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State profile · IA

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, all in
156utilities
333tariffs on file
5%time-of-use
2%filed since 2020
Where Iowa sits — effective $/kWh at 1,000 kWh a month
  • 7 comparable tariffs: $0.0964 to $0.1749
  • Iowa median $0.1100
  • US median $0.1658

Rate structures in Iowa

  • Flat 137 (41%)
  • Tiered 96 (29%)
  • Seasonal + tiered 42 (13%)
  • Seasonal 41 (12%)
  • Time-of-use 14 (4%)
  • Time-of-use + tiered 2 (1%)
  • Unclassified 1 (0%)

Lowest effective rates at 1,000 kWh/month

Ranked across tariffs filed since 2020: 7 here, 2% of those on file. 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.

UtilityTariffStructureFiled $/kWhAnnual
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) Seasonal + 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 Seasonal + 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 Seasonal 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

Not a 1,000 kWh household?

Price every Iowa tariff against the usage on your own bill.

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Guides to these rates

All guides

  1. Guide · 3 min

    Your utility probably offers more than one rate

    At 104 utilities with more than one current residential tariff open to everyone, the cheapest option beat the middle one by a median $71 a year at 1,000 kWh a month — and by more than $250 at 21 of them.

  2. Guide · 3 min

    When is electricity most expensive? It depends on your utility

    Across 95 utilities with time-of-use rates we found 49 different weekday peak windows. Nearly all include 5 to 6 pm; little else is shared.

  3. Guide · 4 min

    Some utilities charge households for their peak demand

    59 household tariffs at 27 utilities charge for peak demand, typically $8.58 per kW a month. From 2027, southern Nevada's homes will pay one by the day.

  4. Guide · 4 min

    Does each extra kWh cost more? It depends where you live

    Of 84 utilities with tiered residential rates, 43 charge more per kWh as usage rises, 23 charge less, and 11 do both: rising in summer, falling in winter.

  5. Guide · 3 min

    Does electricity cost more in summer? At about half of utilities, yes

    Of 174 utilities, 82 charge more for the same 1,000 kWh in July than in January, typically about $12 a month. 19 charge more in winter.