Our Experience

In solar, experience matters. Having spent more than 20 years constructing over 1,250 clean energy projects, we’ve learned a thing or two. Whether you are putting a system on your home or a large building, you only get one chance to do it right. Tap into our experience and contact a solar expert today.

Our Credentials


We operate with a triple bottom line commitment to people (our employees and their families, our clients and residents of the communities where we do business), planet (we appreciate the wonders of nature and believe that a habitable planet is worth fighting for) and profit (generating capital to keep increasing our impact and revenue to share among our team and partners).


Better Business Bureau

The last thing we like to hear from customers is that they had a bad experience with another solar company. Solar is a competitive market and there are many companies out there who are in it for the wrong reasons. Third Sun Solar has been a member with the BBB for 18 years, has an A+ rating, and many reviews from happy customers. 


NABCEP Solar PV Installation Professionals

NABCEP (North American Board of Certified Energy Practitioners) is the “gold standard” certification in the solar industry. Third Sun Solar is proud to have Certified Installation Professionals on staff.  Third Sun Solar President, Geoff Greenfield, is the Vice-Chair of the NABCEP Board of Directors.



Amicus Solar is a purchasing cooperative made up of leading solar installers with a like-minded approach to business.  Membership in Amicus Solar allows Third Sun Solar to achieve “scale” while still maintaining nimbleness, customer focus and “family business feel” of a smaller local company.

Our Work

Check out the projects we’ve completed for homeowners, commercial customers, and more. We’d love for your solar project to be next. Give us a call today.

Impact Reports

Interested in learning more about our work? We’d be happy to help! Contact us today to speak with a member of the Third Sun Solar team.