Hydro Power in Montana
Net generation and share of the state power mix, 2025 — U.S. Energy Information Administration.
Hydro generation (2025)
9,791 thousand MWh
Share of state power mix
34.35%
National rank (hydro output)
#5
U.S. average share
5.58%
Hydro share of Montana's power mix over time
2001: 27.29% → 2025: 34.35%
Year by year
| Year | Hydro (thousand MWh) | Share of state mix |
|---|---|---|
| 2025 | 9,791 | 34.35% |
| 2024 | 9,220 | 34.31% |
| 2023 | 8,792 | 32.69% |
| 2022 | 9,886 | 36.49% |
| 2021 | 9,258 | 37.11% |
| 2020 | 10,748 | 46.02% |
| 2019 | 10,005 | 35.99% |
| 2018 | 11,405 | 40.42% |
| 2017 | 10,946 | 38.79% |
| 2016 | 10,083 | 36.29% |
| 2015 | 9,888 | 33.74% |
| 2014 | 11,483 | 37.95% |
| 2013 | 9,638 | 34.81% |
| 2012 | 11,283 | 40.58% |
| 2011 | 12,596 | 41.81% |
| 2010 | 9,415 | 31.6% |
| 2009 | 9,506 | 35.59% |
| 2008 | 10,000 | 33.74% |
| 2007 | 9,364 | 32.37% |
| 2006 | 10,130 | 35.87% |
| 2005 | 9,587 | 34.32% |
| 2004 | 8,856 | 33.06% |
| 2003 | 8,702 | 33.13% |
| 2002 | 9,567 | 37.56% |
| 2001 | 6,613 | 27.29% |
Source: U.S. Energy Information Administration, electric power operational data (net generation by state and energy source). "Share of state mix" is this fuel's net generation as a percentage of all in-state net generation.