Electricity rates in Idaho
Calculate your cost
Leave empty to use the official price for United States: 18.16¢/kWh (August 2026).
Tariff and voltage
At 120 V it draws about 12.5 A. Voltage changes the current (amps), not the cost.
Results
Per hour: $0.20, Per day: $1.60, Per month: $48.77
- Per hour
- $0.20
- Per day
- $1.60
- Per month
- $48.77
- Per year
- $585.61
1.5 kWh per hour · 12 kWh per day
Based on 1,500 W for 8 h a day, 30.4 days a month, at 13.37¢/kWh.
On slab (tiered) tariffs, use the price of the highest slab your bill reaches: that's what each extra unit really costs.
What appliances cost to run in Idaho
| Appliance | Typical use | Per hour | Per day | Per month |
|---|---|---|---|---|
| Heat pump | 2,000 W, 24 h a day | $0.13 | $3.21 | $97.55 |
| Space heater | 1,500 W, 8 h a day | $0.20 | $1.60 | $48.77 |
| Electric water heater | 4,000 W, 3 h a day | $0.53 | $1.60 | $48.77 |
| Pool pump | 1,500 W, 6 h a day | $0.20 | $1.20 | $36.58 |
| Hot tub | 5,500 W, 24 h a day | $0.04 | $0.88 | $26.83 |
| Oil-filled radiator | 1,500 W, 8 h a day | $0.10 | $0.80 | $24.39 |
| Air conditioner | 1,000 W, 8 h a day | $0.08 | $0.64 | $19.51 |
| Clothes dryer | 3,000 W, 1 h a day | $0.32 | $0.32 | $9.75 |
| Dehumidifier | 300 W, 8 h a day | $0.04 | $0.32 | $9.75 |
| Gaming PC | 400 W, 4 h a day | $0.05 | $0.21 | $6.50 |
| Air cooler | 200 W, 8 h a day | $0.03 | $0.21 | $6.50 |
| Electric shower | 9,500 W, 0.13 h a day | $1.27 | $0.17 | $5.14 |
| Refrigerator | 150 W, 24 h a day | $0.01 | $0.17 | $5.12 |
| Water dispenser | 450 W, 24 h a day | $0.01 | $0.16 | $4.87 |
| Kotatsu | 600 W, 5 h a day | $0.02 | $0.12 | $3.66 |
| Water pump | 750 W, 1 h a day | $0.10 | $0.10 | $3.05 |
| Home UPS or inverter | 30 W, 24 h a day | $0.004 | $0.10 | $2.93 |
| Electric blanket | 150 W, 8 h a day | $0.01 | $0.08 | $2.44 |
| Christmas lights | 100 W, 6 h a day | $0.01 | $0.08 | $2.44 |
| Ceiling fan | 60 W, 10 h a day | $0.01 | $0.08 | $2.44 |
| Game console | 200 W, 3 h a day | $0.03 | $0.08 | $2.44 |
| Washing machine | 2,000 W, 1 h a day | $0.07 | $0.07 | $2.03 |
| TV | 80 W, 5 h a day | $0.01 | $0.05 | $1.63 |
| Hair dryer | 1,800 W, 0.17 h a day | $0.24 | $0.04 | $1.22 |
| Electric kettle | 2,000 W, 0.15 h a day | $0.27 | $0.04 | $1.22 |
| Microwave | 1,200 W, 0.25 h a day | $0.16 | $0.04 | $1.22 |
| Air fryer | 1,700 W, 0.5 h a day | $0.08 | $0.04 | $1.21 |
| Rice cooker | 500 W, 0.5 h a day | $0.07 | $0.03 | $1.02 |
| Wi-Fi router | 10 W, 24 h a day | $0.0013 | $0.03 | $0.98 |
About electricity rates in Idaho
Idaho has a regulated market with no retail choice. Idaho Power serves the southern part of the state including Boise, Avista serves the northern panhandle, Rocky Mountain Power serves the east, and cooperatives and municipal utilities cover the remaining areas. The Idaho Public Utilities Commission sets rates for the investor-owned utilities.
Hydroelectric dams on the Snake River and other rivers have long been the backbone of generation, supplemented by natural gas, wind, solar and coal power from plants in neighboring states. Summer irrigation pumping and air-conditioning create a summer peak, and electric heating is fairly common in winter, so the major utilities use seasonal rates that change between summer and the rest of the year. Rooftop solar crediting has moved away from full retail net metering for new customers.