Know Your Power Bill

Montana utility data · EIA utility 12825

NorthWestern Energy LLC - (MT) residential electricity rate

In finalized 2024 EIA-861 data, NorthWestern Energy LLC - (MT) reported an average 14.23¢ per kWh for bundled residential service in Montana.

2024 EIA bundled residential average

14.23¢ per kWh
Historical annual average—not a current tariff.

EIA derives this average from the utility's reported residential revenue and sales. Your actual rate can differ because of tariffs, fixed charges, taxes, usage tiers, riders, time-of-use pricing, and other bill components.

Residential customers 328,125 2024 bundled service
Annual use per reported customer 8,535 kWh sales ÷ reported customer count
Rate position in Montana #9 of 10 bundled observed providers with at least 1,000 residential customers, lowest rate to highest
Reported service territory 36 counties EIA distribution-territory records

What “bundled” means

Supply and delivery are reported together.

For this page, we only publish a provider headline when EIA reports bundled residential service. That makes this figure more useful than an energy-only or delivery-only component, but it still does not reproduce the provider's current rate schedule.

Data quality

Observed EIA record

This publication-ready page requires the selected provider record to be observed rather than entirely imputed. The underlying source is finalized Form EIA-861 detailed data.

Simple cost examples

What 14.23¢/kWh implies at common usage levels

500 kWh$71
1,000 kWh$142
1,500 kWh$213

These examples are simple usage × annual-average-price calculations. They are not predictions of a NorthWestern Energy LLC - (MT) bill.

Newer state context

Montana's latest monthly residential average is 15.14¢/kWh.

That state figure is from June 2026, while the provider figure above is a 2024 annual EIA average. The periods and populations differ, so this is context rather than a direct price comparison. See the Montana rate page →

Use this historical average

Try 14.23¢/kWh in a calculator

The linked tools will prefill this 2024 provider average as an editable electricity price. It remains a historical estimate—not the provider's current tariff.

Electricity billEstimate a monthly bill from kWhEV chargingUse the provider average for home chargingSpace heaterEstimate heating electricity costAir conditionerEstimate cooling electricity cost

Reported service territory

Counties associated with NorthWestern Energy LLC - (MT) in Montana

Beaverhead CountyBig Horn CountyBlaine CountyBroadwater CountyCarbon CountyCascade CountyChouteau CountyDeer Lodge CountyFergus CountyGallatin CountyGolden Valley CountyGranite CountyHill CountyJefferson CountyJudith Basin CountyLewis and Clark CountyLiberty CountyMadison CountyMeagher CountyMineral CountyMissoula CountyMusselshell CountyPark CountyPhillips CountyPondera CountyPowell CountyRavalli CountyRosebud CountySanders CountySilver Bow CountyStillwater CountySweet Grass CountyTeton CountyValley CountyWheatland CountyYellowstone County

A county appearing in EIA's service-territory file does not mean every address in that county is served by this utility.

Utility details

Investor Owned

EIA utility ID
12825
Balancing authority
NWMT
NERC / RTO
WECC, Alt Fuel Vehicle, Alt Fuel Vehicle 2, Buying Transmission, Distribution, Generation, Other, Retail Marketing, Transmission
Residential sales
2,800,513 MWh