U.S. RANK #40 · MT 0.09% OF U.S. GENERATION
Montana Electricity Generation & Grid Mix
In 2025, Montana (MT) generated 28.20 TWh of electricity (0.09% of U.S. generation, ranked #40 among U.S. states). Its #1 electricity source was Coal at 10.02 TWh (35.5% of state output), while low-carbon sources supplied 58.8%.
2025 Generation 28.20 TWh U.S. Rank #40
#1 Power Source Coal 35.5% (10.0 TWh)
Low-Carbon Share 58.8% Wind + Solar: 23.9%
Fossil Share 41.2% 5Y Gen Change: +22.9%
CO2 Intensity 333 gCO2/kWh 9.4 Mt CO2 total
2025 Montana Grid Fuel Mix Breakdown (100% = 28.20 TWh)
Coal: 35.5% (10.02 TWh)
Hydroelectric: 34.7% (9.79 TWh)
Wind: 22.2% (6.25 TWh)
Natural Gas: 4.7% (1.32 TWh)
Solar: 1.8% (0.50 TWh)
Oil & Other Fossil: 1.0% (0.28 TWh)
GRID TELEMETRY · 2025 GENERATION MIX & 2000-2025 SERIES
58.8% Low-Carbon
Montana (MT) Electricity Generation by Source (2025)
2025 Total Output: 28.20 TWh · Carbon Intensity: 333 gCO2/kWh
Coal
10.02 TWh 35.5% +18%
Hydroelectric
9.79 TWh 34.7% -9%
Wind
6.25 TWh 22.2% +104%
Natural Gas
1.32 TWh 4.7% +354%
Solar
0.50 TWh 1.8% +646%
Oil & Other Fossil
0.28 TWh 1.0% +9%
Bioenergy
0.04 TWh 0.1% +13%
Loading grid telemetry series...
Montana Historical Electricity Generation by Fuel (2001-2025)
| Year | Total (TWh) | Coal | Gas | Nuclear | Hydro | Wind | Solar | Clean % | gCO2/kWh |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.20 | 10.02 | 1.32 | 0.00 | 9.79 | 6.25 | 0.50 | 58.8% | 333 |
| 2024 | 26.60 | 9.79 | 1.00 | 0.00 | 9.22 | 5.82 | 0.47 | 58.4% | 339 |
| 2023 | 26.49 | 11.55 | 1.00 | 0.00 | 8.79 | 4.56 | 0.32 | 51.7% | 393 |
| 2022 | 26.69 | 11.65 | 0.73 | 0.00 | 9.89 | 4.02 | 0.08 | 52.5% | 390 |
| 2021 | 24.55 | 10.88 | 0.53 | 0.00 | 9.26 | 3.47 | 0.08 | 52.3% | 394 |
| 2020 | 22.94 | 8.49 | 0.29 | 0.00 | 10.75 | 3.06 | 0.07 | 60.6% | 331 |
| 2019 | 27.37 | 14.10 | 0.51 | 0.00 | 10.00 | 2.37 | 0.05 | 45.5% | 450 |
| 2018 | 27.80 | 13.36 | 0.48 | 0.00 | 11.40 | 2.15 | 0.05 | 49.0% | 422 |
| 2017 | 27.79 | 13.86 | 0.42 | 0.00 | 10.95 | 2.15 | 0.03 | 47.3% | 436 |
| 2016 | 27.35 | 14.27 | 0.48 | 0.00 | 10.08 | 2.14 | 0.01 | 44.8% | 455 |
| 2015 | 28.83 | 16.01 | 0.60 | 0.00 | 9.89 | 1.96 | 0.01 | 41.2% | 483 |
| 2014 | 29.87 | 15.58 | 0.52 | 0.00 | 11.48 | 1.97 | 0.01 | 45.1% | 453 |
| 2013 | 27.24 | 14.88 | 0.61 | 0.00 | 9.64 | 1.75 | 0.00 | 41.8% | 477 |
| 2012 | 27.35 | 13.99 | 0.46 | 0.00 | 11.28 | 1.26 | 0.00 | 45.9% | 447 |
| 2011 | 29.69 | 15.06 | 0.42 | 0.00 | 12.60 | 1.27 | 0.00 | 46.7% | 442 |
| 2010 | 29.40 | 18.60 | 0.06 | 0.00 | 9.41 | 0.93 | 0.00 | 35.5% | 536 |
| 2009 | 26.23 | 15.61 | 0.08 | 0.00 | 9.51 | 0.82 | 0.00 | 39.7% | 503 |
| 2008 | 29.23 | 18.33 | 0.07 | 0.00 | 10.00 | 0.59 | 0.00 | 36.6% | 528 |
| 2007 | 28.47 | 18.36 | 0.11 | 0.00 | 9.36 | 0.50 | 0.00 | 35.0% | 540 |
| 2006 | 27.85 | 17.09 | 0.07 | 0.00 | 10.13 | 0.44 | 0.00 | 38.3% | 515 |
| 2005 | 27.54 | 17.82 | 0.03 | 0.00 | 9.59 | 0.00 | 0.00 | 35.1% | 541 |
| 2004 | 26.37 | 17.38 | 0.03 | 0.00 | 8.86 | 0.00 | 0.00 | 33.8% | 551 |
| 2003 | 25.88 | 17.05 | 0.03 | 0.00 | 8.70 | 0.00 | 0.00 | 33.9% | 550 |
| 2002 | 25.02 | 15.34 | 0.02 | 0.00 | 9.57 | 0.00 | 0.00 | 38.5% | 514 |
| 2001 | 23.74 | 17.04 | 0.02 | 0.00 | 6.61 | 0.00 | 0.00 | 28.1% | 596 |