Iowa electricity rates
333 residential tariffs from 156 utilities. Across the 7 filed since 2020, the median costs $0.1100 per kWh at 1,000 kWh a month once fixed charges are included — the cheapest $0.0964, the most expensive $0.1749.
$0.1100median $/kWh
156utilities
333tariffs on file
30%time-of-use
2%filed since 2020
Rate structures in Iowa
| Structure | Tariffs |
|---|---|
| Flat | 136 |
| Tiered | 96 |
| Time-of-use | 56 |
| Time-of-use + tiered | 44 |
| Unclassified | 1 |
Lowest effective rates at 1,000 kWh/month
Ranked across the 7 tariffs filed since 2020 — 2% 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 |
| Linn County Rural E C A | Residential Time of Day | Time-of-use | 2023 | $0.1430 | $1,716.17 |
| Interstate Power and Light Co | Electric Residential Service Usage - 400 | Time-of-use | 2025 | $0.1746 | $2,095.38 |
| Interstate Power and Light Co | Electric Residential Service Usage Time of Day - 407 | Time-of-use | 2025 | $0.1749 | $2,098.32 |