0.2 16.9 3.6 0.8 0.4 0.7 (s) 5.5 NA (s) NA NA 4.7 27.3 11.3 38.6
1975 0.2 19.0 3.9 0.8 0.3 0.9 (s) 5.9 NA 0.1 NA NA 5.6 30.8 13.5 44.2
1976 0.1 18.1 4.3 0.8 0.2 0.9 (s) 6.2 NA 0.1 NA NA 5.9 30.3 14.1 44.4
1977 (s) 16.8 4.1 0.8 0.3 0.8 (s) 6.0 NA 0.1 NA NA 6.2 29.1 14.8 43.9
1978 0.2 17.7 4.3 1.0 0.3 0.9 (s) 6.5 NA 0.1 NA NA 6.6 31.2 15.9 47.1
1979 0.2 17.2 4.5 0.5 0.1 0.9 0.1 6.1 NA 0.1 NA NA 7.0 30.5 16.8 47.3
1980 0.2 14.4 2.0 0.7 0.0 0.5 (s) 3.2 NA 0.1 NA NA 7.1 25.1 17.2 42.2
1981 0.1 13.8 2.2 0.4 0.0 0.6 0.0 3.2 NA 0.1 NA NA 7.5 24.7 17.6 42.3
1982 0.1 16.1 1.1 0.6 0.0 0.7 (s) 2.4 NA 0.1 NA NA 8.0 26.7 18.9 45.6
1983 0.1 13.6 6.4 0.7 (s) 0.4 1.1 8.6 NA 0.1 NA NA 8.5 31.0 20.1 51.1
1984 0.1 14.3 5.4 0.3 (s) 0.3 0.7 6.8 NA 0.1 NA NA 16.6 37.9 37.9 75.8
1985 0.1 14.8 4.5 0.5 (s) 0.4 0.8 6.2 NA 0.1 NA NA 14.5 35.7 33.2 68.8
1986 0.3 12.5 2.2 0.5 (s) 0.4 0.2 3.4 NA 0.1 NA NA 15.2 31.5 34.1 65.6
1987 0.1 11.2 1.6 0.6 (s) 0.4 0.1 2.7 NA 0.1 NA NA 10.2 24.2 22.5 46.7
1988 0.1 12.3 1.1 0.6 (s) 0.4 0.1 2.1 NA 0.1 NA NA 10.9 25.5 24.2 49.7
1989 0.8 13.4 1.1 0.7 (s) 0.4 0.1 2.3 0.0 0.1 0.1 (s) 10.5 27.2 24.2 51.4
1990 0.9 12.5 0.9 0.7 (s) 0.4 0.1 2.1 0.0 0.2 0.1 (s) 11.0 26.7 25.6 52.3
1991 0.7 13.2 1.0 0.6 (s) 0.3 (s) 1.9 0.0 0.2 0.1 (s) 11.3 27.4 26.2 53.6
1992 0.3 11.8 0.8 0.5 (s) 0.3 (s) 1.6 0.0 0.2 0.1 (s) 11.6 25.6 27.0 52.6
1993 0.2 14.1 1.0 0.4 (s) 0.1 (s) 1.5 0.0 0.2 0.1 (s) 11.9 28.1 28.2 56.3
1994 0.1 13.3 0.9 0.4 (s) 0.1 (s) 1.5 0.0 0.2 0.1 (s) 12.5 27.6 29.2 56.8
1995 0.2 13.9 0.6 0.4 (s) 0.1 (s) 1.1 0.0 0.2 0.1 (s) 11.6 27.1 28.1 55.2
1996 0.1 15.3 1.3 0.4 (s) 0.1 (s) 1.9 0.0 0.2 0.1 (s) 12.3 29.8 28.7 58.6
1997 1.3 14.3 0.9 0.1 (s) 0.1 (s) 1.1 0.0 0.3 0.1 (s) 12.2 29.4 27.8 57.2
1998 0.1 13.3 0.7 0.1 (s) 0.1 (s) 0.8 0.0 0.3 0.1 (s) 12.4 27.0 29.0 56.0
1999 (s) 12.4 0.8 0.3 (s) 0.1 (s) 1.2 0.0 0.3 0.1 (s) 11.5 25.5 26.2 51.7
2000 (s) 13.9 0.8 0.8 (s) 0.1 (s) 1.7 0.0 0.3 0.2 (s) 14.0 30.0 32.7 62.7
2001 (s) 13.5 1.1 0.8 (s) 0.1 0.0 2.0 0.0 0.2 0.2 (s) 14.3 30.2 32.8 63.0
2002 (s) 15.0 0.8 0.8 (s) 0.1 0.0 1.7 0.0 0.2 0.2 (s) 14.8 31.9 33.9 65.7
2003 (s) 15.5 1.0 2.0 (s) 0.1 (s) 3.1 0.0 0.2 0.2 (s) 15.1 34.1 35.5 69.6
2004 1.8 13.8 1.7 1.3 (s) 0.1 0.0 3.1 0.0 0.2 0.2 (s) 14.8 33.7 34.9 68.7
2005 2.4 13.7 0.9 1.6 (s) 0.1 0.0 2.7 0.0 1.0 0.2 (s) 15.3 35.1 35.4 70.5
2006 2.3 13.4 1.2 1.3 (s) 0.1 0.0 2.6 0.0 0.9 0.2 (s) 16.0 35.4 37.6 73.0
2007 (s) 13.4 1.0 1.2 (s) 0.1 0.0 2.3 0.0 1.0 0.1 (s) 16.5 33.3 [R ] 37.3 70.6
2008 0.3 14.6 1.3 1.6 (s) 0.1 0.0 3.1 0.0 1.0 0.1 (s) 16.5 35.5 37.4 72.9
2009 0.2 23.8 0.8 0.7 0.0 0.1 0.2 1.8 0.0 0.4 0.1 (s) 16.3 42.8 36.9 79.7
2010 0.2 20.7 0.6 1.1 (s) 0.1 (s) 1.8 0.0 0.4 0.1 (s) 16.3 39.6 35.8 75.4
2011 0.2 22.7 0.7 1.2 (s) 0.1 (s) 2.0 0.0 0.4 0.1 (s) 16.7 42.2 36.0 78.2
2012 0.1 19.7 0.6 1.4 (s) 0.1 (s) 2.1 0.0 0.4 0.1 (s) 16.8 39.2 35.9 75.1
2013 (s) 21.7 0.6 1.2 (s) 0.1 (s) 1.9 0.0 0.4 0.1 (s) 16.7 40.9 36.0 76.9
2014 (s) 22.1 0.5 1.5 (s) 0.1 (s) 2.1 0.0 0.5 0.1 (s) 16.7 41.6 36.7 78.3
2015 0.1 20.1 0.3 1.5 (s) 0.7 0.0 2.5 0.0 1.6 0.1 (s) 16.7 41.2 35.3 76.5
2016 (s) 22.0 0.7 1.6 (s) 0.8 0.0 3.1 0.0 2.0 0.1 (s) 16.5 43.8 34.5 78.3
2017 (s) 24.3 0.7 1.4 (s) 0.8 0.0 2.8 0.0 2.0 0.1 (s) 17.0 46.3 34.9 81.2
2018 0.1 27.4 0.6 2.3 0.0 0.8 0.0 3.6 0.0 2.2 0.1 0.1 16.8 50.3 35.1 85.5 [R ]
2019 (s) 29.2 0.5 1.7 (s) 0.8 0.0 2.9 0.0 2.0 0.1 0.1 16.9 51.3 35.7 87.0
2020 (s) 27.5 0.6 2.0 (s) 0.8 0.0 3.4 0.0 2.1 0.1 0.1 16.0 49.2 33.2 82.4
2021 (s) 26.1 0.6 2.3 (s) 0.8 0.0 3.6 0.0 2.2 0.1 0.1 16.7 49.0 34.9 83.8
aIncludes supplemental gaseous fuels that are commingled with natural gas. iElectricity sales to ultimate customers reported by electric utilities and, beginning in 1996, other energy service providers.
bHydrocarbon gas liquids, assumed to be propane only. jBeginning in 1980, adjusted for the double-counting of supplemental gaseous fuels, which are included in both natural gas and
the other fossil fuels from which they are mostly derived, but should be counted only once in End Use and Total. For 1981 through
1992, includes fuel ethanol blended into motor gasoline that is not included in the motor gasoline column. Beginning in 2009, includes
a small amount of wind energy consumed by commercial utility-scale facilities.
cBeginning in 1993, includes fuel ethanol blended into motor gasoline. There is a discontinuity in this time series between 2014
and 2015 because of coverage. See Technical Notes, Section 4.
kIncurred in the generation, transmission, and distribution of electricity plus plant use and unaccounted for electrical system energy
losses. Pre-1990 estimates are not comparable to those for later years. See Section 6 of Technical Notes for an explanation of
changes in methodology.
dIncludes small amounts of petroleum coke not shown separately. – – = Not applicable. NA = Not available.
eConventional hydroelectric power. For 1960 through 1989, includes hydroelectric pumped-storage, which cannot be separately
identified.
Where shown, R = Revised data and (s) = Physical unit value less than 0.5 or Btu value less than 0.05.
fThere is a discontinuity in this time series between 1988 and 1989 due to the expanded coverage of renewable energy sources
beginning in 1989.
Notes: Totals may not equal sum of components due to independent rounding. · The commercial sector includes commercial
combined-heat-and-power (CHP) and commercial electricity-only plants. · The continuity of these data series estimates may be
affected by changing data sources and estimation methodologies. See the Technical Notes for each type of energy.
gWood, wood-derived fuels, and biomass waste. Prior to 2001, includes non-biomass waste. Web Page: All data are available at https://www.eia.gov/state/seds/seds-data-complete.php.
hSolar thermal and photovoltaic energy. Excludes a small amount of solar thermal energy consumed as heat that is included in the
residential sector.
Data Source: U.S. Energy Information Administration, State Energy Data System. See Technical Notes.
http://www.eia.gov/state/seds/