| Public power utility | Retail electric customers |
|---|---|
| City of Idaho Falls | 32,782 |
| City of Burley | 5,296 |
| City of Weiser | 3,201 |
| City of Rupert | 3,181 |
| City of Bonners Ferry | 2,913 |
| City of Soda Springs | 1,894 |
| City of Heyburn | 1,689 |
| City of Plummer | 1,068 |
| City of Albion | 202 |
| City of Declo | 139 |
| City of Minidoka | 49 |
Largest first by retail electric customers, as each employer reports it to its federal registry.
Source: U.S. Energy Information Administration, Annual Electric Power Industry Report (Form EIA-861), 2024 final data. Data captured October 2, 2026.
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