Idaho Power peak and off-peak hours
What are Idaho Power’s peak hours?
It depends on the plan. Schedule 5: Mid-peak 3 pm–7 pm, Peak 7 pm–11 pm, every day, in summer (in winter: Peak 6 am–9 am, Peak 5 pm–8 pm). Hours are local clock time.
When is electricity cheapest on Idaho Power?
On summer weekdays the lowest price is Schedule 5: 11 pm–3 pm next day at 8.3¢/kWh, against 31.3¢ at the peak. Schedule 1 charges the same price at every hour.
Which Idaho Power plan is cheapest?
For a typical Idaho home using 906 kWh a month, Schedule 1 at about $121 a month (13.4¢/kWh all-in, before taxes). With an EV charged at its cheapest hour, Schedule 1 gives the lowest total.
Peak and off-peak hours of every utility
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.
| Plan | Best start | Charging, best start | Charging from 6 pm | Whole bill with EV |
|---|
| Schedule 1 | Any | $34/mo | $34/mo | $155/mo |
| Schedule 5 | 12 am | $26/mo | $45/mo | $158/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 11.78¢ per kWh in 2025 (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.