Wisconsin Power and Light Company

Wisconsin Power and Light's optional time-of-use rates are the main tool for EV owners who want to cut charging costs. WPL, an Alliant Energy company, offers two such plans, Nights and Weekends and Peak Nights and Weekends. On both, energy costs least between 11 p.m. and 6 a.m. and all weekend, so charging an EV overnight is where the savings come from. Peak Nights and Weekends adds a weekday demand charge of $5.88 per kilowatt for the highest hourly use between 10 a.m. and 8 p.m. Monday through Friday, so it suits households that can keep daytime use low.

WPL pairs these rates with rebates. Residential customers get an instant rebate at checkout on an eligible Level 2 charger bought through the Alliant Energy Marketplace; Alliant's page does not state the dollar amount, so check the Marketplace listing. WPL's earlier commercial and industrial charger rebate is no longer offered. Any customer can also enroll an EV or Wi-Fi Level 2 charger in Smart Hours, which works alongside whichever rate plan you choose.

WPL is a regulated investor-owned utility overseen by the Public Service Commission of Wisconsin, so its rates and EV programs are set through PSC dockets rather than a competitive retail market. Alliant's 2026 and 2027 rate settlement lists EV rebates among its customer options, which means program terms can shift between rate cases. Confirm current amounts on Alliant Energy's Wisconsin pages before you buy.