Idaho electricity rates
63 residential tariffs from 26 utilities. Across the 7 filed since 2020, the median costs $0.1402 per kWh at 1,000 kWh a month once fixed charges are included — the cheapest $0.0976, the most expensive $0.1906.
$0.1402median $/kWh
26utilities
63tariffs on file
11%time-of-use
13%filed since 2020
Rate structures in Idaho
| Structure | Tariffs |
|---|---|
| Flat | 44 |
| Tiered | 12 |
| Time-of-use | 5 |
| Time-of-use + tiered | 2 |
Lowest effective rates at 1,000 kWh/month
Ranked across the 7 tariffs filed since 2020 — 13% of those on file here. Older filings are excluded because they are systematically below what utilities now charge; see methodology. Effective rate includes fixed charges, and availability restrictions may apply.
| Utility | Tariff | Structure | Filed | $/kWh | Annual |
|---|---|---|---|---|---|
| Idaho Power Co | Schedule 5 - Residential Time-of-Day | Time-of-use | 2022 | $0.0976 | $1,171.73 |
| PacifiCorp (Idaho) | Schedule 36 - Residential Service Optional TOD | Time-of-use | 2024 | $0.1122 | $1,346.34 |
| Idaho Power Co | Schedule 5 - Residential Time-of-Day | Time-of-use | 2025 | $0.1255 | $1,506.34 |
| Avista Corp | 1 Residential Service | Tiered | 2026 | $0.1402 | $1,682.76 |
| Idaho Power Co | Schedule 1 - Residential Service | Time-of-use + tiered | 2025 | $0.1770 | $2,124.17 |
| Idaho Power Co | Schedule 5 - Residential Time-of-Day | Time-of-use | 2025 | $0.1810 | $2,172.62 |
| Idaho Power Co | Schedule 3 - Master-Metered Mobile Home | Flat | 2025 | $0.1906 | $2,286.92 |