Montana electricity rates
86 residential tariffs from 32 utilities. Across the 3 filed since 2020, the median costs $0.1402 per kWh at 1,000 kWh a month once fixed charges are included — the cheapest $0.1207, the most expensive $0.1444.
$0.1402median $/kWh
32utilities
86tariffs on file
19%time-of-use
4%filed since 2020
Rate structures in Montana
| Structure | Tariffs |
|---|---|
| Flat | 41 |
| Tiered | 28 |
| Time-of-use | 14 |
| Time-of-use + tiered | 2 |
| Unclassified | 1 |
Lowest effective rates at 1,000 kWh/month
Ranked across the 3 tariffs filed since 2020 — 4% 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 |
|---|---|---|---|---|---|
| NorthWestern Corporation | REDS-1 Residential Customer | Flat | 2023 | $0.1207 | $1,448.33 |
| Avista Corp | 1 Residential Service | Tiered | 2026 | $0.1402 | $1,682.76 |
| Missoula Electric Coop, Inc (Montana) | Residential | Time-of-use | 2023 | $0.1444 | $1,733.23 |