Alliant Energy (WPL) electric rates and bills in Wisconsin

Average price per kWh: three periods

Alliant Energy serves Wisconsin through Wisconsin Power and Light Company (WPL), the state's second-largest utility by homes served: 440,746 residential customers in 2025, 16.3%¹ of Wisconsin's total. What those homes paid per kWh depends on the period asked about:

All four are average revenue per kWh: what residential customers paid in total, divided by the kWh they used, with the fixed customer charge and fuel costs included and most taxes left out. A home using less than the average pays more per kWh than these figures, a home using more pays less.

The 2025 average was the 4th highest of the 20 Wisconsin utilities with 10,000 or more residential customers, 2.2% above the Wisconsin average and 3.9% above the national average for investor-owned utilities. Nationally it ranked 45th highest of 177 large utilities, where the median was 15.07¢ per kWh¹.

Why the 2025 bill rose faster than the price

Between 2024 and 2025, two things moved together at WPL. The average price rose from 16.89¢ per kWh to 18.47¢ per kWh, and use per home rose from 673 kWh to 694 kWh a month. A higher price multiplied by more kWh lifted the average bill from $113.70³ to $128.22, a change of +12.8%¹. Across Wisconsin the residential price rose 5.2%⁵ that year, and the state's average bill +8.8%⁶.

The four other large Wisconsin utilities all had smaller increases in their 2025 average bills:

Wisconsin Public Service (WI)$105.93

MGE (WI)$106.58

Xcel Energy (WI)$112.86

Alliant Energy (WPL) (WI)$128.22

We Energies (WI)$131.37

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
Wisconsin Public Service (WI)	$105.93
MGE (WI)	$106.58
Xcel Energy (WI)	$112.86
Alliant Energy (WPL) (WI)	$128.22
We Energies (WI)	$131.37

WPL's prices are set in rate cases before the Public Service Commission of Wisconsin. According to Alliant Energy's 2025 annual report to the SEC, the commission's December 2023 order raised WPL's electric base rates from January 1, 2024, with a further step from January 1, 2025. The same report notes that WPL has no automatic retail fuel cost adjustment clause: fuel costs are forecast in each rate proceeding, and only costs outside a monitoring range set by the commission are deferred and settled later.

Rate increases for 2026 and 2027

The commission's next order came in December 2025. It authorized higher electric base rates for WPL from January 1, 2026 for the 2026 test year, and a second increase from January 1, 2027 for the 2027 test year, according to the same SEC filing. The approved amounts and the new tariff sheets are in the commission's case file for WPL.

EIA's monthly survey shows where prices have gone so far. Over the 12 months September 2025 to August 2026 WPL's residential customers paid an average of 18.93¢ per kWh, above the 2025 figure, and their average bill was $131.99. In August 2026, the average price was 18.76¢ per kWh, +3.9%² against the same month a year earlier; statewide, the August 2026 change was +5.3%⁴. All 2026 months are preliminary until EIA's annual survey replaces them.

Alliant Energy (WPL)Wisconsin average, all providers

Source: EIA-861M monthly sales and revenue by utility; EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential revenue divided by kWh in each month, as reported to EIA's monthly survey (EIA-861M; months since January 2026 preliminary).

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Month	Alliant Energy (WPL) (¢/kWh)	kWh per customer	Bill per customer
January 2025	18.28¢	795	$145.22
February 2025	18.47¢	678	$125.21
March 2025	18.52¢	609	$112.87
April 2025	19.02¢	543	$103.31
May 2025	18.95¢	547	$103.64
June 2025	18.22¢	783	$142.60
July 2025	17.89¢	968	$173.18
August 2025	18.05¢	862	$155.56
September 2025	18.59¢	640	$118.87
October 2025	19.02¢	591	$112.40
November 2025	18.83¢	614	$115.68
December 2025	18.54¢	775	$143.61
January 2026	18.82¢	801	$150.82
February 2026	19.19¢	629	$120.80
March 2026	19.30¢	609	$117.56
April 2026	19.75¢	548	$108.32
May 2026	19.40¢	586	$113.57
June 2026	19.12¢	710	$135.70
July 2026	18.42¢	1,027	$189.11
August 2026	18.76¢	837	$157.05

Wisconsin and Iowa: two Alliant utilities

Alliant Energy Corporation is a holding company whose two utilities are WPL in Wisconsin and Interstate Power and Light (IPL) in Iowa, each a direct subsidiary, as its SEC annual report describes. Both use the Alliant Energy name, but they file separate tariffs with separate regulators, and their prices moved in opposite directions in 2025:

Their positions at home differ even more. WPL's average sits close to Wisconsin's, while IPL's 2025 average was 30.5% above the Iowa average. MidAmerican Energy, which serves 51.0% of Iowa's residential customers, averaged 11.21¢ per kWh¹ that year.

Alliant Energy (IPL) (IA)17.77¢

Alliant Energy (WPL) (WI)18.47¢

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)
Alliant Energy (IPL) (IA)	17.77¢
Alliant Energy (WPL) (WI)	18.47¢

WPL and MGE around Madison

EIA's 2025 territory records list WPL in 35 Wisconsin counties, and in all 35 at least one other utility also reports customers. Dane County, home to Madison, has the most: 11⁷ distribution utilities, including WPL and MGE, the Madison utility. Their customers face a familiar trade-off between price and use. In 2025 MGE's homes paid more per kWh, 21.11¢ per kWh against WPL's 18.47¢ per kWh, but used only 505 kWh a month against 694 kWh, so MGE's average bill was $106.58 and WPL's $128.22¹. Neither company can be chosen: the commission's service territory maps show which utility serves a given address.

Alliant Energy (WPL) onlyAlliant Energy (WPL) and other utilitiesOther utilities

Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. EIA-861 2025 service territory: 35 counties. Counts whole counties even where the utility serves only part of one; check the utility's own service-area map for an address.

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County	Other utilities reporting service
Adams County	Adams-Columbia Electric Cooperative, Wisconsin Dells Electric Util, Pioneer Power and Light Co
Calumet County	We Energies, Wisconsin Public Service, City of Menasha, City of New Holstein
Columbia County	We Energies, Adams-Columbia Electric Cooperative, City of Columbus, Wisconsin Dells Electric Util, City of Lodi, Village of Pardeeville
Crawford County	Xcel Energy, Scenic Rivers Energy Cooperative, Vernon Electric Cooperative, Richland Electric Cooperative
Dane County	We Energies, MGE, Adams-Columbia Electric Cooperative, Sun Prairie Utilities, City of Stoughton, Rock Energy Cooperative, Village of Waunakee, Village of Mt. Horeb, Village of Black Earth, Village of Mazomanie
Dodge County	We Energies, Adams-Columbia Electric Cooperative, Hartford Electric, Waupun Utilities, City of Columbus, Hustisford Utilities, Juneau Utility Comm
Fond du Lac County	We Energies, Wisconsin Public Service, City of Plymouth, Waupun Utilities
Grant County	We Energies, Scenic Rivers Energy Cooperative, City of Fennimore, City of Boscobel, City of Cuba City, Village of Muscoda, Village of Hazel Green
Green County	Scenic Rivers Energy Cooperative, Rock Energy Cooperative, City of Evansville, Brodhead Water & Lighting Comm, Village of New Glarus
Green Lake County	Adams-Columbia Electric Cooperative, City of Princeton
Iowa County	Scenic Rivers Energy Cooperative, Village of Black Earth, Village of Muscoda
Jackson County	Xcel Energy, Riverland Energy Cooperative, Oakdale Electric Cooperative, Eau Claire Electric Cooperative, Clark Electric Cooperative, Jackson Electric Cooperative, City of Black River Falls, Village of Merrillan
Jefferson County	We Energies, Adams-Columbia Electric Cooperative, Lake Mills Light & Water, Jefferson Utilities, Waterloo Light & Water Comm
Juneau County	Oakdale Electric Cooperative, Vernon Electric Cooperative, City of New Lisbon, City of Elroy, Wonewoc Electric & Water Util
Kenosha County	We Energies
Lafayette County	Scenic Rivers Energy Cooperative, City of Cuba City, City of Shullsburg, Village of Hazel Green, Village of Benton, Village of Belmont, City of Argyle
Langlade County	Wisconsin Public Service
Manitowoc County	We Energies, Wisconsin Public Service, Manitowoc Public Utilities, Two Rivers Water & Light, City of Kiel
Marathon County	Wisconsin Public Service, Xcel Energy, City of Marshfield, Clark Electric Cooperative, Central Wisconsin Electric Cooperative, Taylor Electric Cooperative, Village of Stratford
Marquette County	Adams-Columbia Electric Cooperative, Pioneer Power and Light Co, Westfield Electric Company
Menominee County	Oconto Electric Cooperative
Monroe County	Xcel Energy, Oakdale Electric Cooperative, Vernon Electric Cooperative, Jackson Electric Cooperative, Village of Bangor, Village of Cashton
Oconto County	We Energies, Wisconsin Public Service, Oconto Electric Cooperative, Oconto Falls Water & Light Comm
Portage County	Wisconsin Public Service, Adams-Columbia Electric Cooperative, Wisconsin Rapids W W & L Comm, Central Wisconsin Electric Cooperative, Consolidated Water Power Co
Richland County	Scenic Rivers Energy Cooperative, Vernon Electric Cooperative, Richland Electric Cooperative, City of Richland Center, Village of Muscoda, Village of Viola
Rock County	We Energies, City of Stoughton, Rock Energy Cooperative, City of Evansville, Brodhead Water & Lighting Comm
Sauk County	Adams-Columbia Electric Cooperative, Oakdale Electric Cooperative, Vernon Electric Cooperative, Reedsburg Utility Comm, Richland Electric Cooperative, Wisconsin Dells Electric Util, Village of Sauk City, Village of Prairie Du Sac
Shawano County	We Energies, Wisconsin Public Service, Oconto Electric Cooperative, Central Wisconsin Electric Cooperative, Shawano Municipal Utilities, Village of Gresham
Sheboygan County	We Energies, City of Plymouth, City of Sheboygan Falls
Vernon County	Xcel Energy, Scenic Rivers Energy Cooperative, Vernon Electric Cooperative, Richland Electric Cooperative, City of Westby, La Farge Municipal Electric Co, Village of Viola
Walworth County	We Energies, Rock Energy Cooperative, City of Elkhorn
Waupaca County	We Energies, Wisconsin Public Service, Adams-Columbia Electric Cooperative, Central Wisconsin Electric Cooperative, New London Electric&Water Util, City of Clintonville
Waushara County	We Energies, Wisconsin Public Service, Adams-Columbia Electric Cooperative, Pioneer Power and Light Co
Winnebago County	We Energies, Wisconsin Public Service, City of Menasha
Wood County	Adams-Columbia Electric Cooperative, Oakdale Electric Cooperative, Wisconsin Rapids W W & L Comm, City of Marshfield, Clark Electric Cooperative, Consolidated Water Power Co

July is the expensive month

WPL homes use the most electricity in summer. Over the 12 months to August 2026, use per home ranged from 548 kWh in April 2026 to 1,027 kWh in July 2026, and the average bill in those two months from $108.32 to $189.11². Statewide, use per home in the peak month was 1.6 times⁴ that of the lowest month.

640Sep

591Oct

614Nov

775Dec

801Jan

629Feb

609Mar

548Apr

586May

710Jun

1,027Jul

837Aug

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	640	$118.87	18.59¢
October 2025	591	$112.40	19.02¢
November 2025	614	$115.68	18.83¢
December 2025	775	$143.61	18.54¢
January 2026	801	$150.82	18.82¢
February 2026	629	$120.80	19.19¢
March 2026	609	$117.56	19.30¢
April 2026	548	$108.32	19.75¢
May 2026	586	$113.57	19.40¢
June 2026	710	$135.70	19.12¢
July 2026	1,027	$189.11	18.42¢
August 2026	837	$157.05	18.76¢

Outages, with a caveat

WPL reported 96 minutes without power per customer in 2025, including major events, fewer than the Wisconsin average of 230 minutes, and 75 minutes excluding major event days, with 0.79 interruptions per customer. WPL measures under another method (not IEEE 1366), while MGE, We Energies and Wisconsin Public Service report under IEEE 1366, so the comparison is approximate. Wisconsin's statewide figure excluding major event days was 84 minutes⁹.

Smart meters, time-of-use and rooftop solar

Advanced meters were installed at 99.6% of WPL's residential meters in 2025. Time-based pricing is still rare: 5,123 homes, 1.2% of the total, were on a time-of-use rate, against 4.1%¹⁰ at the Iowa sister utility. The time-of-use guide explains when such a rate lowers a bill.

Rooftop solar reaches about as many homes: 5,447 net-metered residential installations with 38.5 megawatts of capacity, 12.4 per 1,000 customers in 2025. MGE had 18.0 per 1,000, We Energies 6.6, Wisconsin Public Service 5.2 and IPL in Iowa 29.5¹⁰.

Business customers and help with bills

In 2025, WPL's 63,796 commercial customers paid an average of 13.63¢ per kWh, with an average monthly bill of $431.00, and its 1,164 industrial customers 9.73¢ per kWh. The average across every class and all 505,706 accounts was 13.41¢ per kWh¹.

Households behind on bills can apply for energy assistance; Wisconsin's federal LIHEAP allocation for fiscal year 2026 was $112.8 million¹¹, and the help paying guide lists the programs. For every utility in the state, see electricity in Wisconsin.