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Business Details
26 Years
experience
Trusted Solar Energy Solutions for Homes and Businesses
Third Sun Solar has been a trusted leader in solar energy solutions since 2000, delivering innovative residential and commercial solar installations across Ohio and the Midwest. Our team of NABCEP-certified professionals combines 25+ years of solar expertise with 74 years of construction heritage from Kokosing Inc., ensuring unmatched reliability and quality. We prioritize safety, customer satisfaction, and community impact, operating with a mission-driven approach to build a clean energy future. As Ohio's longest-standing full-service solar installer, we leverage our membership in the Amicus Solar Cooperative to offer competitive pricing without compromising personalized service.

Our commitment to sustainability extends to our carbon-neutral fleet and zero-waste initiatives, reflecting our belief that business should be a force for good. With a focus on long-term partnerships, we empower clients to achieve energy independence while creating local jobs and supporting environmental stewardship.
Services
Residential Solar Commercial Solar EV Charging Solar Energy Storage Operations and Maintenance
Details
  • Year established: 2000
Highlights and features
  • We offer 25+ years of solar installation expertise and 74 years of construction experience.
  • Our in-house team designs all projects with proven technical and financial expertise.
  • We are Ohio's longest-standing full-service solar installer with a 100% referral-based business model.
  • Our Amicus Solar Cooperative membership provides national-scale buying power with local service.
  • We maintain a safety-first culture and commitment to community impact through clean energy jobs.
Associations and certifications
  • NABCEP
Services
Residential Solar
Custom solar energy systems for homeowners, providing clean power and long-term savings. Our NABCEP-certified team designs installations tailored to individual energy needs and budgets. Systems include monitoring tools for energy control and optional battery storage for outage protection.
Commercial Solar
Tailored solar solutions for businesses and organizations to reduce energy costs and achieve sustainability goals. Services include system design, financing options, and installation by experienced professionals. Enhances corporate social responsibility while providing predictable energy expenses.
EV Charging
Installation of EV charging stations for residential and commercial properties. Solutions support clean transportation adoption while integrating with solar energy systems. Professional setup ensures compliance with electrical codes and optimal charging efficiency.
Solar Energy Storage
Battery systems to store excess solar energy for use during outages or high demand periods. Increases energy independence and maximizes solar investment returns. Compatible with existing and new solar installations for continuous power availability.
Operations and Maintenance
Comprehensive O&M services ensuring optimal system performance throughout its lifecycle. Includes regular inspections, performance monitoring, and prompt repair services. Maintains warranty compliance and maximizes energy production efficiency for residential and commercial systems.
People
Geoff Greenfield
Co-Founder
Co-founded Third Sun Solar in 2000 after building a sustainable off-grid home. Leads strategic direction while maintaining commitment to clean energy values. 20+ years of solar industry leadership experience.
Michelle Greenfield
Co-Founder
Co-founder instrumental in establishing Third Sun Solar's community-focused approach. Drives initiatives for environmental stewardship and employee development. 25+ years of experience in renewable energy sector leadership.
Questions
How much can I save with solar panels?
Savings vary by energy usage and system size, but most homeowners reduce electric bills by 50-100%. Our consultants provide personalized savings estimates during free evaluations.
What financing options are available?
We offer zero-down loans, cash purchases, and lease options. Our team helps determine the best financial solution based on your specific energy needs and budget.
How long does installation take?
Residential installations typically complete in 2-3 days after permitting. Commercial projects vary by system size, with most completing within 1-2 weeks after approvals.
Do you offer battery storage?
Yes, we provide battery storage solutions that work with solar systems to provide backup power during outages and optimize energy usage patterns for maximum savings.
What warranties are included?
We offer comprehensive warranties covering equipment (10-25 years) and workmanship (10 years). Extended warranty options available for added protection and peace of mind.
How does net metering work?
Excess solar energy feeds back to the grid for credits through your utility company. These credits offset nighttime or cloudy day energy usage, maximizing your system's financial benefits.
Reviews (5)
David Warrington
Mar 17, 2022 Report
My research into Third Sun Solar indicated a company with extensive experience in residential photovoltaic solar systems AND extensive information on their website and on YouTube about solar systems. My online searches for reviews and my research on the Better Business Bureau website found virtually nothing negative about the company. Our experience, from receiving a quotation to the final activation of the system, confirmed my research and was all very positive.

We never felt any high-pressure sales tactics, they answered all of our questions promptly and in a manner we could understand. The installation crew was friendly and very capable; they were careful, neat, and respectful of our home and the job. Third Sun Solar handled ALL of the paperwork with our town and utility service, including the 28-page application packet with the city. They handled the required inspections and all follow-up adjustments requested.

If you are going solar, we not only would strongly encourage you to consider Third Sun Solar, we think you would make a mistake by not including them among the companies you ask to quote on your installation.
Mark Bacon
Feb 13, 2022 Report
They do their installs with their own crews who are very knowledgeable, polite and neat. They've installed my solar panels, power wall and Tesla charger. I believe their pricing is competitive
Brian Brinkman
Nov 21, 2021 Report
Third Sun walked us through every step of the process. Quick to respond to any question or concern. Also helped navigate the infrastructure needed as well as the utility hoop jumping! Thx for making a 20 year dream come true! @the_bohemian_mama @LifeOnTheBrink @Bohovibe
Mitch Hansen
Nov 04, 2021 Report
I'm writing a review, not as a customer, but as a solar contractor from another state. This company's integrity shines through the information they provide on their website. There is ALOT of misinformation related to solar throughout the United States and it is rare to see a company take a firm stance on honesty, even if it makes it harder to compete. Keep outlasting those "solar entrepreneurs"!
Jodi Harris
Jul 19, 2021 Report
Third Sun Solar was great to work with! We tried their leading competitor first and this company was much better. They got everything done in a very timely way, and we love seeing our solar panels generating all the electricity we use. We couldn't be happier with Third Sun Solar.