Wisconsin Solar Panels

Wisconsin’s Focus on Energy program has significantly increased its residential solar rebate for 2026, raising it from a flat $300 per system to $600 per kilowatt (kW) of installed capacity, with a maximum rebate of $2,400. For example, a 4 kW system would qualify for the full $2,400 rebate. This increase was made in direct response to the elimination of the federal residential solar tax credit, helping to offset costs for Wisconsin homeowners going solar in 2026.

To qualify, you must install a solar electric system on a residential property (new or existing construction) with a capacity of at least 0.5 kW DC. The system must be oriented within 135 degrees of due south, installed at a tilt between 5 and 50 degrees, and have less than 15% shading based on an industry-accepted analysis tool. Funding is limited and awarded on a first-come, first-served basis each program year.

Applications must be submitted within 60 days of completed installation and no later than August 31, 2026. Systems installed between January 1, 2026 and June 30, 2026 are eligible under the 2026 program year. Contact Focus on Energy at (800) 762-7077 or visit their website to apply.

Wisconsin’s Focus on Energy program offers enhanced solar rebates for non-residential customers in 2026. Businesses and commercial properties can receive $600 per kW for the first portion of their system (up to $2,400), then $50 per kW for additional capacity, up to a total maximum of $25,000. This tiered structure rewards both smaller and larger commercial installations.

Agricultural producers receive additional support: they can qualify for a $50 per kW match of up to $10,000 on top of the standard commercial rebate, making solar especially attractive for Wisconsin farms. Buildings enrolled in Focus on Energy’s Energy Design Assistance or Energy Design Review programs may also qualify for a $2,500 Solar Ready Buildings incentive to prepare new construction for future solar installation.

Funding is limited and available on a first-come, first-served basis. Applications must be submitted within 60 days of completed installation. Visit the Focus on Energy business renewables page or call (800) 762-7077 for program details and to begin the application process.

Wisconsin provides a full sales tax exemption on the purchase of solar energy systems and related equipment. Since Wisconsin’s state sales tax rate is 5%, this exemption can save homeowners an average of around $910 on a typical residential solar installation — and more on larger systems. The exemption applies automatically at the point of sale, so no separate application is required.

To qualify, the solar energy system must be capable of producing at least 200 watts AC per day. This threshold is easily met by virtually all modern residential and commercial solar installations. The exemption covers solar panels, inverters, racking, and other system components purchased as part of the installation.

This exemption is a permanent feature of Wisconsin tax law and is available to all Wisconsin residents and businesses purchasing qualifying solar equipment. It applies in addition to other state and local incentives, helping to reduce the upfront cost of going solar.

When you install solar panels on your Wisconsin home, the added value to your property is completely exempt from general property taxes. This 100% property tax exemption has been in effect since January 1, 2014, and means that even though solar can significantly increase your home’s market value, your annual property tax bill will not increase as a result of the installation.

For a typical Wisconsin homeowner, this can translate to hundreds of dollars in savings every year over the 25–30 year life of a solar system. The cumulative long-term savings from this exemption can rival or even exceed the value of upfront rebates, making it one of the most financially significant solar incentives in the state.

The exemption applies automatically — no special application is required beyond standard property assessment processes. It is available statewide to all Wisconsin residential and commercial property owners who install qualifying solar energy systems.

The federal Residential Clean Energy Credit (Section 25D) provides a 30% tax credit for the cost of new battery storage systems with a capacity of 3 kWh or greater. Importantly, this credit applies to standalone battery installations — you do not need to pair the battery with solar panels to qualify. This makes it a valuable incentive for Wisconsin homeowners looking to add energy storage for backup power or grid independence.

Under current IRS guidelines for 2026, both homeowners and businesses can claim this 30% credit on qualifying battery storage systems. The credit directly reduces your federal income tax liability dollar-for-dollar. For example, a $10,000 battery installation would yield a $3,000 federal tax credit. Any unused credit may be carried forward to future tax years.

To claim the credit, complete IRS Form 5695 and submit it with your federal tax return for the year the battery system was placed in service. Keep all documentation from your installer, including itemized costs. Note that while the residential solar ITC has been eliminated, the battery storage credit remains available — consult a tax professional to confirm your eligibility based on the latest IRS guidance.

Wisconsin law requires all investor-owned and municipal utilities to offer net metering to solar customers. Net metering allows you to send excess electricity your solar panels generate back to the grid in exchange for credits on your utility bill, effectively using the grid as a battery. However, the specific terms — including credit rates and rollover policies — vary significantly by utility. Xcel Energy offers the strongest policy, crediting excess generation at the full retail rate with monthly rollover and an annual cash-out for remaining credits. Madison Gas & Electric (MGE), We Energies, Wisconsin Power and Light (Alliant Energy), and Wisconsin Public Service (WPS) generally credit excess generation at the lower avoided-cost rate rather than the retail rate.

For Xcel Energy customers, systems up to 100 kW are eligible, credits roll over month-to-month at the retail rate, and any remaining credits at year-end are paid out as a check (at a weighted wholesale rate). For We Energies, Wisconsin Power and Light, and WPS customers, systems up to 20–300 kW are eligible depending on the utility, but excess monthly generation is credited at the avoided-cost rate (lower than retail), with a check issued when credits exceed $100 in value.

Because Wisconsin’s net metering policies are not uniformly strong across all utilities, pairing your solar system with battery storage can help you maximize self-consumption and reduce reliance on lower-value grid credits. Contact your specific utility for the exact net metering tariff and interconnection requirements that apply to your home.

PowerUp Wisconsin, formerly known as Solar for All, is a federally funded grant program administered by the Wisconsin Economic Development Corporation (WEDC). The program was awarded $62,450,000 through the U.S. Environmental Protection Agency’s Solar for All competition, with an additional $62,330,000 awarded to the Midwest Tribal Energy Resources Association, also headquartered in Wisconsin. The goal is to dramatically expand solar access for low-income and disadvantaged communities across the state.

The program is designed to ensure that eligible participants face limited or no upfront costs to go solar. It targets approximately 15,000 Wisconsin homes through a combination of single-family rooftop solar, multifamily solar, and community solar projects. Priority is given to households in low-income or marginalized communities and lower-income zip codes.

Program funding was anticipated to begin in late 2025, though as of early 2025 there was some uncertainty regarding federal funding availability due to a federal funding freeze. Interested Wisconsin residents — particularly those in income-qualified households — should monitor the WEDC website for the latest program status, eligibility details, and application information.

The USDA Rural Energy for America Program (REAP) provides grants and loan guarantees to agricultural producers and rural small businesses in Wisconsin to help finance renewable energy systems, including solar. REAP grants can cover up to 25% of total eligible project costs, and loan guarantees can cover up to 75%, meaning a qualifying project could receive combined funding covering the majority of its cost.

To be eligible, applicants must be agricultural producers (with at least 50% of gross income from agricultural operations) or small businesses located in eligible rural areas. The program is administered by the USDA Rural Development office and is available on a competitive basis, with applications accepted on a rolling basis throughout the year.

REAP is particularly valuable for Wisconsin farmers and rural entrepreneurs looking to reduce energy costs with solar. Grant amounts vary based on project size and available funding. Contact your local USDA Rural Development office or visit the USDA website for current application windows, funding availability, and eligibility requirements.

Wisconsin nonprofit organizations have access to a unique in-kind solar panel grant program through RENEW Wisconsin, made possible by the Couillard Solar Foundation. For nonprofits installing solar systems smaller than 75 kW, the program can award up to 50% of the required solar panels, capped at 75 panels (approximately a $15,000 value). For larger systems of 75 kW or more, nonprofits can receive up to 50% of required panels, capped at 150 panels (approximately a $30,000 value).

This program is specifically designed to help mission-driven organizations — such as charities, houses of worship, community centers, and social service agencies — reduce the upfront cost of going solar. By receiving panels directly rather than cash, nonprofits can significantly lower their installation costs and begin generating clean energy savings immediately.

Wisconsin schools and colleges may also be eligible for a separate in-kind module grant of up to 50 kW DC per building (valued at approximately $20,000). Nonprofits interested in applying should visit the RENEW Wisconsin website for current program guidelines, application requirements, and deadlines.

Milwaukee Shines is a local program designed to accelerate solar adoption in the Milwaukee area by organizing group-buy solar purchasing programs. By aggregating demand from multiple homeowners, the program negotiates lower prices with vetted solar installers — passing the savings directly to participants. This can meaningfully reduce the installed cost of a residential solar system beyond what an individual homeowner could negotiate alone.

In addition to group purchasing, Milwaukee Shines sponsors a low-interest solar loan program with up to $2 million in available funding. Loans are available to homeowners within Milwaukee city limits, with a maximum loan amount of $25,000 and repayment terms of up to 15 years. The low interest rates make financing a solar system more accessible and affordable for Milwaukee residents who may not have the upfront capital for a cash purchase.

This program is specifically available to homeowners within the City of Milwaukee. Interested residents should contact Milwaukee Shines directly for current program availability, loan terms, and how to participate in the next group-buy cohort.