HomeWattCost

Idaho Power rates

Idaho Power has 2 residential plans modelled here. For a typical Idaho home using 904 kWh a month, the cheapest is Schedule 1, at about $121 a month.

Investor-owned 525,751 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceSchedule 1

01234567890123456789.0123456789¢/kWh
Schedule 1$121/mo
Schedule 5$131/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
Schedule 1
Residential Service
Tiered $15.35 13.0¢ 0–800 kWh · 14.2¢ 800–2,000 kWh · 15.6¢ over 2,000 kWh 10.8¢ 0–800 kWh · 11.3¢ 800–2,000 kWh · 11.9¢ over 2,000 kWh None
Schedule 5
Residential Time-of-Day
Time-of-use $15.35 Off-peak 8.3¢ · Mid-peak 15.9¢ · Peak 31.3¢ Off-peak 10.1¢ · Peak 14.8¢ Mid-peak 3 pm–7 pm, Peak 7 pm–11 pm

Schedule 5: price by hour

July weekday. Summer pricing Jun–Sep; winter Oct–May.

Off-peakMid-peakPeak
8.3¢15.9¢31.3¢8.3¢12a3a6a9a12p3p6p9p12a

Charging an EV on Idaho Power

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Idaho home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
Schedule 1Any$34/mo$34/mo$154/mo
Schedule 512 am$26/mo$45/mo$157/mo

With an EV charged at its best hour, the cheapest plan overall is Schedule 1. Compare plans on your own usage.

How Idaho Power’s plans work

Schedule 1 (Residential Service). In July the first 800 kWh a month cost 13.0¢ each; then 14.2¢ above 800 kWh a month, then 15.6¢ above 2,000 kWh a month. An average Idaho home (1,112 kWh in July) goes past the first tier, so extra load such as an EV is priced higher. Fixed charge: $15.35 a month.

Schedule 5 (Residential Time-of-Day). Mid-peak 3 pm–7 pm, Peak 7 pm–11 pm on July weekdays; 4 of 24 hours carry the top price of 31.3¢. The cheapest July weekday hour costs 8.3¢, so moving 1 kWh out of the top hours saves 23.0¢. January weekdays range from 10.1¢ to 14.8¢. Summer pricing applies Jun–Sep; winter pricing Oct–May. Fixed charge: $15.35 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, Idaho Power billed its residential customers an average of 11.76¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Idaho’s price change since.

Sources for each plan

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Run the numbers on Idaho Power