LNT · 10-Q · 2026Q3 · Full report

Wisconsin Capacity Cost Legislation

ALLIANT ENERGY CORP · 2026-10-30 · Importance 34 · Surprise 42

Wisconsin enacted 2025 Wisconsin Act 193 in April 2026, requiring utilities to include capacity costs and revenues in annual fuel cost plans. The law requires approved plans to account for both the cost of purchasing capacity and revenue from selling it. It applies to fuel cost plans filed on or after January 1, 2027, and affects WPL and Alliant Energy.

Key facts

• In April 2026, Wisconsin enacted 2025 Wisconsin Act 193, requiring utilities’ annual fuel cost plans to include capacity costs and revenues; it applies to plans filed on or after January 1, 2027.