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Montana electric bills: $122/month (August 2026)

Updated with August 2026 data · Editor: Otto Pop · Methodology

$122/month
Average residential electric bill, Montana, August 2026
15.57¢/kWh · 784 kWh/month · rank 3 of 51 (1 = cheapest)
12-month average: $115/month (12 months to August 2026)
Source: EIA, Aug 2026

Montana households paid an average of $122 a month for electricity in August 2026, based on U.S. Energy Information Administration data. That is 4.3% higher than August 2025, and it ranks Montana 3rd of 51 from the lowest average bill.

How much is the average electric bill in Montana?

Montana homes used 784 kWh in August 2026, below the U.S. average of 1,152 kWh, at 15.57¢/kWh. The result, an average bill of $122, was one of the lowest average bills in the country. Try your own numbers below.

Estimated bill: $122 a month, $1,464 a year if every month matched this one

Defaults are the Montana averages for August 2026 (EIA). Use changes with the seasons: the actual average bills for the 12 months to August 2026 added up to $1,382. Enter the use and price from your own bill for a personal estimate. EIA's average price already spreads fixed customer charges across every kWh; your utility's own fixed charge and rate plan can differ.

How have Montana electricity prices changed?

Montana's price went from 11.82¢/kWh in September 2021 to 15.57¢/kWh, 31.7% higher. It was lowest at 10.38¢/kWh in February 2022 and highest at 15.57¢/kWh in August 2026.

Average residential electricity price in Montana, last 12 months
12.4¢13.3¢14.2¢15.0¢15.9¢Sep 2025Dec 2025Mar 2026Jun 2026
Show the numbers
Average residential electricity price in Montana, last 12 months
MonthValue
Sep 202514.64¢/kWh
Oct 202514.27¢/kWh
Nov 202512.82¢/kWh
Dec 202512.78¢/kWh
Jan 202612.85¢/kWh
Feb 202613.32¢/kWh
Mar 202613.47¢/kWh
Apr 202613.90¢/kWh
May 202614.67¢/kWh
Jun 202615.14¢/kWh
Jul 202614.99¢/kWh
Aug 202615.57¢/kWh

Source: EIA, residential electricity data, Sep 2025–Aug 2026

Average residential electricity price in Montana, last 5 years
9.8¢11.4¢13.0¢14.6¢16.2¢Sep 2021Sep 2022Sep 2023Sep 2024Sep 2025
Show the numbers
Average residential electricity price in Montana, last 5 years
MonthValue
Sep 202111.82¢/kWh
Oct 202111.71¢/kWh
Nov 202111.38¢/kWh
Dec 202111.12¢/kWh
Jan 202210.63¢/kWh
Feb 202210.38¢/kWh
Mar 202210.71¢/kWh
Apr 202210.96¢/kWh
May 202211.17¢/kWh
Jun 202211.56¢/kWh
Jul 202211.66¢/kWh
Aug 202211.53¢/kWh
Sep 202211.70¢/kWh
Oct 202212.42¢/kWh
Nov 202212.23¢/kWh
Dec 202211.77¢/kWh
Jan 202311.89¢/kWh
Feb 202311.96¢/kWh
Mar 202312.13¢/kWh
Apr 202312.26¢/kWh
May 202312.79¢/kWh
Jun 202313.16¢/kWh
Jul 202313.07¢/kWh
Aug 202312.93¢/kWh
Sep 202313.15¢/kWh
Oct 202312.93¢/kWh
Nov 202312.58¢/kWh
Dec 202312.58¢/kWh
Jan 202411.97¢/kWh
Feb 202411.95¢/kWh
Mar 202412.20¢/kWh
Apr 202412.50¢/kWh
May 202413.24¢/kWh
Jun 202413.56¢/kWh
Jul 202413.42¢/kWh
Aug 202413.28¢/kWh
Sep 202413.45¢/kWh
Oct 202413.32¢/kWh
Nov 202412.51¢/kWh
Dec 202411.88¢/kWh
Jan 202511.40¢/kWh
Feb 202511.61¢/kWh
Mar 202511.95¢/kWh
Apr 202512.33¢/kWh
May 202512.88¢/kWh
Jun 202514.95¢/kWh
Jul 202514.28¢/kWh
Aug 202514.29¢/kWh
Sep 202514.64¢/kWh
Oct 202514.27¢/kWh
Nov 202512.82¢/kWh
Dec 202512.78¢/kWh
Jan 202612.85¢/kWh
Feb 202613.32¢/kWh
Mar 202613.47¢/kWh
Apr 202613.90¢/kWh
May 202614.67¢/kWh
Jun 202615.14¢/kWh
Jul 202614.99¢/kWh
Aug 202615.57¢/kWh

Source: EIA, residential electricity data, Sep 2021–Aug 2026

How does Montana compare with other states?

Montana ranked 3rd of 51, 41.6% lower than the U.S. average of $209 in August 2026. Wyoming averaged $118 and Idaho $137.

RankStateAvg. bill¢/kWhkWh/month
1Wyoming$11814.43821
2Washington$12014.63819
3Montana$12215.57784
4North Dakota$13013.31979
5Oregon$13515.92847
6Idaho$13713.371,026
…
47Oklahoma$25114.821,696
48Alabama$25416.331,555
49Texas$26615.911,670
50Arizona$26915.051,789
51Hawaii$26947.18570

1 = lowest average monthly bill. 50 states and DC.

StateAvg. bill¢/kWhvs. Montana
Montana$12215.57—
Idaho$13713.37+12.3%
North Dakota$13013.31+6.6%
South Dakota$16015.15+31.1%
Wyoming$11814.43-3.3%

What is behind Montana's electric bills?

  • Seasonal range: the highest monthly average in the last year was $141 in January 2026, the lowest $95 in October 2025.
  • But up from last year: the bill was 4.3% higher than August 2025.
  • Annual total: $1,382.

Frequently asked questions

How much is the average electric bill in Montana?

The average residential electric bill in Montana was $122 a month in August 2026, based on EIA data. That assumes the state's average use of 784 kWh at 15.57¢/kWh. Because use changes with the seasons, the average over the 12 months to August 2026 is a steadier guide: $115 a month.

How much does electricity cost in Montana?

Residential customers in Montana paid an average of 15.57¢/kWh in August 2026, 9% higher than a year earlier.

Is electricity in Montana more expensive than the U.S. average?

In August 2026 the average Montana electric bill was $122, 41.6% lower than the U.S. average of $209. Montana ranked 3rd of 51 from the lowest average bill (the 50 states and the District of Columbia).

How much electricity does a typical Montana home use?

A typical residential customer in Montana used 784 kWh in August 2026, calculated as total residential sales divided by the number of residential customers reported to EIA.

How much does a Montana household spend on electricity in a year?

Adding up the last 12 monthly average bills gives about $1,382 a year for a typical Montana household (12 months to August 2026). The highest month was January 2026 at $141; the lowest was October 2025 at $95.

Methodology, sources and updates

The average bill is the EIA average residential price multiplied by average monthly use per residential customer. EIA's price is residential revenue divided by kWh sold, so the fixed customer charges utilities bill are already spread across every kWh; your own fixed charge, rate plan and taxes can differ. Read the full methodology.

  • — Updated with EIA data for August 2026.
  • — Updated with EIA residential retail sales data for July 2026.

General information based on public data, not financial advice. Your own bill depends on your utility, rate plan, fixed charge, use and any taxes added to it. Spotted an error? Tell us and we will correct it publicly.