Electric utilities in Idaho
Every electric utility serving Idaho in EIA data year 2025, with ownership type, grid operator, balancing authority, customers and the counties each one serves.
Retail electric utilities in Idaho
Sorted by customers. See Idaho on the map, and the state regulator, Idaho Public Utilities Commission.
| Utility | EIA ID | Type | ISO or region | Balancing authority | Customers | Counties served |
|---|---|---|---|---|---|---|
| Idaho Power CoIdaho Power | 9191 | Investor-owned | West (no ISO) | IPCO | 532,401 | 24 Ada, Adams, Bannock, Bingham, Blaine, Boise, Camas, Canyon, Cassia, Elmore, Gem, Gooding, Idaho, Jerome, Lemhi, Lincoln, Minidoka, Oneida, Owyhee, Payette, Power, Twin Falls, Valley, Washington |
| Avista CorpAvista | 20169 | Investor-owned | West (no ISO) | AVA | 133,401 | 9 Benewah, Bonner, Clearwater, Idaho, Kootenai, Latah, Lewis, Nez Perce, Shoshone |
| PacifiCorpPacifiCorp (Rocky Mountain Power UT/WY/ID; Pacific Power OR/WA/CA) | 14354 | Investor-owned | West (no ISO) | PACE | 79,485 | 14 Bannock, Bear Lake, Bingham, Bonneville, Butte, Caribou, Clark, Franklin, Fremont, Jefferson, Madison, Oneida, Power, Teton |
| City of Idaho Falls - (ID) | 9187 | Municipal | West (no ISO) | PACE | 28,175 | 1 Bonneville |
| Kootenai Electric Cooperative | 10454 | Cooperative | West (no ISO) | AVA | 25,472 | 3 Benewah, Bonner, Kootenai |
| Northern Lights, Inc | 13758 | Cooperative | West (no ISO) | BPAT | 15,825 | 3 Bonner, Boundary, Kootenai |
| Fall River Rural Elec Coop Inc | 6169 | Cooperative | West (no ISO) | BPAT | 14,695 | 5 Clark, Fremont, Jefferson, Madison, Teton |
| Clearwater Power Company | 3739 | Cooperative | West (no ISO) | AVA | 9,588 | 7 Benewah, Clearwater, Idaho, Latah, Lewis, Nez Perce, Shoshone |
| United Electric Co-op, Inc - (ID) | 19502 | Cooperative | West (no ISO) | BPAT | 6,736 | 2 Cassia, Minidoka |
| City of Burley - (ID) | 2545 | Municipal | West (no ISO) | BPAT | 4,768 | 2 Cassia, Minidoka |
| Idaho County L&P Coop Assn, Inc | 9186 | Cooperative | West (no ISO) | AVA | 4,003 | 2 Idaho, Lewis |
| City of Weiser - (ID) | 20297 | Municipal | West (no ISO) | BPAT | 3,482 | 1 Washington |
| City of Rupert - (ID) | 16416 | Municipal | West (no ISO) | BPAT | 3,012 | 1 Minidoka |
| Salmon River Electric Coop Inc | 16565 | Cooperative | West (no ISO) | IPCO | 2,797 | 3 Blaine, Custer, Lemhi |
| City of Bonners Ferry | 1956 | Municipal | West (no ISO) | BPAT | 2,767 | 1 Boundary |
| Lost River Electric Coop Inc | 11211 | Cooperative | West (no ISO) | PACE | 2,728 | 3 Blaine, Butte, Custer |
| Raft Rural Elec Coop Inc | 22814 | Cooperative | West (no ISO) | BPAT | 2,616 | 4 Cassia, Oneida, Owyhee, Power |
| City of Soda Springs - (ID) | 17493 | Municipal | West (no ISO) | PACE | 1,871 | 1 Caribou |
| Inland Power & Light Company | 8699 | Cooperative | West (no ISO) | BPAT | 1,832 | 3 Benewah, Bonner, Kootenai |
| Lower Valley Energy Inc | 11273 | Cooperative | West (no ISO) | BPAT | 1,741 | 2 Bonneville, Caribou |
| City of Heyburn - (ID) | 8532 | Municipal | West (no ISO) | BPAT | 1,664 | 1 Minidoka |
| City of Plummer - (ID) | 15297 | Municipal | West (no ISO) | AVA | 963 | 1 Benewah |
| South Side Electric, Inc | 17576 | Cooperative | West (no ISO) | BPAT | 813 | 1 Cassia |
| East End Mutual Elec Co Ltd | 5584 | Cooperative | West (no ISO) | BPAT | 747 | 2 Cassia, Minidoka |
| Riverside Electric Cooperative | 56536 | Cooperative | West (no ISO) | IPCO | 594 | 1 Minidoka |
| City of Albion - (ID) | 244 | Municipal | West (no ISO) | BPAT | 214 | 1 Cassia |
| City of Declo - (ID) | 7084 | Municipal | West (no ISO) | BPAT | 130 | 1 Cassia |
| Farmers Electric Company, Ltd - (ID) | 6155 | Cooperative | West (no ISO) | BPAT | 125 | 1 Minidoka |
| Missoula Electric Coop, Inc | 12692 | Cooperative | West (no ISO) | BPAT | 57 | 1 Idaho |
| City of Minidoka - (ID) | 12609 | Municipal | West (no ISO) | BPAT | 45 | 1 Minidoka |
| Vigilante Electric Coop, Inc | 23586 | Cooperative | West (no ISO) | NWMT | 35 | 1 Clark |
| Bonneville Power Administration | 1738 | Federal | West (no ISO) | — | — | 18 Bingham, Bonner, Bonneville, Boundary, Butte, Clearwater, Custer, Elmore, Fremont, Gem, Jefferson, Kootenai, Latah, Madison, Nez Perce, Power, Shoshone, Teton |
Which utilities serve each county in Idaho
About this data
Which utilities exist comes from the U.S. Energy Information Administration’s Form EIA-861 and EIA-861S, data year 2025 (final release, October 7, 2026), read directly from eia.gov. County service territories, balancing authority codes and customer counts come from EIA-861 for 2018, the latest year compiled at county level for this directory; utilities that started reporting after 2018 carry their 2025 values. County boundaries are U.S. Census cartographic boundaries (us-atlas 3.0, Albers USA projection).
Customer counts are per utility within Idaho. A county’s grid operator is the one serving most of its customers, estimated by spreading each utility’s customers evenly over its counties. Download every state in one file from the U.S. Electric Utility Directory.
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