Wyoming electricity rates
105 residential tariffs from 32 utilities. Across the 6 filed since 2020, the median costs $0.1479 per kWh at 1,000 kWh a month once fixed charges are included — the cheapest $0.1207, the most expensive $0.1570.
$0.1479median $/kWh
32utilities
105tariffs on file
26%time-of-use
6%filed since 2020
Rate structures in Wyoming
| Structure | Tariffs |
|---|---|
| Flat | 62 |
| Time-of-use | 23 |
| Tiered | 13 |
| Time-of-use + tiered | 4 |
| Unclassified | 3 |
Lowest effective rates at 1,000 kWh/month
Ranked across the 6 tariffs filed since 2020 — 6% 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 |
| High West Energy, Inc (Wyoming) | Residential Time-of-Day | Time-of-use | 2025 | $0.1390 | $1,667.96 |
| PacifiCorp (Wyoming) | 2 Residential Service Single Phase | Flat | 2026 | $0.1460 | $1,751.88 |
| PacifiCorp (Wyoming) | 19 Residential Service Time of Use Pilot Single Phase | Time-of-use | 2026 | $0.1497 | $1,796.95 |
| PacifiCorp (Wyoming) | 2 Residential Service Three Phase | Flat | 2026 | $0.1532 | $1,838.52 |
| PacifiCorp (Wyoming) | 19 Residential Service Time of Use Pilot Three Phase | Time-of-use | 2026 | $0.1570 | $1,883.59 |