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best solar system installation company for home in tennessee

Why Choose GTRE

With a proven track record of successful projects and satisfied customers, we've earned a reputation for delivering results that exceed expectations. We understand that each home and customer is unique, which is why we tailor our solar installations to meet specific needs, ensuring maximum efficiency and cost-effectiveness.

The small business with a big heart


Family Owned & Operated

We are a Northeast Tennessee company that lives and works here. Most solar companies in the area hire installers from other states to come and work here temporarily.

Over 15 Years

of Business in Tennessee

No consumer lawsuits.
No bankruptcies.
No company name changes.

One company, one name,
one you can depend on.

NABCEP Certified PV Installation Professional

The North American Board of Certified Energy Practitioners® is the most respected, widely recognized certification organization for professionals in the field of renewable energy.

Certified to Install & Repair All Major Solar Systems

Including SolarEdge, LG Chem, Enphase Energy, Generac PWRCell, Outback Power, Schneider Electric, Franklin WH, APSystems, etc.

Small but Mighty Team

Other companies may have a sales staff, a call center, and a warranty department. We can keep our customer service level high and our prices low with our small, but experienced and professional, team.

Support a Local


Spending money with a locally owned small business isn't just better for you - it's better for our local economy. 

Don't just take our word for it.

See what GTRE customers say!

Get in Touch


Monday - Friday    9am to 5pm


P.O. Box 2226

Johnson City, TN 37605


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General Inquiries

If you would like general information about us, please fill out the form below.
Click here for a quote.     Click here for a service call.

Thank you!!

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