U.S. top 11 states by conventional hydropower generation decline; thousand MWh, 2023–2024.
This comparison ranks states in the United States by the decline in conventional hydropower utility-scale net generation from 2023 to 2024. Values are measured in thousand megawatthours using annual EIA observations. California records the largest decline at 2,927 thousand MWh, falling from 32,381 thousand MWh to 29,454 thousand MWh. Maine is second at 980 thousand MWh, followed by Washington at 710 thousand MWh.
| Rank | Entry | Value | Period |
|---|---|---|---|
| 1 | California | 2,927 | 2023–2024 |
| 2 | Maine | 980 | 2023–2024 |
| 3 | Washington | 710 | 2023–2024 |
| 4 | Arizona | 623 | 2023–2024 |
| 5 | New York | 489 | 2023–2024 |
| 6 | Massachusetts | 284 | 2023–2024 |
| 7 | Vermont | 255 | 2023–2024 |
| 8 | New Hampshire | 181 | 2023–2024 |
| 9 | West Virginia | 169 | 2023–2024 |
| 10 | Michigan | 140 | 2023–2024 |
| 11 | Virginia | 138 | 2023–2024 |
Source 1: Electric Power Annual 2024
Publisher: U.S. Energy Information Administration
Dataset/table: Utility-Scale Conventional Hydropower Net Generation by State
Units: thousand megawatthours
Date checked: 2026-07-15
Evidence: Supports the 2023 and 2024 state values used to calculate the complete 25-state ranking.
Generation values cover utility-scale conventional hydropower and exclude pumped-storage hydroelectric generation. Change values compare two final annual observations and do not establish a long-run trend.
State values come from the U.S. Energy Information Administration's Electric Power Annual 2024. Each decline is the absolute size of the final 2024 value minus the 2023 value, and only states with lower generation are ranked. Census divisions, the U.S. total and the District of Columbia are excluded. The graphic highlights the top 11 states, while the page data retains all 25 eligible states.
Every state uses the same U.S. EIA annual release, the same 2023 and 2024 endpoints and one common measurement basis, supporting a like-for-like comparison.
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