Maine electricity rates
26 residential tariffs from 7 utilities. Across the 8 filed since 2020, the median costs $0.2536 per kWh at 1,000 kWh a month once fixed charges are included — the cheapest $0.1130, the most expensive $0.3137.
$0.2536median $/kWh
7utilities
26tariffs on file
46%time-of-use
31%filed since 2020
Rate structures in Maine
| Structure | Tariffs |
|---|---|
| Time-of-use | 10 |
| Flat | 8 |
| Tiered | 6 |
| Time-of-use + tiered | 2 |
Lowest effective rates at 1,000 kWh/month
Ranked across the 8 tariffs filed since 2020 — 31% 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 |
|---|---|---|---|---|---|
| Central Maine Power Co | A-TOU-OPTS Residential Service - Optional Time-Of-Use (Super Saver) | Time-of-use | 2022 | $0.1130 | $1,356.42 |
| Central Maine Power Co | A Residential Standard Offer Service | Tiered | 2026 | $0.1599 | $1,918.32 |
| Central Maine Power Co | A-TOU Residential Service - Time-of-Use | Time-of-use | 2026 | $0.1732 | $2,077.99 |
| Central Maine Power Co | A-TOU-OPTS Residential Service - Optional Time-Of-Use (Super Saver) | Time-of-use | 2022 | $0.2312 | $2,774.51 |
| Bangor Hydro-Electric Co | Rate A Residential Service | Flat | 2025 | $0.2760 | $3,311.82 |
| Central Maine Power Co | A Residential Standard Offer Service (Bundled) | Tiered | 2026 | $0.2871 | $3,444.84 |
| Central Maine Power Co | A-TOU Residential Service Time-of-Use | Time-of-use | 2026 | $0.3004 | $3,604.51 |
| Bangor Hydro-Electric Co | Rate A-4 Residential Service - Time of Use | Time-of-use | 2026 | $0.3137 | $3,763.97 |