States › Idaho › Cassia County
Electric utilities serving Cassia County, Idaho
Utilities that list the county in their Form EIA-861 service territory for 2024, with each one's average price, bill and outage minutes.
Cassia County, Idaho, appears in the Form EIA-861 service territory of 8 utilities for 2024; Idaho Power Co, City of Burley and United Electric Co-op, Inc are the largest by residential customers statewide.
Their average residential prices ran from 7.89¢ to 11.76¢ per kilowatthour, with a median of 9.18¢, against a Idaho average of 11.52¢ and a US average of 16.48¢. Each price is the utility's figure for all of its Idaho customers, not for this county alone.
The median SAIDI they reported was 128.1 minutes per customer including major event days; the median among all Idaho utilities reporting was 198.9.
The Census Bureau estimates the county's population at 26,397. EIA does not publish customers by county, so which utility serves a given address has to be confirmed with the utility or the state utility commission.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Figures are for each utility's whole Idaho operation; EIA publishes nothing at county level.
Utilities and their 2024 figures
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Idaho Power Co | Investor-owned | 525,751 | 11.76¢ | $107.68 | 206.5 | 164.0 |
| City of Burley short form | Municipal | 5,296 | — | — | — | — |
| United Electric Co-op, Inc | Cooperative | 5,100 | 7.89¢ | $129.95 | 49.7 | 40.3 |
| Raft Rural Elec Coop Inc | Cooperative | 1,391 | 9.18¢ | $137.07 | — | — |
| South Side Electric, Inc short form | Cooperative | 865 | — | — | — | — |
| East End Mutual Elec Co Ltd short form | Cooperative | 815 | — | — | — | — |
| City of Albion short form | Municipal | 202 | — | — | — | — |
| City of Declo short form | Municipal | 139 | — | — | — | — |
Ordered by residential customers in Idaho. Short-form filers are small utilities that report only totals to EIA, so no residential price is available; their all-sector revenue per kWh was City of Burley 7.76¢, South Side Electric, Inc 6.71¢, East End Mutual Elec Co Ltd 8.34¢, City of Albion 8.66¢, City of Declo 10.00¢. A utility with no customers shown reported its retail sales elsewhere or delivers power that other companies bill for.
Against the state and the country
| Measure, 2024 | Utilities listing Cassia County | Idaho | United States |
|---|---|---|---|
| Average residential price per kWh | 9.18¢ median | 11.52¢ | 16.48¢ |
| Average monthly residential bill | $129.95 median | $108.73 | $142.26 |
| SAIDI, all events (minutes) | 128.1 median | 198.9 median | 184.5 median |
| SAIDI, without major event days | 102.2 median | 129.4 median | 99.8 median |
| Utilities counted | 8 | 13 | 1,413 |
Outage minutes reported
SAIDI for 2024 across each utility's whole system, including major event days (paler bars: only the figure without major event days was reported). Not a measure of outages in Cassia County itself.
Population: 26,397 (U.S. Census Bureau, Vintage 2025 estimate). Statewide, residential sales came to 4,844 kWh per resident in 2024.
Other Idaho counties
- Bonneville County 3
- Boundary County 2
- Butte County 3
- Camas County 1
- Canyon County 1
- Caribou County 3
- Clark County 3
- Clearwater County 3
- Custer County 3
- Elmore County 2
- Franklin County 1
- Fremont County 3
All 44 counties and every Idaho utility
Questions and answers
Who provides electricity in Cassia County?
Idaho Power Co, City of Burley, United Electric Co-op, Inc, Raft Rural Elec Coop Inc, South Side Electric, Inc and East End Mutual Elec Co Ltd and 2 more list the county in their Form EIA-861 service territory for 2024. Territories overlap, and a utility may cover only a corner of the county.
What is the electricity price in Cassia County?
EIA has no county-level prices. The utilities serving the county reported average residential prices of 7.89¢ to 11.76¢ per kilowatthour across their Idaho customers in 2024; the state average was 11.52¢.
How reliable is power in Cassia County?
Reliability is reported per utility, not per county. The utilities listed reported a median of 128.1 minutes of interruption per customer in 2024 including major event days and 102.2 minutes excluding them.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861 for 2024, final release: service territory file (counties by utility), sales to ultimate customers, reliability and short form files. State and US averages: Form EIA-861M workbook. Population: U.S. Census Bureau. Public domain. To confirm the utility at an address, ask the utility or the state utility commission.