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Full Spectrum Solar

Bringing reliable solar power to Wisconsin since 2002

Full Spectrum Solar is a locally-owned solar power contractor serving residential and commercial customers in southern Wisconsin, including Madison, Waukesha, and Milwaukee.

We offer complete turn-key installation of solar panels and solar electric systems for homes, businesses, public authorities, and community organizations.

With a growing staff of professionals and over 20 years of experience, we can design and install solar electric systems of any size.

We are committed to reducing the risk of COVID-19 while still helping people to go solar.

>> Review the Full Spectrum Solar COVID-19 Response and Customer Assurance Plan. <<

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Learn how solar can save you money and energy!

Barn with solar panels installed

Advantages of photovoltaic (PV) solar installation


  • Often produces more power than the site uses during the day

    The excess energy is feed back into the grid.

  • PV technology continues to become cheaper and more efficient

    While fossil fuels generally become more difficult and costly to extract.

  • There are no moving parts

    the most reliable and efficient renewable energy system available

  • Pricing on solar panels and inverters is near the lowest it has ever been.

    Competition among manufacturers is intense. There’s never been a better time to go solar!


Learn more

Commercial Project Gallery

Commercial Project

We are recently had panels installed on our roof that is not exactly ideal for solar. Project manager Mike did a great job of coming up with a configuration that make the most of what we had, patiently answered dozens of emails and helped with adjustments even after the system was signed-off on.

Jill Kurth

The whole process from assessment, bidding and installation went very smoothly. Have had my system running for one year with no issues.

Mark Nesslar

We had Full Spectrum install solar panels on our home this summer and they did a great job. They were helpful at each step of the process and left no question unanswered. The installation crew was friendly and made sure to clean up once they were done. I would not hesitate to hire Full Spectrum again.

Brent Valentine