West
Electricity costs in Idaho
Residential customers in Idaho pay an average of 12.35¢ per kWh — 1st cheapest of the 51 states and territories we track, and -33.0% against the national average.
Idaho at a glance
Idaho has some of the cheapest electricity in the country thanks to Columbia River basin hydroelectric generation, which carries almost no fuel cost once built. Retail service is regulated. Drought years that lower reservoir levels are the main risk to those rates. Winters are cold enough to create real heating demand, while dry summers keep cooling load moderate compared with the humid South.
Rate trend
2025-06 to 2026-05 · cents per kWh · 12.07¢ → 12.35¢
What appliances cost to run in Idaho
Ranked by annual cost at typical usage and Idaho’s average rate. Click through for the full calculation and to enter your own usage.
| Appliance | Watts | kWh/yr | Per month | Per year |
|---|---|---|---|---|
| Electric Furnace | 15000W | 14,783 | $152 | $1,826 |
| EV Charger (Level 2) | 7200W | 7,884 | $81.20 | $974 |
| Central Air Conditioner | 3500W | 6,643 | $68.42 | $820 |
| Heat Pump | 2400W | 5,256 | $54.13 | $649 |
| Space Heater | 1500W | 4,380 | $45.11 | $541 |
| Pool Pump | 1500W | 4,380 | $45.11 | $541 |
| Hot Tub | 1500W | 3,285 | $33.83 | $406 |
| Garage Heater | 5000W | 3,285 | $33.83 | $406 |
| Tankless Water Heater | 18000W | 2,628 | $27.07 | $325 |
| Electric Baseboard Heater | 1250W | 2,555 | $26.32 | $316 |
| Electric Water Heater | 4000W | 1,971 | $20.30 | $243 |
| Window Air Conditioner | 900W | 1,840 | $18.95 | $227 |
| Dehumidifier | 500W | 1,314 | $13.53 | $162 |
| Electric Clothes Dryer | 3000W | 931 | $9.59 | $115 |
| Slow Cooker | 200W | 584 | $6.01 | $72.12 |
| Chest Freezer | 200W | 526 | $5.41 | $64.91 |
| Electric Oven | 2400W | 526 | $5.41 | $64.91 |
| Electric Stovetop | 2000W | 511 | $5.26 | $63.11 |
| Refrigerator | 150W | 460 | $4.74 | $56.80 |
| Desktop Computer | 200W | 409 | $4.21 | $50.49 |
| Electric Lawn Mower | 1200W | 329 | $3.38 | $40.57 |
| Well Pump | 750W | 274 | $2.82 | $33.81 |
| Air Fryer | 1500W | 219 | $2.26 | $27.05 |
| Box Fan | 75W | 219 | $2.26 | $27.05 |
| Dishwasher | 1200W | 219 | $2.26 | $27.05 |
| Microwave | 1100W | 201 | $2.07 | $24.79 |
| Television | 100W | 183 | $1.88 | $22.54 |
| Ceiling Fan | 60W | 175 | $1.80 | $21.64 |
| Coffee Maker | 900W | 164 | $1.69 | $20.28 |
| Gaming Console | 150W | 164 | $1.69 | $20.28 |
| Electric Pressure Cooker | 1000W | 146 | $1.50 | $18.03 |
| Toaster Oven | 1400W | 123 | $1.26 | $15.15 |
| Laptop | 60W | 123 | $1.26 | $15.15 |
| Computer Monitor | 35W | 102 | $1.05 | $12.62 |
| Clothes Iron | 1100W | 100 | $1.03 | $12.40 |
| WiFi Router | 10W | 88 | $0.90 | $10.82 |
| Sump Pump | 800W | 88 | $0.90 | $10.82 |
| Washing Machine | 500W | 73 | $0.75 | $9.02 |
| Phone Charger | 6W | 7 | $0.07 | $0.81 |
| Printer | 50W | 5 | $0.05 | $0.56 |
These use typical wattages and usage hours, at Idaho’s state average rate. Your own utility tariff, any time-of-use pricing and fixed service charges will shift the real figure. See our methodology.