Iowa electricity rates: two utilities, two price levels
Homes in Iowa paid an average of 14.20¢ per kWh over the last 12 months (Sep 2025–Aug 2026), 21.3% below the US average of 18.04¢; 17.06¢ in August 2026 alone.1 The average residential bill was $117.30 a month in 2025, for 861 kWh.2
EIA monthly data through August 2026 (preliminary, released October 23, 2026); annual data for 2025 are final. Next monthly update expected November 24, 2026. Average revenue per kWh includes fixed charges and riders; it is not a tariff rate.
Midwest region, West North Central division
From 2020 to 2025, Iowa's average residential price rose 9.3%, an increase that ranked the lowest3 among the 50 states and DC, while wind's share of the state's generation ranked the highest4. The state average hides a wide split: MidAmerican Energy's customers paid 11.21¢ per kWh in 2025, Alliant Energy's 17.77¢ per kWh5.
Iowa's average price, by period
Over the 12 months from September 2025 to August 2026, Iowa homes paid an average of 14.20¢ per kWh, 3.84¢ per kWh less than the US average and tied for 14th lowest1 among the 50 states and DC. The figure is average revenue per kWh: what residential customers paid their utilities in total, monthly customer charges, fuel adjustments and riders included, divided by the kilowatt-hours they used. No Iowa household sees it as a line on its bill.
The period changes the answer. The 2025 calendar-year average was 13.62¢ per kWh, 16th lowest3. The single month of August 2026 averaged 17.06¢ per kWh, 23rd highest, because Iowa's average price runs highest in summer: over the last 12 months it ranged from 12.48¢ per kWh in December 2025 to 17.06¢ per kWh in August 20261. Comparisons with other states therefore use the 12-month figure; monthly figures since January 2026 are preliminary.
The average bill was $117.30 a month in 2025, 9th lowest among the states, for 861 kWh of use, close to the US average of 874 kWh2. Households' own reports in the Census Bureau's 2025 American Community Survey give a median of about $141 for the last month's electricity bill, against $169 nationally; 29.0% of paying households reported less than $100 and 15.9% reported $250 or more (margin of error ±0.5 percentage points6). Survey bills are recalled amounts that include taxes, so they do not match EIA's revenue-based average.
A slow climb since 2020
Iowa's residential price was 12.46¢ per kWh in 2020 and 13.62¢ per kWh in 2025, up 9.3%. Nationally the average rose 31.0% over the same years, from 13.15¢ per kWh to 17.23¢ per kWh. Iowa's increase ranked the lowest3 among the states.
Source: EIA, Historical state data, annual sales, revenue and customers. Change in the annual residential average price from 2020 to 2025 (nominal dollars).
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| State | Residential price change, 2020 to 2025 |
|---|---|
| Iowa | +9.3% |
| Nebraska | +11.6% |
| Kansas | +12.4% |
| North Dakota | +13.2% |
| South Dakota | +13.4% |
| New Mexico | +14.8% |
| Montana | +15.6% |
| Alaska | +15.7% |
| Vermont | +16.6% |
| Nevada | +16.9% |
| South Carolina | +18.3% |
| Missouri | +18.5% |
| Idaho | +18.9% |
| Minnesota | +20.2% |
| Wyoming | +20.3% |
| United States | +31.0% |
The longer record looks similar. Since 2001, when Iowa homes paid 8.41¢ per kWh7, the average has risen 62.0%, the 3rd lowest increase among the states, against 100.8% for the US. Iowa started that period a little below the national average and has drifted further below it. The annual price still rose in 20 of the years since 2002; the last annual decline was in 20183.
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 | Iowa (¢/kWh) | United States (¢/kWh) |
|---|---|---|
| 2001 | 8.41¢ | 8.58¢ |
| 2002 | 8.35¢ | 8.44¢ |
| 2003 | 8.57¢ | 8.72¢ |
| 2004 | 8.96¢ | 8.95¢ |
| 2005 | 9.27¢ | 9.45¢ |
| 2006 | 9.63¢ | 10.40¢ |
| 2007 | 9.45¢ | 10.65¢ |
| 2008 | 9.49¢ | 11.26¢ |
| 2009 | 9.99¢ | 11.51¢ |
| 2010 | 10.42¢ | 11.54¢ |
| 2011 | 10.46¢ | 11.72¢ |
| 2012 | 10.82¢ | 11.88¢ |
| 2013 | 11.04¢ | 12.13¢ |
| 2014 | 11.16¢ | 12.52¢ |
| 2015 | 11.63¢ | 12.65¢ |
| 2016 | 11.94¢ | 12.55¢ |
| 2017 | 12.34¢ | 12.89¢ |
| 2018 | 12.24¢ | 12.87¢ |
| 2019 | 12.46¢ | 13.01¢ |
| 2020 | 12.46¢ | 13.15¢ |
| 2021 | 12.73¢ | 13.66¢ |
| 2022 | 13.15¢ | 15.04¢ |
| 2023 | 13.31¢ | 16.00¢ |
| 2024 | 13.40¢ | 16.48¢ |
| 2025 | 13.62¢ | 17.23¢ |
2026: faster increases in the latest readings
The recent months do not continue the slow trend. Over the last 12 months (September 2025 to August 2026), the residential average was 4.9% higher than in the 12 months before, after a rise of 1.6%3 from 2024 to 2025; the national 12-month increase was 6.5%. In August 2026 alone, it was +10.2% against August 2025, the 10th highest increase among the states that month, while the US average moved +3.4%. For January to August 2026 the increase was 6.0%1.
The two large utilities moved very differently. MidAmerican Energy's average residential price in August 20261 was 15.23¢ per kWh, +15.6% against the same month a year earlier; Alliant Energy's was 21.48¢ per kWh, +3.2%8. These are preliminary single-month figures from EIA's monthly sample and can be revised; the next release is due November 24, 2026.
MidAmerican and Alliant: one state, two price levels
Two investor-owned companies deliver electricity to 84.4% of Iowa's residential customers. MidAmerican Energy serves 51.0% of them, Alliant Energy (IPL) 33.4%5. Both have their rates and services regulated by the Iowa Utilities Commission, which names them as the state's two rate-regulated investor-owned electric utilities.
Their prices are far apart. In 2025, MidAmerican Energy's residential customers paid an average of 11.21¢ per kWh, 17.7% below the Iowa average and the 4th lowest of 177 among large US utilities. Alliant Energy's paid 17.77¢ per kWh, 30.5% above the Iowa average and almost exactly the national average for investor-owned utilities (0.1% below the national average for investor-owned utilities). Among the 9 Iowa utilities with 10,000 or more residential customers, those two set the bottom and the top, a spread of 6.56¢ per kWh5. Over the last 12 months the gap held: 11.58¢ per kWh against 18.37¢ per kWh8.
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.
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| Utility | average residential price (bundled customers) |
|---|---|
| MidAmerican Energy (IA) | 11.21¢ |
| Cedar Falls Utilities (IA) | 11.56¢ |
| City of Ames (IA) | 12.12¢ |
| Board of Water Electric & Communications (IA) | 12.89¢ |
| Midland Power Cooperative (IA) | 13.66¢ |
| Maquoketa Valley Rrl Electric Cooperative (IA) | 13.80¢ |
| Corridor Energy Cooperative (IA) | 14.18¢ |
| Eastern Iowa Light & Power Cooperative (IA) | 14.81¢ |
| Alliant Energy (IPL) (IA) | 17.77¢ |
Use does not close the gap. Alliant's homes used 739 kWh a month in 2025, fewer than MidAmerican's 828 kWh, yet their average bill was $131.38 against $92.85. From 2024 to 2025 MidAmerican's average price rose 1.8% and its average bill changed +6.5%; Alliant's price moved −0.7% while its average bill changed +2.8%5, as use went up at both.
The cooperatives and city utilities sit between the two. Across all of Iowa's electric cooperatives, residential customers paid an average of 13.61¢ per kWh in 2025; the city-owned and other public utilities averaged 12.22¢ per kWh, and the investor-owned group 13.64¢ per kWh5, a figure that blends MidAmerican's low average with Alliant's high one.
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.
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| Utility | average monthly residential bill |
|---|---|
| City of Ames (IA) | $72.36 |
| MidAmerican Energy (IA) | $92.85 |
| Cedar Falls Utilities (IA) | $96.58 |
| Board of Water Electric & Communications (IA) | $107.43 |
| Corridor Energy Cooperative (IA) | $125.74 |
| Alliant Energy (IPL) (IA) | $131.38 |
| Maquoketa Valley Rrl Electric Cooperative (IA) | $153.48 |
| Eastern Iowa Light & Power Cooperative (IA) | $177.31 |
| Midland Power Cooperative (IA) | $202.01 |
Which electric company serves your address
Searches for an "Iowa City electric company" or a "Marion electric company" have no answer at the level of the city. EIA's service-territory records list two or more distribution utilities in 99 of Iowa's 99 counties, up to 12 in Kossuth County. MidAmerican reports service in 55 counties and Alliant in 849, and neither is alone in any of them. Some cities run their own utility, as Ames and Cedar Falls do; elsewhere the boundary between MidAmerican, Alliant and a cooperative can fall between neighborhoods. The utility's own service map is the final word, and the county table at the end of this page lists every utility EIA records in each county.
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.
July peaks in use, August in price
Iowa homes used the most electricity in July 2026, 1,209 kWh on average, and the least in April 2026, 666 kWh: 1.8 times1 as much in the peak month over the last 12 months. Winter adds less than summer. Only 24.5% of Iowa households named electricity as their main heating fuel in the Census Bureau's 2025 survey, against 41.8%11 nationally, even though Iowa recorded the 12th highest12 number of heating degree days from 2016 to 2025.
Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential kWh sold per customer in each month. The table adds that month's average residential price. Monthly EIA data through August 2026 (released October 23, 2026); months since January 2026 are preliminary.
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| Month | kWh per customer | Residential ¢/kWh |
|---|---|---|
| September 2025 | 761 | 14.67¢ |
| October 2025 | 707 | 13.36¢ |
| November 2025 | 671 | 13.42¢ |
| December 2025 | 980 | 12.48¢ |
| January 2026 | 1,079 | 12.82¢ |
| February 2026 | 872 | 12.72¢ |
| March 2026 | 808 | 13.41¢ |
| April 2026 | 666 | 13.86¢ |
| May 2026 | 694 | 14.14¢ |
| June 2026 | 856 | 15.93¢ |
| July 2026 | 1,209 | 15.99¢ |
| August 2026 | 872 | 17.06¢ |
Summer raises the price as well as the use, so bills swing more than kilowatt-hours. MidAmerican's average residential bill was $193.59 in July 2026 for 1,397 kWh, against $55.80 in November 2025 for 553 kWh. Alliant's ranged from $225.01 in July 2026 to $95.66 in April 20268. Statewide, the August 2026 bill averaged $148.72 for 872 kWh1, against $117.302 for the average month of 2025.
Wind first, coal second, no nuclear
Wind turbines produced 58.5% of the electricity generated in Iowa in 2025, ranked the highest among the states and up from 31.5% in 2015. Coal supplied 25.6%, down from 52.6%, and natural gas 12.2%. Nuclear power, 9.3% of generation in 2015, was 0.0% in 2025. Solar was 1.7%. Nationally, wind produced 10.4%4.
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 | |
|---|---|---|---|---|---|---|---|---|
| Iowa, 2025 | 12.2% | 25.6% | 0.0% | 1.5% | 58.5% | 1.7% | 0.1% | 0.3% |
| Iowa, 2015 | 4.2% | 52.6% | 9.3% | 1.7% | 31.5% | 0.0% | 0.2% | 0.5% |
| United States, 2025 | 40.9% | 16.6% | 17.7% | 5.5% | 10.4% | 6.8% | 0.4% | 1.7% |
Iowa's power plants generated 74.5 terawatt-hours in 2025, the equivalent of 126%4 of the state's retail electricity sales. The generation mix belongs to the whole fleet in the state, not to any one utility's customers, and EIA's price data do not separate the effect of any single fuel on what Iowans paid.
Businesses and large industrial users
Commercial customers paid an average of 11.28¢ per kWh over the last 12 months, 18.7% below the US average, and industrial customers 7.43¢ per kWh, 16.6% below the US average1. Commercial bills were small: $486.51 a month in 2025, 3rd lowest among the states, against $856.32 nationally, for 4,488 kWh of use. The average industrial account is large instead, with a bill of $19,403.66 a month, the 14th highest2, because each one buys a great deal of power at a low unit price.
The latest reading jumped for businesses as well: in August 2026 the commercial price was +9.9% against a year earlier, close to the residential +10.2%, and the industrial +4.1%. Over the full 12 months the increases were 4.9% and 5.1%1.
Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Average revenue per kWh: what each customer class paid in total divided by what it used. Industrial customers take power at higher voltage and in large, steady volumes, so their average is lower. Monthly EIA data through August 2026 (released October 23, 2026); months since January 2026 are preliminary.
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| Sector | Iowa (¢/kWh) | United States (¢/kWh) |
|---|---|---|
| Residential | 14.20¢ | 18.04¢ |
| Commercial | 11.28¢ | 13.87¢ |
| Industrial | 7.43¢ | 8.91¢ |
| All sectors | 9.98¢ | 14.15¢ |
Iowa against its six neighbors
Of Iowa's 6 neighbors, 2 had a lower residential price over the last 12 months; Nebraska was the lowest at 12.74¢ per kWh and Illinois the highest at 18.91¢ per kWh1. The table adds the 2020 to 2025 change and the 2025 bill.
| Illinois | 18.91¢ | +35.5% | 717 | $126.59 |
|---|---|---|---|---|
| Wisconsin | 18.79¢ | +26.3% | 667 | $120.60 |
| United States | 18.04¢ | +31.0% | 874 | $150.68 |
| Minnesota | 16.28¢ | +20.2% | 744 | $117.67 |
| South Dakota | 14.28¢ | +13.4% | 984 | $131.10 |
| Iowa | 14.20¢ | +9.3% | 861 | $117.30 |
| Missouri | 13.97¢ | +18.5% | 1,038 | $137.97 |
| Nebraska | 12.74¢ | +11.6% | 973 | $117.23 |
Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state; EIA, Historical state data, annual sales, revenue and customers; EIA-861 2025, average monthly bill by state. Residential ¢/kWh, 12 months: 2025-09 to 2026-08; Residential price change, 2020 to 2025: 2020 to 2025; kWh a month, 2025: 2025; Monthly bill, 2025: 2025.
Meters, rooftop solar, outages and help paying
Advanced meters made up 46.3% of residential meters in 2025, 9th lowest among the states. Alliant reported 99.4% of its residential meters as advanced. Time-varying pricing reached 6.0% of residential customers statewide; Alliant had 17,154 residential customers enrolled in time-of-use pricing (4.1%), MidAmerican 122. Net-metered rooftop solar is also more common in Alliant's territory: 12,379 residential installations, 29.5 per 1,000 customers, against 4,965 and 7.8 at MidAmerican. Statewide there were 19,22013.
Iowa customers averaged 152 minutes without power in 2025 counting major storms and 78 minutes excluding them, with 1.03 interruptions per customer. MidAmerican's customers averaged 205 minutes counting major events; Alliant reported 89 minutes14, measured by a method other than the IEEE 1366 standard, so the two are not directly comparable. The power outages ranking compares every state.
Iowa received $58.8 million from the federal Low Income Home Energy Assistance Program for fiscal 2026, $43.38 per occupied home, the 16th highest among the states; the first release for fiscal 2027 was $52.2 million15. The program helps with heating fuel as well as electricity. How to apply, and what other help exists, is in the guide to help paying your electric bill.
| MidAmerican Energy | Investor-owned | 639,558 | 11.21¢ | $92.85 | 828 |
|---|---|---|---|---|---|
| Alliant Energy (IPL) | Investor-owned | 419,451 | 17.77¢ | $131.38 | 739 |
| Corridor Energy Cooperative | Cooperative | 30,992 | 14.18¢ | $125.74 | 887 |
| City of Ames | Municipal | 25,123 | 12.12¢ | $72.36 | 597 |
| Eastern Iowa Light & Power Cooperative | Cooperative | 20,472 | 14.81¢ | $177.31 | 1,197 |
| Cedar Falls Utilities | Municipal | 17,746 | 11.56¢ | $96.58 | 836 |
| Midland Power Cooperative | Cooperative | 12,083 | 13.66¢ | $202.01 | 1,479 |
| Maquoketa Valley Rrl Electric Cooperative | Cooperative | 11,161 | 13.80¢ | $153.48 | 1,112 |
| Board of Water Electric & Communications | Municipal | 10,105 | 12.89¢ | $107.43 | 833 |
| Allamakee-Clayton El Cooperative | Cooperative | 9,946 all | 18.65¢ all customers | – | – |
| Iowa Lakes Electric Cooperative | Cooperative | 9,757 | 13.78¢ | $209.52 | 1,520 |
| North West Rural Electric Cooperative | Cooperative | 9,461 | 9.42¢ | $216.47 | 2,299 |
| Access Energy Cooperative | Cooperative | 8,890 | 14.81¢ | $162.68 | 1,098 |
| East-Central Iowa Rural Electric Cooperative | Cooperative | 7,417 | 13.13¢ | $186.49 | 1,420 |
| Consumers Energy Cooperative | Cooperative | 7,121 | 14.85¢ | $160.49 | 1,081 |
| Indianola Municipal Utilities | Municipal | 6,642 all | 12.15¢ all customers | – | – |
| T I P Rural Electric Cooperative | Cooperative | 6,613 all | 12.34¢ all customers | – | – |
| Chariton Valley Electric Cooperative | Cooperative | 6,344 all | 14.39¢ all customers | – | – |
| City of Spencer | Municipal | 6,337 all | 8.72¢ all customers | – | – |
| Southwest Iowa Rural Electric Cooperative | Cooperative | 6,094 all | 13.54¢ all customers | – | – |
| MiEnergy Cooperative | Cooperative | 6,023 | 17.20¢ | $177.37 | 1,031 |
| Clarke Electric Cooperative | Cooperative | 5,812 all | 14.22¢ all customers | – | – |
| Western Iowa Power Cooperative | Cooperative | 5,573 all | 16.11¢ all customers | – | – |
| City of Pella | Municipal | 5,383 all | 9.18¢ all customers | – | – |
| Waverly Municipal Electric Utility | Municipal | 5,232 all | 13.17¢ all customers | – | – |
| Farmers Electric Cooperative | Cooperative | 5,131 all | 11.67¢ all customers | – | – |
| Guthrie County Rural E C A | Cooperative | 4,998 all | 9.93¢ all customers | – | – |
| Southern Iowa Electric Cooperative | Cooperative | 4,818 all | 16.95¢ all customers | – | – |
| Atlantic Municipal Utilities | Municipal | 4,682 all | 7.40¢ all customers | – | – |
| City of Webster City | Municipal | 4,462 all | 12.02¢ all customers | – | – |
| Heartland Power Cooperative | Cooperative | 4,357 | 12.84¢ | $207.87 | 1,619 |
| City of Mt Pleasant | Municipal | 4,141 all | 15.76¢ all customers | – | – |
| Harrison County Rrl Electric Cooperative | Cooperative | 3,931 all | 10.86¢ all customers | – | – |
| Butler County Rural Electric Cooperative | Cooperative | 3,903 | 14.50¢ | $208.64 | 1,439 |
| City of Algona | Municipal | 3,815 all | 8.76¢ all customers | – | – |
| Nishnabotna Valley R E C | Cooperative | 3,765 all | 9.26¢ all customers | – | – |
| Woodbury County Rural E C A | Cooperative | 3,468 all | 11.17¢ all customers | – | – |
| Prairie Energy Cooperative | Cooperative | 3,433 | 14.14¢ | $192.71 | 1,363 |
| City of Estherville | Municipal | 3,426 all | 14.67¢ all customers | – | – |
| City of Onawa | Municipal | 3,347 all | 11.58¢ all customers | – | – |
| City of Denison | Municipal | 3,316 all | 7.17¢ all customers | – | – |
| Pella Cooperative Electric Association | Cooperative | 3,234 all | 13.83¢ all customers | – | – |
| Eldridge City Utilities | Municipal | 3,016 all | 13.80¢ all customers | – | – |
| City of Sioux Center | Municipal | 2,975 all | 9.08¢ all customers | – | – |
| Harlan Municipal Utilities | Municipal | 2,883 all | 11.30¢ all customers | – | – |
| City of Winterset | Municipal | 2,847 all | 11.50¢ all customers | – | – |
| City of Maquoketa | Municipal | 2,804 | 13.56¢ | $98.43 | 726 |
| Raccoon Valley Electric Cooperative | Cooperative | 2,788 all | 12.30¢ all customers | – | – |
| City of Independence | Municipal | 2,737 | 14.45¢ | $97.65 | 676 |
| City of Vinton | Municipal | 2,602 all | 14.59¢ all customers | – | – |
| City of New Hampton | Municipal | 2,516 all | 8.59¢ all customers | – | – |
| City of Orange City | Municipal | 2,462 all | 9.20¢ all customers | – | – |
| City of Osage | Municipal | 2,454 all | 11.29¢ all customers | – | – |
| Lyon Rural Electric Cooperative | Cooperative | 2,317 all | 11.14¢ all customers | – | – |
| Grundy County Rural Electric Cooperative | Cooperative | 2,265 all | 10.49¢ all customers | – | – |
| City of Sergeant Bluff | Municipal | 2,193 all | 10.98¢ all customers | – | – |
| City of Forest City | Municipal | 2,105 all | 10.65¢ all customers | – | – |
| City of Story City | Municipal | 1,993 all | 11.98¢ all customers | – | – |
| Franklin Rural Electric Cooperative | Cooperative | 1,982 all | 10.48¢ all customers | – | – |
| City of Tipton | Municipal | 1,817 all | 10.94¢ all customers | – | – |
| Calhoun County Electric Cooperative Association | Cooperative | 1,663 all | 14.90¢ all customers | – | – |
| City of Milford | Municipal | 1,644 all | 11.24¢ all customers | – | – |
| City of Bellevue | Municipal | 1,596 all | 10.21¢ all customers | – | – |
| City of West Liberty | Municipal | 1,596 all | 14.68¢ all customers | – | – |
| City of Carlisle | Municipal | 1,579 all | 13.62¢ all customers | – | – |
| Grundy Center Municipal Light & Power | Municipal | 1,576 all | 11.93¢ all customers | – | – |
| City of Wilton | Municipal | 1,558 all | 11.47¢ all customers | – | – |
| City of Guttenberg | Municipal | 1,542 all | 14.40¢ all customers | – | – |
| City of Sibley | Municipal | 1,524 all | 10.36¢ all customers | – | – |
| Rock Rapids Municipal Utility | Municipal | 1,490 all | 9.64¢ all customers | – | – |
| City of Pocahontas | Municipal | 1,452 all | 4.62¢ all customers | – | – |
| City of Bloomfield | Municipal | 1,405 all | 12.63¢ all customers | – | – |
| City of Lake View | Municipal | 1,381 all | 9.92¢ all customers | – | – |
| City of Hawarden | Municipal | 1,322 all | 9.66¢ all customers | – | – |
| Osceola Electric Cooperative | Cooperative | 1,276 all | 9.40¢ all customers | – | – |
| New London Municipal Utilities | Municipal | 1,245 all | 14.41¢ all customers | – | – |
| City of Lake Mills | Municipal | 1,236 all | 12.11¢ all customers | – | – |
| City of Lamoni | Municipal | 1,215 all | 10.69¢ all customers | – | – |
| La Porte City Utilities | Municipal | 1,213 all | 12.85¢ all customers | – | – |
| Atchison-Holt Electric Cooperative | Cooperative | 1,209 all | 14.87¢ all customers | – | – |
| Cascade Municipal Utilities | Municipal | 1,198 all | 9.74¢ all customers | – | – |
| City of Greenfield | Municipal | 1,163 all | 11.71¢ all customers | – | – |
| City of Ogden | Municipal | 1,151 all | 18.14¢ all customers | – | – |
| City of Sumner | Municipal | 1,128 all | 15.35¢ all customers | – | – |
| City of Corning | Municipal | 1,115 all | 11.83¢ all customers | – | – |
| City of Traer | Municipal | 1,099 all | 11.14¢ all customers | – | – |
| City of State Center | Municipal | 1,025 all | 12.58¢ all customers | – | – |
| City of Alta | Municipal | 1,005 all | 12.37¢ all customers | – | – |
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final; utilities with 1,000 or more residential customers. Price, bill and kWh are for bundled (full-service) residential customers: revenue divided by kWh, all charges included. Small utilities that file EIA's short form report all customers together (marked "all customers").
| Adair County | 10 | MidAmerican Energy, Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, Waverly Municipal Electric Utility, Farmers Electric Cooperative, Guthrie County Rural E C A, City of Greenfield, City of Stuart, City of Fontanelle, City of Orient |
|---|---|---|
| Adams County | 4 | MidAmerican Energy, Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, City of Corning |
| Allamakee County | 3 | Alliant Energy (IPL), Allamakee-Clayton El Cooperative, MiEnergy Cooperative |
| Appanoose County | 3 | Alliant Energy (IPL), Chariton Valley Electric Cooperative, Southern Iowa Electric Cooperative |
| Audubon County | 8 | MidAmerican Energy, Western Iowa Power Cooperative, Farmers Electric Cooperative, Guthrie County Rural E C A, Atlantic Municipal Utilities, Nishnabotna Valley R E C, Raccoon Valley Electric Cooperative, City of Kimballton |
| Benton County | 6 | Alliant Energy (IPL), Corridor Energy Cooperative, East-Central Iowa Rural Electric Cooperative, T I P Rural Electric Cooperative, City of Vinton, City of Traer |
| Black Hawk County | 6 | MidAmerican Energy, Alliant Energy (IPL), Cedar Falls Utilities, East-Central Iowa Rural Electric Cooperative, Grundy County Rural Electric Cooperative, La Porte City Utilities |
| Boone County | 4 | Alliant Energy (IPL), Midland Power Cooperative, City of Story City, City of Ogden |
| Bremer County | 9 | MidAmerican Energy, Alliant Energy (IPL), Allamakee-Clayton El Cooperative, East-Central Iowa Rural Electric Cooperative, Waverly Municipal Electric Utility, Butler County Rural Electric Cooperative, City of Sumner, City of Denver, City of Readlyn |
| Buchanan County | 6 | MidAmerican Energy, Alliant Energy (IPL), Maquoketa Valley Rrl Electric Cooperative, East-Central Iowa Rural Electric Cooperative, City of Independence, City of Fairbank |
| Buena Vista County | 6 | MidAmerican Energy, Alliant Energy (IPL), Iowa Lakes Electric Cooperative, Raccoon Valley Electric Cooperative, City of Alta, City of Marathon |
| Butler County | 7 | MidAmerican Energy, Alliant Energy (IPL), Cedar Falls Utilities, Butler County Rural Electric Cooperative, Grundy County Rural Electric Cooperative, Franklin Rural Electric Cooperative, City of Aplington |
| Calhoun County | 5 | MidAmerican Energy, Midland Power Cooperative, Raccoon Valley Electric Cooperative, Calhoun County Electric Cooperative Association, City of Farnhamville |
| Carroll County | 8 | MidAmerican Energy, Alliant Energy (IPL), Western Iowa Power Cooperative, Raccoon Valley Electric Cooperative, City of Manning, City of Glidden, City of Coon Rapids, City of Breda |
| Cass County | 9 | MidAmerican Energy, Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, Waverly Municipal Electric Utility, Farmers Electric Cooperative, Guthrie County Rural E C A, Atlantic Municipal Utilities, Nishnabotna Valley R E C, City of Anita |
| Cedar County | 7 | Alliant Energy (IPL), Corridor Energy Cooperative, Eastern Iowa Light & Power Cooperative, Maquoketa Valley Rrl Electric Cooperative, City of Tipton, City of Wilton, City of Durant |
| Cerro Gordo County | 6 | MidAmerican Energy, Alliant Energy (IPL), Heartland Power Cooperative, Butler County Rural Electric Cooperative, Prairie Energy Cooperative, Franklin Rural Electric Cooperative |
| Cherokee County | 6 | MidAmerican Energy, Alliant Energy (IPL), Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, Woodbury County Rural E C A, City of Aurelia |
| Chickasaw County | 10 | MidAmerican Energy, Alliant Energy (IPL), Allamakee-Clayton El Cooperative, MiEnergy Cooperative, Heartland Power Cooperative, Butler County Rural Electric Cooperative, City of New Hampton, City of Fredericksburg, City of Lawler, City of Alta Vista |
| Clarke County | 2 | Alliant Energy (IPL), Clarke Electric Cooperative |
| Clay County | 4 | Alliant Energy (IPL), Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, City of Spencer |
| Clayton County | 7 | Alliant Energy (IPL), Maquoketa Valley Rrl Electric Cooperative, Allamakee-Clayton El Cooperative, East-Central Iowa Rural Electric Cooperative, City of Guttenberg, City of Strawberry Point, City of McGregor |
| Clinton County | 5 | MidAmerican Energy, Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Maquoketa Valley Rrl Electric Cooperative, City of Maquoketa |
| Crawford County | 8 | MidAmerican Energy, North West Rural Electric Cooperative, Western Iowa Power Cooperative, Harrison County Rrl Electric Cooperative, Nishnabotna Valley R E C, City of Denison, Raccoon Valley Electric Cooperative, Town of Manilla |
| Dallas County | 5 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Waverly Municipal Electric Utility, Guthrie County Rural E C A |
| Davis County | 5 | Alliant Energy (IPL), Access Energy Cooperative, Chariton Valley Electric Cooperative, Southern Iowa Electric Cooperative, City of Bloomfield |
| Decatur County | 5 | Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, Clarke Electric Cooperative, City of Lamoni, Grundy Electric Cooperative |
| Delaware County | 6 | Alliant Energy (IPL), Maquoketa Valley Rrl Electric Cooperative, Allamakee-Clayton El Cooperative, East-Central Iowa Rural Electric Cooperative, City of Earlville, City of Hopkinton |
| Des Moines County | 5 | Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Access Energy Cooperative, New London Municipal Utilities, City of Danville |
| Dickinson County | 6 | Alliant Energy (IPL), Iowa Lakes Electric Cooperative, City of Milford, Osceola Electric Cooperative, City of Lake Park, Federated Rural Electric Association |
| Dubuque County | 4 | Alliant Energy (IPL), Maquoketa Valley Rrl Electric Cooperative, Allamakee-Clayton El Cooperative, Cascade Municipal Utilities |
| Emmet County | 4 | Alliant Energy (IPL), Iowa Lakes Electric Cooperative, City of Estherville, Federated Rural Electric Association |
| Fayette County | 6 | Alliant Energy (IPL), Allamakee-Clayton El Cooperative, East-Central Iowa Rural Electric Cooperative, MiEnergy Cooperative, Butler County Rural Electric Cooperative, City of Fairbank |
| Floyd County | 6 | MidAmerican Energy, Alliant Energy (IPL), Heartland Power Cooperative, Butler County Rural Electric Cooperative, Franklin Rural Electric Cooperative, City of Rockford |
| Franklin County | 6 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Butler County Rural Electric Cooperative, Prairie Energy Cooperative, Franklin Rural Electric Cooperative |
| Fremont County | 3 | MidAmerican Energy, Southwest Iowa Rural Electric Cooperative, Atchison-Holt Electric Cooperative |
| Greene County | 7 | Alliant Energy (IPL), Midland Power Cooperative, Guthrie County Rural E C A, Raccoon Valley Electric Cooperative, Calhoun County Electric Cooperative Association, City of Grand Junction, City of Paton |
| Grundy County | 6 | Alliant Energy (IPL), Cedar Falls Utilities, Midland Power Cooperative, Grundy County Rural Electric Cooperative, Grundy Center Municipal Light & Power, City of Dike |
| Guthrie County | 8 | Alliant Energy (IPL), Midland Power Cooperative, Farmers Electric Cooperative, Guthrie County Rural E C A, Raccoon Valley Electric Cooperative, City of Stuart, City of Panora, City of Coon Rapids |
| Hamilton County | 11 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, City of Webster City, Prairie Energy Cooperative, City of Story City, City of Stratford, City of Ellsworth, City of Stanhope, Pleasant Hill Community Line, Cass Electric Cooperative |
| Hancock County | 6 | Alliant Energy (IPL), Heartland Power Cooperative, Prairie Energy Cooperative, City of Forest City, City of Corwith, Boone Valley Electric Cooperative |
| Hardin County | 6 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Prairie Energy Cooperative, Grundy County Rural Electric Cooperative, Franklin Rural Electric Cooperative |
| Harrison County | 5 | MidAmerican Energy, Western Iowa Power Cooperative, Harrison County Rrl Electric Cooperative, Nishnabotna Valley R E C, City of Woodbine |
| Henry County | 6 | Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Access Energy Cooperative, City of Mt Pleasant, New London Municipal Utilities, City of Danville |
| Howard County | 3 | Alliant Energy (IPL), MiEnergy Cooperative, Heartland Power Cooperative |
| Humboldt County | 7 | MidAmerican Energy, Midland Power Cooperative, Prairie Energy Cooperative, City of West Bend, City of Renwick, City of Livermore, Boone Valley Electric Cooperative |
| Ida County | 6 | MidAmerican Energy, Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, Western Iowa Power Cooperative, Woodbury County Rural E C A, Raccoon Valley Electric Cooperative |
| Iowa County | 6 | Alliant Energy (IPL), Corridor Energy Cooperative, East-Central Iowa Rural Electric Cooperative, T I P Rural Electric Cooperative, Amana Society Service Co, Farmers Electric Cooperative |
| Jackson County | 7 | Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Maquoketa Valley Rrl Electric Cooperative, City of Maquoketa, City of Bellevue, City of Preston, City of Sabula |
| Jasper County | 4 | MidAmerican Energy, Alliant Energy (IPL), Consumers Energy Cooperative, Pella Cooperative Electric Association |
| Jefferson County | 3 | Alliant Energy (IPL), Access Energy Cooperative, T I P Rural Electric Cooperative |
| Johnson County | 7 | MidAmerican Energy, Alliant Energy (IPL), Corridor Energy Cooperative, Eastern Iowa Light & Power Cooperative, East-Central Iowa Rural Electric Cooperative, T I P Rural Electric Cooperative, Farmers Electric Cooperative |
| Jones County | 5 | Alliant Energy (IPL), Corridor Energy Cooperative, Eastern Iowa Light & Power Cooperative, Maquoketa Valley Rrl Electric Cooperative, Cascade Municipal Utilities |
| Keokuk County | 3 | Alliant Energy (IPL), Access Energy Cooperative, T I P Rural Electric Cooperative |
| Kossuth County | 12 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Iowa Lakes Electric Cooperative, Heartland Power Cooperative, City of Algona, Prairie Energy Cooperative, Bancroft Municipal Utilities, City of West Bend, City of Whittemore, City of Burt, Federated Rural Electric Association |
| Lee County | 3 | Alliant Energy (IPL), Access Energy Cooperative, West Point Utility System |
| Linn County | 6 | Alliant Energy (IPL), Corridor Energy Cooperative, Eastern Iowa Light & Power Cooperative, Maquoketa Valley Rrl Electric Cooperative, East-Central Iowa Rural Electric Cooperative, City of Coggon |
| Louisa County | 4 | Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Access Energy Cooperative, Waverly Municipal Electric Utility |
| Lucas County | 3 | Alliant Energy (IPL), Chariton Valley Electric Cooperative, Clarke Electric Cooperative |
| Lyon County | 8 | MidAmerican Energy, Alliant Energy (IPL), North West Rural Electric Cooperative, Lyon Rural Electric Cooperative, Rock Rapids Municipal Utility, Osceola Electric Cooperative, City of Larchwood, Nobles Cooperative Electric |
| Madison County | 6 | MidAmerican Energy, Alliant Energy (IPL), Clarke Electric Cooperative, Waverly Municipal Electric Utility, Farmers Electric Cooperative, City of Winterset |
| Mahaska County | 5 | MidAmerican Energy, Alliant Energy (IPL), T I P Rural Electric Cooperative, City of Pella, Pella Cooperative Electric Association |
| Marion County | 5 | MidAmerican Energy, Alliant Energy (IPL), Chariton Valley Electric Cooperative, City of Pella, Pella Cooperative Electric Association |
| Marshall County | 5 | Alliant Energy (IPL), Midland Power Cooperative, Consumers Energy Cooperative, Grundy County Rural Electric Cooperative, City of State Center |
| Mills County | 2 | MidAmerican Energy, Southwest Iowa Rural Electric Cooperative |
| Mitchell County | 4 | Alliant Energy (IPL), MiEnergy Cooperative, Heartland Power Cooperative, City of Osage |
| Monona County | 6 | MidAmerican Energy, Western Iowa Power Cooperative, Harrison County Rrl Electric Cooperative, Woodbury County Rural E C A, City of Onawa, City of Mapleton |
| Monroe County | 3 | MidAmerican Energy, Alliant Energy (IPL), Chariton Valley Electric Cooperative |
| Montgomery County | 5 | MidAmerican Energy, Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, City of Villisca, City of Stanton |
| Muscatine County | 8 | MidAmerican Energy, Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Board of Water Electric & Communications, Waverly Municipal Electric Utility, City of West Liberty, City of Wilton, City of Durant |
| O'Brien County | 9 | MidAmerican Energy, Alliant Energy (IPL), Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, Osceola Electric Cooperative, City of Hartley, City of Sanborn, City of Paullina, City of Primghar |
| Osceola County | 8 | Alliant Energy (IPL), Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, Lyon Rural Electric Cooperative, City of Sibley, Osceola Electric Cooperative, Federated Rural Electric Association, Nobles Cooperative Electric |
| Page County | 4 | MidAmerican Energy, Southwest Iowa Rural Electric Cooperative, Atchison-Holt Electric Cooperative, United Electric Cooperative |
| Palo Alto County | 5 | MidAmerican Energy, Alliant Energy (IPL), Iowa Lakes Electric Cooperative, City of West Bend, City of Graettinger |
| Plymouth County | 8 | MidAmerican Energy, Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, Woodbury County Rural E C A, City of Remsen, City of Akron, City of Hinton, Town of Westfield |
| Pocahontas County | 8 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Iowa Lakes Electric Cooperative, Calhoun County Electric Cooperative Association, City of Pocahontas, City of Laurens, City of Fonda |
| Polk County | 5 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Consumers Energy Cooperative, Waverly Municipal Electric Utility |
| Pottawattamie County | 7 | MidAmerican Energy, Waverly Municipal Electric Utility, Atlantic Municipal Utilities, Harrison County Rrl Electric Cooperative, Nishnabotna Valley R E C, City of Neola, City of Shelby |
| Poweshiek County | 6 | MidAmerican Energy, Alliant Energy (IPL), T I P Rural Electric Cooperative, Pella Cooperative Electric Association, City of Montezuma, City of Brooklyn |
| Ringgold County | 5 | Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, Clarke Electric Cooperative, United Electric Cooperative, Grundy Electric Cooperative |
| Sac County | 9 | MidAmerican Energy, Iowa Lakes Electric Cooperative, North West Rural Electric Cooperative, Western Iowa Power Cooperative, Raccoon Valley Electric Cooperative, Calhoun County Electric Cooperative Association, City of Lake View, City of Wall Lake, City of Auburn |
| Scott County | 7 | MidAmerican Energy, Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Eldridge City Utilities, City of Durant, City of Buffalo, City of Long Grove |
| Shelby County | 7 | MidAmerican Energy, Western Iowa Power Cooperative, Atlantic Municipal Utilities, Harrison County Rrl Electric Cooperative, Nishnabotna Valley R E C, Harlan Municipal Utilities, City of Shelby |
| Sioux County | 8 | MidAmerican Energy, Alliant Energy (IPL), North West Rural Electric Cooperative, City of Sioux Center, City of Orange City, Lyon Rural Electric Cooperative, City of Hawarden, City of Alton |
| Story County | 6 | Alliant Energy (IPL), City of Ames, Midland Power Cooperative, Consumers Energy Cooperative, City of Story City, City of State Center |
| Tama County | 7 | Alliant Energy (IPL), East-Central Iowa Rural Electric Cooperative, Consumers Energy Cooperative, T I P Rural Electric Cooperative, Grundy County Rural Electric Cooperative, City of Traer, City of Dysart |
| Taylor County | 5 | MidAmerican Energy, Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, City of Lenox, United Electric Cooperative |
| Union County | 5 | Alliant Energy (IPL), Southwest Iowa Rural Electric Cooperative, Clarke Electric Cooperative, Farmers Electric Cooperative, City of Afton |
| Van Buren County | 4 | Alliant Energy (IPL), Access Energy Cooperative, Southern Iowa Electric Cooperative, Keosauqua Municipal Light & Power |
| Wapello County | 5 | Alliant Energy (IPL), Access Energy Cooperative, T I P Rural Electric Cooperative, Chariton Valley Electric Cooperative, Southern Iowa Electric Cooperative |
| Warren County | 6 | MidAmerican Energy, Alliant Energy (IPL), Indianola Municipal Utilities, Clarke Electric Cooperative, Pella Cooperative Electric Association, City of Carlisle |
| Washington County | 7 | MidAmerican Energy, Alliant Energy (IPL), Eastern Iowa Light & Power Cooperative, Access Energy Cooperative, T I P Rural Electric Cooperative, Waverly Municipal Electric Utility, Farmers Electric Cooperative |
| Wayne County | 4 | Alliant Energy (IPL), Chariton Valley Electric Cooperative, Clarke Electric Cooperative, Grundy Electric Cooperative |
| Webster County | 10 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Prairie Energy Cooperative, Calhoun County Electric Cooperative Association, Gowrie Municipal Utilities, City of Dayton, City of Stratford, City of Lehigh, City of Callender |
| Winnebago County | 5 | Alliant Energy (IPL), Heartland Power Cooperative, Prairie Energy Cooperative, City of Forest City, City of Lake Mills |
| Winneshiek County | 3 | Alliant Energy (IPL), Allamakee-Clayton El Cooperative, MiEnergy Cooperative |
| Woodbury County | 6 | MidAmerican Energy, North West Rural Electric Cooperative, Western Iowa Power Cooperative, Woodbury County Rural E C A, City of Sergeant Bluff, City of Anthon |
| Worth County | 5 | Alliant Energy (IPL), Heartland Power Cooperative, Prairie Energy Cooperative, Grafton Electric, Freeborn Mower Electric Cooperative |
| Wright County | 8 | MidAmerican Energy, Alliant Energy (IPL), Midland Power Cooperative, Prairie Energy Cooperative, Franklin Rural Electric Cooperative, City of Woolstock, Boone Valley Electric Cooperative, Cass Electric Cooperative |
Source: EIA-861 2025, service territory. Distribution utilities that report customers in the county (EIA-861 2025 service territory), largest first. Several utilities can serve parts of the same county; for a specific address, the utilities' own service-area maps decide.
Questions and answers
What is the cost per kWh of electricity in Iowa?
Iowa homes paid an average of 14.20¢ per kWh over the last 12 months (September 2025 to August 2026), fixed charges and riders included, 21.3% below the US average. The 2025 annual average was 13.62¢ per kWh3. The single month of August 2026 averaged 17.06¢ per kWh1 (preliminary), higher because Iowa's average price peaks in summer. These are averages of what customers paid, not a tariff.
What is the average electric bill in Iowa?
$117.30 a month in 2025 for 861 kWh, $33.38 less a month than the US average2, according to EIA. Over the last 12 months (September 2025 to August 2026) the computed average was $120.481. It differs by utility: $92.85 at MidAmerican Energy and $131.385 at Alliant Energy in 2025.
What electric companies serve Iowa?
EIA counted 180 utilities reporting customers in Iowa in 2025. MidAmerican Energy serves 51.0% of residential customers and Alliant Energy (IPL), the Alliant Energy utility legally named Interstate Power and Light Company, 33.4%5. Electric cooperatives and city-owned utilities serve nearly all of the rest. Your address, not your city's name, decides which one you have.
Can I choose my electricity supplier in Iowa?
No. In 2025, 0.0% of Iowa's residential customers bought electricity from a competitive supplier, and EIA lists 05 suppliers with residential customers in the state. The utility that owns the wires on your street also sells you the power.
More on electricity in and around Iowa
Utility pages: MidAmerican Energy and Alliant Energy (IPL).
Neighboring states: Illinois, Minnesota, Missouri, Nebraska, South Dakota and Wisconsin. Put Iowa side by side with another state in the comparison tool, or estimate a bill with your own kWh in the bill calculator.
| Ranking | Value | Rank |
|---|---|---|
| Cheapest electricity by state | 14.20¢ | tied 14th of 51 (1 = lowest) |
| Average electric bill by state | $117.30 | 43rd of 51 |
| Average electricity usage by state | 861 | 29th of 51 |
| Electricity price increases by state | +4.9% | 36th of 51 |
| Commercial electricity rates by state | 11.28¢ | 14th of 51 (1 = lowest) |
| Industrial electricity rates by state | 7.43¢ | 10th of 51 (1 = lowest) |
| Power outages by state | 152 | 41st of 51 |
| Renewable electricity by state | 62.0% | 6th of 51 |
| Rooftop solar on net metering by state | 13.2 | 29th of 51 |
Sources
- EIA, Electric Power Monthly / EIA-861M sales and revenue by state; table sales_revenue.xlsx (EPM Table 5.6.A); January 2001 to 2026-08; months since January 2026 preliminary; released October 23, 2026. www.eia.gov
- EIA-861 2025, average monthly bill by state; table Average_Bill_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA, Historical state data, annual sales, revenue and customers; table HS861 2010-.xlsx; 2010-2025, final; released October 7, 2026. www.eia.gov
- EIA, Net generation by state by type of producer by energy source; table annual_generation_state.xlsx; 1990-2025; released September 14, 2026. www.eia.gov
- EIA-861 annual electric power industry report, 2025 final; table Sales_Ult_Cust_2025; 2025, final; released October 7, 2026. www.eia.gov
- Census Bureau, American Community Survey 2025 1-year estimates, table B25132; 2025; released October 29, 2026. data.census.gov
- EIA, Historical state data, monthly sales and revenue 1990-2009; table HS861M 1990-2009.xlsx; 1990-2009, final. www.eia.gov
- EIA-861M monthly sales and revenue by utility; table sales_ult_cust_2025 and _2026; released October 23, 2026. www.eia.gov
- EIA-861 2025, service territory; table Service_Territory_2025; 2025, final; released October 7, 2026. www.eia.gov
- Census Bureau, Cartographic boundary file, counties; table cb_2025_us_county_5m; cb_2021_us_county_5m; 2025 (2021 for Connecticut). www.census.gov
- Census Bureau, American Community Survey 2025 1-year estimates, house heating fuel, table B25040; 2025; released October 29, 2026. data.census.gov
- NOAA, Climate Prediction Center population-weighted degree days by state; table daily state files, base 65°F; 2016-2025 annual sums; 1981-2010 CPC normals; released November 13, 2026. ftp.cpc.ncep.noaa.gov
- EIA-861 2025, advanced meters, dynamic pricing and net metering; table Advanced_Meters, Dynamic_Pricing, Net_Metering 2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, reliability; table Reliability_2025; 2025, final; released October 7, 2026. www.eia.gov
- HHS, LIHEAP funding releases to states; table FY2027 first release; FY2026 final; FY2027 first release (October 9, 2026); FY2026 total; released October 9, 2026. acf.gov
Margins of error (±) are at the 90% confidence level. A difference is called significant only when it passes the Census Bureau's test at that level. How every figure is built: methodology. Found an error? Write to [email protected]; corrections are listed on the updates page.