Idaho electricity rates and bills

Still among the cheapest, but rising faster than most

Over the 12 months to August 2026, Idaho homes paid an average of 12.77¢ per kWh, 29.2% below the US average and 5.27¢ per kWh less than the US average. Average revenue per kWh here means what residential customers paid in total, fixed charges and riders included, divided by the electricity they used. Among its 6 neighbors, Utah had the lowest 12-month average, 13.26¢ per kWh against Idaho's 12.77¢, and Oregon the highest at 15.53¢ per kWh¹.

North Dakota 12.35¢Hawaii 44.27¢

Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Each dot is a state. Residential revenue divided by kilowatt-hours sold over the 12 months 2025-09 to 2026-08 (EIA-861M; months since January 2026 preliminary). Average revenue per kWh, all charges included; not a tariff. Period: September 2025 to August 2026.

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State	Residential ¢/kWh, 12 months
Hawaii	44.27¢
California	32.34¢
Massachusetts	30.39¢
Maine	29.60¢
Rhode Island	29.44¢
New York	28.60¢
Connecticut	27.42¢
New Hampshire	26.95¢
Alaska	26.94¢
District of Columbia	24.48¢
Vermont	23.90¢
New Jersey	23.74¢
Michigan	21.28¢
Maryland	21.18¢
Pennsylvania	20.86¢
Illinois	18.91¢
Wisconsin	18.79¢
Ohio	18.41¢
Delaware	17.98¢
Indiana	16.90¢
Virginia	16.64¢
Colorado	16.61¢
Alabama	16.44¢
Minnesota	16.28¢
Texas	15.98¢
South Carolina	15.77¢
Oregon	15.53¢
West Virginia	15.53¢
Florida	15.41¢
Arizona	15.39¢
New Mexico	15.31¢
Georgia	15.17¢
Kansas	15.13¢
Mississippi	14.85¢
North Carolina	14.79¢
South Dakota	14.28¢
Iowa	14.20¢
Washington	14.20¢
Wyoming	14.01¢
Missouri	13.97¢
Kentucky	13.94¢
Montana	13.94¢
Oklahoma	13.81¢
Tennessee	13.61¢
Arkansas	13.57¢
Nevada	13.45¢
Utah	13.26¢
Louisiana	13.02¢
Idaho	12.77¢
Nebraska	12.74¢
North Dakota	12.35¢

The increase has been faster than the national one. The 12-month average was +9.8% against the 12 months before, the 11th highest increase among the states, while the US average rose 6.5%. The year so far looks similar: January through August 2026 averaged 13.02¢ per kWh, +11.8% on the same months of the year before. In the single month of August 2026, the residential price was 13.37¢ per kWh, +10.7% against 12.08¢ per kWh a year earlier (5th lowest¹ among the states that month). Monthly figures since January 2026 are preliminary.

IdahoUnited States

Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Average revenue per kWh (all charges, nominal dollars), each month; summer and winter months differ by season. Monthly EIA data through August 2026 (released October 23, 2026); months since January 2026 are preliminary.

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Period	Idaho (¢/kWh)	United States (¢/kWh)
Jan 2022	9.85¢	13.64¢
Feb 2022	9.71¢	13.76¢
Mar 2022	10.02¢	14.41¢
Apr 2022	9.82¢	14.57¢
May 2022	10.25¢	14.89¢
Jun 2022	11.32¢	15.30¢
Jul 2022	11.18¢	15.31¢
Aug 2022	10.73¢	15.82¢
Sep 2022	10.47¢	16.19¢
Oct 2022	11.19¢	15.99¢
Nov 2022	9.98¢	15.55¢
Dec 2022	10.47¢	14.94¢
Jan 2023	10.51¢	15.47¢
Feb 2023	10.19¢	15.98¢
Mar 2023	10.03¢	16.04¢
Apr 2023	10.18¢	16.10¢
May 2023	10.72¢	16.14¢
Jun 2023	11.71¢	16.09¢
Jul 2023	11.76¢	15.86¢
Aug 2023	11.56¢	15.91¢
Sep 2023	11.53¢	16.27¢
Oct 2023	12.07¢	16.48¢
Nov 2023	11.48¢	16.19¢
Dec 2023	11.53¢	15.69¢
Jan 2024	10.71¢	15.41¢
Feb 2024	11.18¢	16.10¢
Mar 2024	10.99¢	16.67¢
Apr 2024	11.37¢	16.86¢
May 2024	11.48¢	16.40¢
Jun 2024	12.20¢	16.38¢
Jul 2024	12.17¢	16.62¢
Aug 2024	12.04¢	16.60¢
Sep 2024	12.36¢	16.82¢
Oct 2024	12.20¢	17.09¢
Nov 2024	11.28¢	16.85¢
Dec 2024	10.95¢	16.27¢
Jan 2025	10.83¢	15.92¢
Feb 2025	10.96¢	16.40¢
Mar 2025	11.58¢	17.03¢
Apr 2025	11.90¢	17.20¢
May 2025	11.89¢	17.33¢
Jun 2025	12.12¢	17.44¢
Jul 2025	12.28¢	17.39¢
Aug 2025	12.08¢	17.57¢
Sep 2025	12.50¢	18.05¢
Oct 2025	12.46¢	17.95¢
Nov 2025	12.25¢	17.77¢
Dec 2025	11.88¢	17.11¢
Jan 2026	12.06¢	17.45¢
Feb 2026	12.63¢	17.65¢
Mar 2026	13.00¢	18.60¢
Apr 2026	12.70¢	18.86¢
May 2026	12.35¢	18.44¢
Jun 2026	14.37¢	18.34¢
Jul 2026	13.73¢	18.31¢
Aug 2026	13.37¢	18.16¢

Idaho Power, Avista and the smaller utilities

Idaho has no retail choice: 0.0% of homes bought from a competitive supplier in 2025. The company that delivers the power also supplies it, and the address decides which one that is. EIA lists 30 utilities selling to Idaho homes, but two of them carry most customers. Idaho Power had 63.4% of the state's residential customers in 2025, in 24 counties that include Ada and Canyon. Avista served 15.2%, in 9⁴ counties, and PacifiCorp 8.9%. Kootenai Electric Cooperative (3.6%) and the City of Idaho Falls (3.5%³) were the next largest.

The two large companies averaged almost the same in 2025: Idaho Power 11.78¢ per kWh and Avista 11.84¢ per kWh. Among US utilities with 100,000 or more residential customers, Idaho Power ranked 12th lowest of 177 and Avista 13th lowest of 177. The wider spread is among the smaller ones. Of the 7 utilities with 10,000 or more residential customers, the City of Idaho Falls, a municipal utility, had the lowest average at 9.60¢ per kWh and PacifiCorp the highest at 13.53¢ per kWh, a spread of 3.93¢ per kWh. By ownership, investor-owned utilities averaged 11.97¢ per kWh, the 9 cooperatives 11.81¢ per kWh and public power 9.60¢ per kWh³.

City of Idaho Falls9.60¢

Fall River Rural Electric Cooperative11.11¢

Idaho Power11.78¢

Idaho average11.83¢

Avista11.84¢

Northern Lights12.17¢

Kootenai Electric Cooperative13.44¢

PacifiCorp13.53¢

Source: EIA-861 annual electric power industry report, 2025 final. Utilities with 10,000 or more bundled (full-service) residential customers. Revenue divided by kWh sold, all charges included, EIA-861 2025 final. Darker bars have their own page.

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Utility	¢/kWh
City of Idaho Falls	9.60¢
Fall River Rural Electric Cooperative	11.11¢
Idaho Power	11.78¢
Idaho average	11.83¢
Avista	11.84¢
Northern Lights	12.17¢
Kootenai Electric Cooperative	13.44¢
PacifiCorp	13.53¢

Regulation differs with ownership. The Idaho Public Utilities Commission regulates investor-owned utilities such as Idaho Power; it does not regulate cooperatives or utilities run by cities, which set rates through their own boards and councils.

Questions such as "which electric company serves Boise, Meridian or Burley" have no city-level answer in EIA's data, which records service by county. In 29 of Idaho's 44 counties two or more distribution utilities report service; Minidoka County has the most, with 9⁴. The utility's own service map settles any address.

Idaho Power only (of these)Avista only (of these)Two or more of themOther utilities only

Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. Counties where each utility reports serving customers (EIA-861 service territory, 2025). A utility often serves only part of a county, and several can share one: the map shows where each one is present, not street-level boundaries. Point at a county for every utility listed there.

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County	Utilities reporting service
Ada County	Idaho Power
Adams County	Idaho Power
Bannock County	Idaho Power, PacifiCorp
Bear Lake County	PacifiCorp
Benewah County	Avista, Kootenai Electric Cooperative, Clearwater Power Company, Inland Power & Light Company, City of Plummer
Bingham County	Idaho Power, PacifiCorp
Blaine County	Idaho Power, Lost River Electric Cooperative, Salmon River Electric Cooperative
Boise County	Idaho Power
Bonner County	Avista, Kootenai Electric Cooperative, Northern Lights, Inland Power & Light Company
Bonneville County	PacifiCorp, City of Idaho Falls, Lower Valley Energy
Boundary County	Northern Lights, City of Bonners Ferry
Butte County	PacifiCorp, Lost River Electric Cooperative
Camas County	Idaho Power
Canyon County	Idaho Power
Caribou County	PacifiCorp, City of Soda Springs, Lower Valley Energy
Cassia County	Idaho Power, City of Burley, United Electric Co-op, Raft Rural Electric Cooperative, South Side Electric, East End Mutual Electric Co Ltd, City of Albion, City of Declo
Clark County	PacifiCorp, Fall River Rural Electric Cooperative, Vigilante Electric Cooperative
Clearwater County	Avista, Clearwater Power Company
Custer County	Lost River Electric Cooperative, Salmon River Electric Cooperative
Elmore County	Idaho Power
Franklin County	PacifiCorp
Fremont County	PacifiCorp, Fall River Rural Electric Cooperative
Gem County	Idaho Power
Gooding County	Idaho Power
Idaho County	Idaho Power, Avista, Clearwater Power Company, Idaho County L&P Cooperative Association, Missoula Electric Cooperative
Jefferson County	PacifiCorp, Fall River Rural Electric Cooperative
Jerome County	Idaho Power
Kootenai County	Avista, Kootenai Electric Cooperative, Northern Lights, Inland Power & Light Company
Latah County	Avista, Clearwater Power Company
Lemhi County	Idaho Power, Salmon River Electric Cooperative
Lewis County	Avista, Clearwater Power Company, Idaho County L&P Cooperative Association
Lincoln County	Idaho Power
Madison County	PacifiCorp, Fall River Rural Electric Cooperative
Minidoka County	Idaho Power, City of Burley, United Electric Co-op, City of Rupert, City of Heyburn, East End Mutual Electric Co Ltd, Riverside Electric Cooperative, Farmers Electric Company, Ltd, City of Minidoka
Nez Perce County	Avista, Clearwater Power Company
Oneida County	Idaho Power, PacifiCorp, Raft Rural Electric Cooperative
Owyhee County	Idaho Power, Raft Rural Electric Cooperative
Payette County	Idaho Power
Power County	Idaho Power, PacifiCorp, Raft Rural Electric Cooperative
Shoshone County	Avista, Clearwater Power Company
Teton County	PacifiCorp, Fall River Rural Electric Cooperative
Twin Falls County	Idaho Power
Valley County	Idaho Power
Washington County	Idaho Power, City of Weiser

South peaks in summer, north in winter

Statewide, use per home over the last 12 months peaked at 1,183 kWh in January 2026 and fell to 737 kWh in October 2025, a ratio of 1.6 times¹. Idaho is cold: 6,782 heating degree days a year on average (10th highest among the states with data) against 513 cooling degree days (11th lowest⁶), and 36.7%⁷ of homes heat mainly with electricity.

The statewide line hides two different patterns. Idaho Power's customers used the most in July 2026, 1,184 kWh on a $165.50 average bill, and the least in April 2026 (705 kWh). Avista's Idaho customers peaked in January 2026 at 1,217 kWh, with a $145.32 bill, and used least in June 2026 (655 kWh⁸). Both series cover the last 12 months, with 2026 months preliminary.

777Sep

714Oct

804Nov

996Dec

1,116Jan

858Feb

777Mar

705Apr

731May

808Jun

1,184Jul

1,078Aug

Source: EIA-861M monthly sales and revenue by utility. kWh per residential customer in each month (EIA-861M; months since January 2026 preliminary). The table adds the average bill and price for the month.

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Month	kWh per customer	Bill per customer	¢/kWh
September 2025	777	$94.92	12.22¢
October 2025	714	$84.73	11.86¢
November 2025	804	$99.64	12.40¢
December 2025	996	$122.23	12.27¢
January 2026	1,116	$139.36	12.49¢
February 2026	858	$114.70	13.37¢
March 2026	777	$106.01	13.64¢
April 2026	705	$90.53	12.83¢
May 2026	731	$87.55	11.98¢
June 2026	808	$120.07	14.86¢
July 2026	1,184	$165.50	13.98¢
August 2026	1,078	$146.24	13.57¢

736Sep

686Oct

928Nov

1,058Dec

1,217Jan

910Feb

921Mar

728Apr

700May

655Jun

918Jul

862Aug

Source: EIA-861M monthly sales and revenue by utility. kWh per residential customer in each month (EIA-861M; months since January 2026 preliminary). The table adds the average bill and price for the month.

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Month	kWh per customer	Bill per customer	¢/kWh
September 2025	736	$92.74	12.61¢
October 2025	686	$90.73	13.23¢
November 2025	928	$116.56	12.56¢
December 2025	1,058	$130.93	12.38¢
January 2026	1,217	$145.32	11.94¢
February 2026	910	$113.85	12.50¢
March 2026	921	$118.76	12.90¢
April 2026	728	$93.15	12.80¢
May 2026	700	$94.23	13.46¢
June 2026	655	$90.39	13.79¢
July 2026	918	$119.44	13.01¢
August 2026	862	$113.79	13.19¢

The price per kWh moved with the calendar as well, from 11.88¢ per kWh in December 2025 to 14.37¢ per kWh in June 2026¹.

A small bill because of the price, not low use

The average Idaho home used 933 kWh a month in 2025, more than the US average of 874 kWh (23rd highest among the states). The bill was still $110.36, the 4th lowest in the country. It rose only 1.5% from 2024, the 5th lowest change, against 5.9%² nationally. The higher prices of the last year show in the 12-month average of $115.78, and in August 2026 the average bill was $137.11 on 1,026 kWh¹.

Households' own reports agree. In the Census Bureau's 2025 American Community Survey, 37.4% of Idaho households paying for electricity said their bill was under $100 for an average month (4th highest among the states), against 23.0% nationally, and 12.6% paid $250 or more (margin of error ±0.7 percentage points), the 2nd lowest⁹ share. These are estimates of recalled bills, taxes included.

Under $50$50–99$100–149$150–199$200–249$250 or more

Idaho

United States

Source: Census Bureau, American Community Survey 2025 1-year estimates, table B25132. Households charged for electricity, by the cost they reported for the previous month (American Community Survey 2025, 1-year). Interviews run all year, so this is a typical month, recalled by the household; households whose electricity is included in rent are left out.

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	Under $50	$50–99	$100–149	$150–199	$200–249	$250 or more
Idaho	8.0%	29.4%	25.5%	15.3%	9.1%	12.6%
United States	5.2%	17.9%	20.7%	16.7%	13.0%	26.6%

Hydropower leads, with a smaller share than in 2015

Hydroelectric dams produced 43.6% of Idaho's electricity in 2025, the 4th highest share among the states, against 5.5% nationally. Natural gas followed at 31.4%, then wind at 13.9% and solar at 8.0%. Coal and nuclear power each rounded to 0.0% of generation in 2025, and renewables together supplied 68.4% (4th highest¹⁰).

The mix has shifted since 2015. Hydropower's share fell 12.3 percentage points from 55.9%, while natural gas gained 7.1 percentage points and solar 8.0 percentage points. In-state plants generated the equivalent of 76% of Idaho's retail sales in 2025, the 8th lowest¹⁰ ratio, so the rest comes from plants outside the state.

Natural gasCoalNuclearHydroWindSolarPetroleumOther

Idaho, 2025

Idaho, 2015

United States, 2025

Source: EIA, Net generation by state by type of producer by energy source. Share of net generation by all power plants located in the state (utilities and independent producers), by energy source. Electricity crosses state lines, so this is what the state produces, not exactly what its customers consume. Pumped storage is a net user of power and is left out.

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	Natural gas	Coal	Nuclear	Hydro	Wind	Solar	Petroleum	Other
Idaho, 2025	31.4%	0.0%	0.0%	43.6%	13.9%	8.0%	0.0%	3.0%
Idaho, 2015	24.3%	0.5%	0.0%	55.9%	14.5%	0.0%	0.0%	4.8%
United States, 2025	40.9%	16.6%	17.7%	5.5%	10.4%	6.8%	0.4%	1.7%

Prices since 2001

Idaho homes paid 6.01¢ per kWh¹¹ in 2001 and 11.83¢ per kWh in 2025, a rise of 96.8%, close to the US increase of 100.8%. The last decade was slower: from 2015 to 2025 Idaho's price rose 19.1% (tied for 6th lowest among the states), while the US average rose 36.2%. The annual price went up in 19 of the years since 2002 and last fell in 2019. From 2024 to 2025 it rose 2.7%¹²; the faster increases described above came after that.

IdahoUnited States

Source: EIA, Historical state data, annual sales, revenue and customers; EIA, Historical state data, monthly sales and revenue 1990-2009. Average revenue per kWh (all charges, nominal dollars), each calendar year: 2010 onward EIA-861 final annual data, 2001–2009 the sum of the monthly survey.

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Period	Idaho (¢/kWh)	United States (¢/kWh)
2001	6.01¢	8.58¢
2002	6.59¢	8.44¢
2003	6.24¢	8.72¢
2004	6.10¢	8.95¢
2005	6.29¢	9.45¢
2006	6.21¢	10.40¢
2007	6.36¢	10.65¢
2008	6.99¢	11.26¢
2009	7.80¢	11.51¢
2010	7.99¢	11.54¢
2011	7.87¢	11.72¢
2012	8.67¢	11.88¢
2013	9.32¢	12.13¢
2014	9.72¢	12.52¢
2015	9.93¢	12.65¢
2016	9.95¢	12.55¢
2017	10.04¢	12.89¢
2018	10.15¢	12.87¢
2019	9.89¢	13.01¢
2020	9.95¢	13.15¢
2021	10.16¢	13.66¢
2022	10.37¢	15.04¢
2023	11.05¢	16.00¢
2024	11.52¢	16.48¢
2025	11.83¢	17.23¢

Businesses: low bills, a jump in the latest month

Idaho's commercial customers averaged $435.54 a month in 2025 and industrial customers $2,153.44, the 2nd lowest and 2nd lowest² in the country. Over the last 12 months the commercial price was 9.62¢ per kWh, 30.6% below the US average, and the industrial price 8.13¢ per kWh, 8.8% below the US average. Both rose less than the residential price over those 12 months (+4.7% and +4.5%). The single month of August 2026 was different: the commercial price was +14.1% on a year earlier, the 4th highest change among the states, and the industrial price +12.1%¹. One preliminary month is not a trend.

Outages, meters and rooftop solar

Idaho customers averaged 322 minutes without power in 2025 counting major events, the 16th highest total among the states, and 149 minutes excluding them, with 1.16 interruptions per customer. The two large utilities differed sharply: Avista's Idaho customers averaged 973 minutes including major events and 208 minutes without them, Idaho Power's 171 minutes and 141 minutes¹³.

Advanced meters read 82.2% of Idaho's residential accounts in 2025; Idaho Power reported 99.8%; Avista reported 0.0% for its Idaho customers in the same EIA survey. Few homes use time-varying rates (1.2%). Idaho had 23,850 residential net-metered solar installations, 26.9 per 1,000 residential customers, and 18,684¹⁴ of them were on Idaho Power's system.

Help paying an Idaho electric bill

Idaho received $23.2 million from the federal Low Income Home Energy Assistance Program for fiscal 2026, $30.30 per occupied home (21st lowest among the states); the first fiscal 2027 release was $20.4 million¹⁵. The help paying your electric bill guide explains how LIHEAP works and what else utilities offer.