MT · May 2026

Montana electricity cost calculator

Average residential electricity rate: 14.67¢/kWh — 20.4% below the U.S. average and #13 from lowest to highest among the 50 states in this snapshot.

Electricity cost calculator

What does it cost to run?

Power draw (watts)Hours per dayDays usedStateElectricity rate (¢/kWh)

Energy180.00 kWh

Cost for 30 days$26.41

Per day$0.88

Annualized$321.27

Uses the selected state's latest EIA residential average unless you enter your own utility rate. Taxes, fixed charges, tiers and time-of-use pricing are not included.

Common examples

What typical devices cost at Montana's average rate

Space heater1,500 W · 4 h/day · 30 days$26.41

Gaming PC500 W · 6 h/day · 30 days$13.20

Window AC900 W · 8 h/day · 30 days$31.69

Refrigerator150 W · 8 h/day · 30 days$5.28

Clothes dryer3,000 W · 0.75 h/day · 12 days$3.96

These are adjustable examples, not measured product data. Use the calculator above for your own device.

About this rate

This page uses the latest available EIA statewide residential average as a starting point. Your actual electricity price can be different because of your utility, plan, taxes, fixed charges, usage tiers, season and time-of-use pricing. For the best estimate, replace the rate in the calculator with the cents-per-kWh value from your own bill.