Appliance Electricity Costs in Montana

These estimates use May 2026 EIA residential electricity rates for Montana: 14.67 cents/kWh.

ApplianceTypical wattsHours/dayMonthly cost
Space Heater1,500 W4$26.41
Oil-Filled Radiator1,200 W5$26.41
Electric Fireplace1,500 W4$26.41
Window AC900 W8$31.69
Portable AC1,200 W8$42.25
Central AC3,500 W6$92.42
Mini Split Heat Pump1,200 W8$42.25
Ceiling Fan50 W12$2.64
Box Fan75 W12$3.96
Dehumidifier600 W12$31.69
Humidifier80 W8$2.82
Air Purifier50 W24$5.28
Hot Tub4,500 W2$39.61
Pool Pump1,500 W8$52.81
Aquarium Heater150 W24$15.84
Aquarium Filter20 W24$2.11
LED Grow Light300 W12$15.84
Incandescent Light Bulb60 W5$1.32
LED Light Bulb10 W5$0.22
Christmas Lights150 W6$3.96
EV Level 1 Charger1,400 W8$49.29
EV Level 2 Charger7,200 W3$95.06
Electric Bike Charger250 W3$3.30
Refrigerator150 W24$15.84
Chest Freezer120 W24$12.67
Upright Freezer180 W24$19.01
Dishwasher1,500 W1$6.60
Electric Oven3,000 W1$13.20
Toaster Oven1,200 W0.5$2.64
Microwave1,100 W0.25$1.21
Coffee Maker1,000 W0.3$1.32
Electric Kettle1,500 W0.2$1.32
Slow Cooker250 W8$8.80
Air Fryer1,500 W0.5$3.30
Instant Pot1,000 W0.7$3.08
Clothes Dryer4,000 W1$17.60
Washing Machine700 W0.5$1.54
Clothes Iron1,200 W0.3$1.58
Hair Dryer1,600 W0.2$1.41
Electric Water Heater4,500 W3$59.41
Tankless Electric Water Heater12,000 W0.5$26.41
Well Pump1,000 W1$4.40
Sump Pump800 W0.5$1.76
Garage Door Opener500 W0.1$0.22
Security Camera6 W24$0.63
Wi-Fi Router12 W24$1.27
Cable Box25 W24$2.64
Gaming PC600 W4$10.56
Desktop Computer200 W8$7.04
Laptop60 W8$2.11
Computer Monitor40 W8$1.41
LED TV120 W5$2.64
Game Console160 W4$2.82
Printer30 W0.5$0.07
Phone Charger10 W3$0.13
Heated Blanket120 W8$4.22
Electric Mattress Pad80 W8$2.82
CPAP Machine60 W8$2.11
Treadmill800 W1$3.52
Electric Sauna6,000 W1$26.41