2026-2027 electric rate increase (Wisconsin rate review settlement)
Base rate case · Electric
Typical residential bill
Not stated for a specific usage level. Any figures the sources give are in the summary below.
- Filed
- April 2025
- Decided
- 2025
- Effective
- January 1, 2026
- Requested increase
- $201.9 million
- Approved increase
- $144.1 million
- Docket
- 6680-UR-125
Wisconsin Power and Light asked in April 2025 for about $202 million in electric increases over 2026-2027. The PSC approved a unanimous settlement with a 9.8% return on equity: $69 million from Jan. 1, 2026 and another $75 million from Jan. 1, 2027. Alliant estimates the average residential bill rises about $4/month in 2026 and about $8/month more in 2027.
Utility's stated reasons
- Wind farm refurbishments and energy storage
- Upgrades at existing gas-fired power plants
- Solar project costs above previously approved estimates
- Electric distribution investments
Sources (7) · Verified against regulator or utility filings
- Form 10-K for the fiscal year ended December 31, 2025Alliant Energy Corporation (SEC Form 10-K) · Utility filing · Feb 20, 2026 · accessed Oct 5, 2026
- Form 10-Q for the quarter ended June 30, 2026Alliant Energy Corporation (SEC Form 10-Q) · Utility filing · Jul 31, 2026 · accessed Oct 5, 2026
- Wisconsin Rate Review for 2026 and 2027Alliant Energy · Utility website · accessed Oct 5, 2026
- Alliant Energy submits unanimous settlement agreement on future Wisconsin ratesAlliant Energy · Utility press release · Sep 3, 2025 · accessed Oct 5, 2026
- Alliant Energy Rate Hike for 2026-2027Citizens Utility Board of Wisconsin · Report · accessed Oct 5, 2026
- Alliant Energy Hiking Wisconsin Utility Prices in 2026 and 2027Seehafer News · News · Dec 1, 2025 · accessed Oct 5, 2026
- State regulators approve rate hikes for 3 Wisconsin utilitiesWisconsin Public Radio · News · Nov 25, 2025 · accessed Oct 5, 2026
Last verified Oct 5, 2026