Electricity rates — Idaho Power Co
A household served by Idaho Power Co using 1,000 kWh a month pays about $1,447.26 a year on the cheapest of 3 generally available plans — Schedule 5 - Residential Time-of-Day from Idaho Power Co, in effect since February 2025. Rates checked September 23, 2026. A further 1 schedule is published but restricted — means-tested, closed to new customers, or needing particular equipment — and it is priced further down.
Every priced plan, 1,000 kWh/mo
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| Schedule 5 - Residential Time-of-Day✓ cheapesttime-of-use · in effect since February 2025 | $1,447.26 | — | 12.1¢ |
| Schedule 5 - Residential Time-of-Daytime-of-use · in effect since February 2025 | $2,113.57 | +$666.31 | 17.6¢ |
| Schedule 1 - Residential Servicepriced by season · tiered · in effect since February 2025 | $2,124.20 | +$676.94 | 17.7¢ |
| Schedule 3 - Master-Metered Mobile Homeflat rate · in effect since February 2025 · needs a multi-family or master-metered building | $2,286.96 | +$839.70 | 19.1¢ |
Cost across usage levels
The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.
- 500 kWh/mo — cheapest $813.63 (Schedule 5 - Residential Time-of-Day), dearest $1,146.78, a $333.15 spread
- 1,000 kWh/mo — cheapest $1,447.26 (Schedule 5 - Residential Time-of-Day), dearest $2,124.20, a $676.94 spread
- 2,000 kWh/mo — cheapest $2,714.54 (Schedule 5 - Residential Time-of-Day), dearest $4,192.96, a $1,478.42 spread
What a typical bill costs
At 1,000 kWh a month the 3 generally available plans here run from $1,447.26 on Schedule 5 - Residential Time-of-Day to $2,124.20 on Schedule 1 - Residential Service, with a median of $2,113.57.
Effective rates, bill divided by kilowatt-hours, span 12.1¢ to 17.7¢ per kWh at that usage.
How it compares
Among the 109 utilities indexed, Idaho Power Co's cheapest open plan is the 32nd-lowest, 12% less than their median of $1,649.16. It sits between Snohomish County PUD No 1 ($1,410.41) and Kansas City Power & Light Co (Missouri) ($1,447.68).
None of Idaho Power Co's plans open to any household has a tiered step or a seasonal price in this data: a kWh costs the same however much is used and whatever the month.
How the answer changes with usage
Schedule 5 - Residential Time-of-Day is cheapest at every level tested — $813.63 a year at 500 kWh a month, $2,714.54 at 2,000 kWh.
The penalty for a poor choice grows with usage: $333.15 a year at 500 kWh against $1,478.42 at 2,000 kWh.
Cheapest 4 plans at 1,000 kWh a month
Schedule 5 - Residential Time-of-Day — $1,447.26 a year, 12.1¢ per kWh effective, time-of-use. It carries a $15.00 monthly standing charge. In effect since February 2025.
Schedule 5 - Residential Time-of-Day — $2,113.57 a year, 17.6¢ per kWh effective, time-of-use. It carries a $15.00 monthly standing charge. In effect since February 2025.
Schedule 1 - Residential Service — $2,124.20 a year, 17.7¢ per kWh effective, tiered and priced by season. It carries a $15.00 monthly standing charge. In effect since February 2025.
Schedule 3 - Master-Metered Mobile Home — $2,286.96 a year, 19.1¢ per kWh effective, flat rate. It carries a $15.00 monthly standing charge. In effect since February 2025. Restricted: needs a multi-family or master-metered building.
How these plans are structured
Of 4 priceable plans: 1 tiered, 2 time-of-use, 1 priced by season, 1 flat-rate.
Every plan carries a $15.00 fixed monthly charge.
Who provides these plans
4 of Idaho Power Co's 4 published residential schedules can be priced. EIA-861 lists it serving homes in more than one state and its URDB record does not say which these schedules are for, so it appears on no state page.
The largest saving available here
Moving from Schedule 1 - Residential Service to Schedule 5 - Residential Time-of-Day saves $676.94 a year at 1,000 kWh a month, with no change in consumption.
What this does not cover
2 of these plans price by the hour, so their figures are marked lower confidence.
New to these terms? The methodology page explains tiered bands, time-of-use periods and fixed charges, and sets out exactly what the rate engine assumes.
Estimate — your actual bill may differ.
Tariff structures from NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved September 23, 2026.