2025 Solar Incentives Guide for Sun Prairie, WI - Tax Credits & Rebates

In this guide, we'll cover the latest solar incentives and rebates available in Sun Prairie.

You'll learn about:

  • Local & State Solar Incentives
  • Federal Tax Credits (Updated for 2024 and beyond)
  • Ways to optimize your solar investment

Solar installers are experts in maximizing your solar tax credits and rebates.
Get a free quote from one of our trusted Sun Prairie solar installers to see how much you can save.

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated January 24, 2025

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We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

What Solar Tax Credits, Incentives, and Rebates are Available in Sun Prairie?

Renewable Energy Sales Tax Exemptions

Incentive Type:
Sales Tax Incentive
100% exemption from sales and use tax for eligible purchases

Renewable Rewards Program

Incentive Type:
Rebate Program
Solar PV: Residential - $200 per kW
Business - 0-5 kW: $200 per kW
5-10 kW: $1000 + $150 per kW over 5
10-100 kW: $1750 + $125 per kW over 10
100-300 kW: $13000 + $100 per kW over 100
300-500 kW: $33000 + $85 per kW over 300

Biogas, Solar, and Wind Energy Equipment Exemption

Incentive Type:
Property Tax Incentive
100% of the value added by an eligible renewable energy system

Federal Residential Renewable Energy Tax Credit

Incentive Type:
Personal Tax Credit
30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

Source: https://www.dsireusa.org/


Solar incentives are intended to make renewable energy usage more affordable through financial incentives for individuals who install solar panels on their homes. Different types of incentives, like discounts, cash back or monthly utility bill credits, may be available to you. Certain incentives may be handled by the state of Wisconsin, by your utility company or by county or municipality, while others are federal. You might qualify for any of the following types of solar incentives:

  • Tax Exemptions: Sales tax exemptions go into effect at the point of sale for your solar system. Property tax exemptions allow you to ignore the added value of your solar system when you're calculating how much property tax you need to pay on your house.
  • Net Metering: You can sign a net metering contract with your Sun Prairie utility company. This agreement may apply to all or a percentage of the excess electricity your solar panels generate. Your utility company will then subtract this value from your utility bill each month.
  • Tax Credits: Tax credits are dollar-for-dollar reductions (not deductions) in how much in taxes you owe the federal government.
  • Rebates: Rebates, or partial refunds after a purchase, are usually applied prior to any solar tax credits being calculated. These rebates might be given by your local utility company, by your county or by your state.
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Federal Solar Incentives

When thinking about solar incentives, you probably think of federal incentives first. The Federal Solar Investment Tax Credit, or ITC, is probably the most well-known federal solar incentive. The ITC provides you with a tax credit for a set percentage of the cost of your solar system.

The ITC is applied to the total cost of solar panel installation, including the panels themselves as well as equipment, accessories and labor. You can claim this credit for panels installed after January 1, 2006, on a primary or secondary residence that you own, as long as it is located in the United States. From its original value of 30% of the total cost, the credit has fluctuated slightly between 26-30%, and you may qualify for varying percentages depending on when your project was completed. There is no maximum claim amount.

Wondering how the ITC applies to your specific situation? Reach out to your local Sun Prairie solar panel installation expert to get more information.

The Inflation Reduction Act, passed in August 2022, added more provisions to the ITC (as well as renaming it to the Clean Energy Credit). Homeowners can now qualify for a credit of 30% of the total costs of solar system installation for projects started after January 1, 2022, and completed before the end of 2032. This percentage will then decrease yearly until the Clean Energy Credit expires in 2035. The program expansion also makes credits for energy storage systems even easier to claim, starting in 2023.

More information about the new Inflation Reduction Act can be found here. The best way to fully understand how the new Clean Energy Credit will apply to you is to reach out to your local Sun Prairie solar panel installation expert with your questions.

State & Local Solar Incentives

In addition to federal solar incentives, there are often also state ones. Rebates, tax credits and more might be available at a more local level. Incentives might be handled by your county or municipality, or by the state of Wisconsin. Certain incentives are available for only a limited time, while others are ongoing.

Next Steps for Installing Solar in Sun Prairie

The nationwide use of solar energy has gone up significantly in the past 15 years, in part thanks to the increase in availability of solar incentives. You can obtain these incentives from your local utility company, the Wisconsin government or the federal government. When you're prepared to make the change to solar energy, reaching out to your local Sun Prairie solar panel installation expert is a great first step.

EcoWatch's Sun Prairie, WI Solar Incentives FAQs

How can I find out if I qualify for specific solar incentives?

It's a smart idea to get in touch with your local Sun Prairie solar installer for a better understanding of which incentives your project will qualify for. Typically, solar incentives apply to new solar panel systems installed on property you own (in the U.S.) between the dates specified by the incentive. Some incentives, such as those offered by the government of Wisconsin, may have additional requirements.

What are the environmental benefits of switching to solar?

Solar energy is a renewable energy source — by switching where you get your energy, you can help lessen the strain on our planet's resources. A solar system can also reduce your home's CO2 emissions by 500 pounds annually, or around 12,000 pounds over 20 years.

Can I qualify for incentives both towards the up-front cost of solar panels, and later as reimbursement?

The order in which incentives are applied may vary depending on which incentives you are claiming but typically yes, you can receive multiple types of incentives for your solar project. Check with your solar installer or a local tax professional to verify you are claiming all possible incentives and applying them in the correct order.

Can I use both solar and another type of renewable energy to power my home?

Yes, you can employ multiple types of renewable energy to power your home, such as a combination of geothermal and solar. You can also combine renewable energy generation with a backup source of non-renewable energy. Be sure to discuss your proposed plan with your local Sun Prairie solar installation expert, so that you understand what you'll need and what kinds of incentives you might or might not qualify for.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert's opinion on the top solar companies featured here, follow this link.

Solar incentive research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.

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