Wisconsin Solar Incentive Programs

12 yr
Avg. payback
$950/yr
Avg. annual savings
None
State tax credit
retail
Net metering rate
Federal tax credit update: The 30% residential solar tax credit (Section 25D) ended for systems whose installation was completed after December 31, 2025, under Public Law 119-21. Systems whose installation was completed in 2025 can still claim it on a 2025 return. New 2026 installations do not qualify for homeowners who buy. What changed

Focus on Energy Rebate

Wisconsin's Flagship Solar Incentive

Focus on Energy, Wisconsin's statewide energy efficiency program funded by utility customers, offers $600 per kW of installed capacity, up to $2,400 for single-family homes. This is a direct rebate applied to your installation cost, not a tax credit. Funding is limited and distributed first-come, first-served each program year.

Standard Residential

$2,400
$600/kW, capped at 4 kW of rebate. A 4 kW system captures the full $2,400; a 6 kW system still gets $2,400 (not $3,600). Apply within 60 days of installation. Focus on Energy pages list different final dates (January 31, 2027 and August 31, 2026); confirm your deadline with Focus on Energy (800.762.7077).

Rural / Agricultural Bonus

$300+
Focus on Energy currently lists one residential solar incentive: $600 per kW up to $2,400. Agricultural producers should check Focus on Energy's business renewables offerings.

How to Claim

5 Steps
1. Verify your utility participates. 2. Reserve funds online before install. 3. Use a Focus on Energy Trade Ally contractor. 4. Install system. 5. Submit rebate application within 60 days. Rebates cannot exceed total project costs.
Key Requirement: Reserve Funds Before Installing

Unlike some programs where you apply after installation, Focus on Energy requires you to reserve your rebate funds online before work begins. Fund availability fluctuates. Do not sign an installation contract without first confirming your reservation at focusonenergy.com or calling 800.762.7077.

Net Metering: Know Your Utility

Wisconsin Net Metering Varies Significantly By Utility

Wisconsin does not have a uniform statewide net metering rate. All investor-owned utilities must offer net metering for systems up to 20 kW, but how they compensate excess generation differs. Monthly credits at retail rates are common, but excess beyond your monthly usage at most utilities is paid at avoided cost, typically 2 to 5¢/kWh, far below the 15 to 18¢/kWh retail rate.

Utility Monthly Credit Excess Generation Rating
Xcel Energy Retail rate, carries over monthly Year-end payout at retail if credits < $2; rollover otherwise Best
We Energies Retail rate up to monthly usage ~$0.042/kWh buyback Moderate
Wisconsin Public Service Retail rate up to monthly usage ~$0.047/kWh (blended formula) Moderate
Madison Gas & Electric Retail rate up to monthly usage ~$0.038/kWh Moderate
Alliant Energy Retail rate up to monthly usage ~$0.030/kWh (avoided cost) Moderate
Electric Co-ops Varies, not subject to PSC NM rules Negotiated individually Check with co-op
Design Strategy: Right-Size to Your Usage

Because excess generation earns only 2 to 5¢/kWh at most Wisconsin utilities, the optimal system covers ~95% of annual consumption without significant surplus. Oversizing your system to export power is economically inefficient. Use 12 months of utility bills to size precisely, and favor systems that maximize self-consumption.

Tax Exemptions

Sales Tax Exemption

5% Off
Wisconsin exempts solar energy equipment from the 5% state sales tax under §77.54. Systems producing at least 200 watts of electricity qualify. On a $25,000 system, this saves $1,250 at point of purchase, no forms required.

Property Tax Exemption

Full Value
Solar installations are exempt from property tax increases under §70.111(18). File Form PR-303 with your local assessor by March 1 to claim the exemption. Adding $20,000 of solar value to your home does not increase your property tax bill.
No State Solar Income Tax Credit

Wisconsin does not offer a state income tax credit for solar installations. Between the Focus on Energy rebate ($2,400), sales tax exemption (~$1,250 on average), and property tax exemption, Wisconsin still provides solid direct savings, just not via the income tax route.

Milwaukee Shines Loan Program

Milwaukee Residents: Additional Financing Available

Milwaukee homeowners can access the Milwaukee Shines solar loan program, up to $25,000 at prime rate + 0.25% over 15 years. This is one of the most competitive solar loan programs in the state and stacks with the Focus on Energy rebate. Visit the City of Milwaukee's energy office for current application details.

Federal Tax Credit (ITC)

Federal Residential ITC (Section 25D) Has Expired

The federal residential solar Investment Tax Credit (ITC) under IRC Section 25D expired on December 31, 2025. Systems installed in 2026 and beyond do not qualify. No extension has been enacted as of October 2026. Wisconsin homeowners must rely on the Focus on Energy rebate, tax exemptions, and any applicable federal commercial incentives (the Section 48E clean electricity investment credit applies to businesses and third-party-owned systems only).

Step-by-Step: Claiming Wisconsin Solar Incentives

1

Verify Utility Participation in Focus on Energy

Go to focusonenergy.com and confirm your electric utility participates in the rebate program. Electric cooperatives may not be covered. Also note your utility's net metering policy, this affects system sizing.

2

Reserve Rebate Funds Before Signing a Contract

Submit an online reservation at focusonenergy.com before installation begins. Funding is limited annually and is first-come, first-served. Do not sign a solar contract until your reservation is confirmed.

3

Choose a Focus on Energy Trade Ally Contractor

The program requires installation by an approved Trade Ally contractor. Use the installer search tool at focusonenergy.com to find qualified installers in your area.

4

File for Property Tax Exemption

After installation, file Form PR-303 with your local assessor before March 1 of the year following installation. This prevents your solar system value from being added to your property assessment.

5

Submit Rebate Application Within 60 Days

After installation is complete, submit the Focus on Energy rebate application within 60 days and no later than January 31, 2027 for 2026 installs. Include all required documentation (contractor invoices, system specs).

Wisconsin Solar Incentives at a Glance

IncentiveAmountStatus
Focus on Energy Rebate $600/kW, up to $2,400 Available (limited funds)
Rural / Agricultural Bonus Additional $300+ (ZIP-code based) Eligible areas
Net Metering Retail credit (monthly); excess at ~2 to 5¢/kWh Varies by utility
Sales Tax Exemption 5% on all solar equipment ≥200W Automatic at point of sale
Property Tax Exemption Full value, no increase to assessment File Form PR-303 by March 1
State Income Tax Credit … Not available in Wisconsin
Federal ITC (Section 25D) … Expired December 31, 2025
Milwaukee Shines Loan Up to $25,000 at prime+0.25%, 15 years Milwaukee residents only
Estimated Payback 8 to 12 years (varies by utility/system size) Competitive for Midwest

Ready to Go Solar in Wisconsin?

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