South Dakota electricity rates
168 residential tariffs from 61 utilities. Across the 17 filed since 2020, the median costs $0.1523 per kWh at 1,000 kWh a month once fixed charges are included — the cheapest $0.0964, the most expensive $0.1776.
$0.1523median $/kWh
61utilities
168tariffs on file
36%time-of-use
11%filed since 2020
Rate structures in South Dakota
| Structure | Tariffs |
|---|---|
| Flat | 63 |
| Time-of-use | 43 |
| Tiered | 41 |
| Time-of-use + tiered | 18 |
| Unclassified | 3 |
Lowest effective rates at 1,000 kWh/month
Ranked across the 17 tariffs filed since 2020 — 11% 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | RATE GET - GENERAL ENERGY TIME-OF-USE SERVICE (Residential) | Time-of-use + tiered | 2026 | $0.0964 | $1,156.71 |
| MidAmerican Energy Co | RATE GE - GENERAL ENERGY SERVICE (Residential) | Time-of-use + tiered | 2026 | $0.1021 | $1,225.32 |
| MidAmerican Energy Co | RATE RST - RESIDENTIAL TIME-OF-USE SERVICE | Time-of-use | 2026 | $0.1061 | $1,273.53 |
| MidAmerican Energy Co | RATE RS - RESIDENTIAL SERVICE | Time-of-use + tiered | 2026 | $0.1100 | $1,320.20 |
| NorthWestern Energy | Rate 14: Residential Space Heating and Cooling | Flat | 2025 | $0.1130 | $1,356.12 |
| NorthWestern Energy | Rate 15: Residential Dual Fuel and Controlled Service. | Flat | 2025 | $0.1130 | $1,356.12 |
| Northern States Power Co - Minnesota | Residential Service - Underground Electric Space Heating (A03) | Time-of-use | 2025 | $0.1450 | $1,740.52 |
| Northern States Power Co - Minnesota | Residential Service - Overhead Electric Space Heating (A01) | Time-of-use | 2025 | $0.1450 | $1,740.52 |
| Northern States Power Co - Minnesota | Residential TOD Underground Electric Space Heating (A04) | Time-of-use | 2025 | $0.1523 | $1,827.19 |
| Northern States Power Co - Minnesota | Residential TOD Overhead Electric Space Heating (A02) | Time-of-use | 2025 | $0.1523 | $1,827.19 |