Alliant Energy (Wisconsin Power & Light) and solar
Alliant Energy (Wisconsin Power & Light) is an investor-owned utility serving about 440,746 homes in Wisconsin. Here's what its rates and export rules mean for solar: for a typical customer, solar is worth it.
- Average price (2026 est.)
- 19.1¢2% above Wisconsin average
- Typical bill
- $133694 kWh a month
- Exports credited
- RetailFull retail net metering
- Typical payback
- 12.4 yrs5.6 kW, cash
Export rules for Alliant Energy (Wisconsin Power & Light) customers
Full retail net metering, monthly netting.
Retail up to monthly usage; excess bill credit (2023 hourly netting proposal outcome unverified).
Solar for a typical Alliant Energy (Wisconsin Power & Light) home
| System | 5.6 kW (89% of 694 kWh/month) |
|---|---|
| Cost | $20,300, $17,900 after incentives |
| First-year savings | $1,426 |
| Payback | 12.4 years |
| 25-year net | $22,971 |
Uses the utility's average price.
Solar adoption
- Homes with solar (2025)
- 5,447
- Share of customers
- 1.2%
- Residential solar capacity
- 38 MW
- Residential customers
- 440,746
EIA-861, 2025.
Cities served
Questions about Alliant Energy (Wisconsin Power & Light) and solar
Does Alliant Energy (Wisconsin Power & Light) have net metering?
Retail up to monthly usage; excess bill credit (2023 hourly netting proposal outcome unverified).
How much does electricity cost with Alliant Energy (Wisconsin Power & Light)?
Residential customers paid an average of 18.5¢ per kWh in 2025 (EIA), about 19.1¢ adjusted to 2026. The typical home uses 694 kWh a month, a bill of about $133.
Is solar worth it with Alliant Energy (Wisconsin Power & Light)?
For a typical customer, solar is worth it: a 5.6 kW system costing about $17,900 pays back in about 12.4 years, with $22,971 net over 25 years.
How many Alliant Energy (Wisconsin Power & Light) customers have solar?
About 5,447 homes had net-metered solar at the end of 2025, roughly 1.2% of residential customers (EIA-861).
Legal name: Wisconsin Power & Light Co (EIA ID 20856). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026.