The Most Experienced Energy Independence
Experts in Northeast Tennessee
Solar • Wind • EV Charging • Back Up Power Solutions • Hydro


About Us
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Founded in 2008 by Ian Huddleston, GTRE is a 100% family-owned and operated company that you can trust as your partner for reliable energy solutions. We are proud to be a reliable source for those seeking energy independence and significant electrical cost savings. Whether you are interested in off-grid systems, backup power solutions, EV chargers, or all the above, we have the experience, expertise, and integrity to exceed your expectations. Our 5-star reviews, from actual customers, reflect the trust and confidence our clients placed in GTRE. You can trust us, too.
IAN HUDDLESTON
Owner & CEO


The North American Board of Certified Energy Practitioners (NABCEP) is a nationally-recognized, certification program for photovoltaic (PV) solar system installers. Certified installers must have a certain amount of work solar experience, pass a rigorous exam, sign a code of ethics, and take continuing education courses for re-certification every three years.
Ian Huddleston
Certification # PV-041115-010730

A trade license provides proof of your experience and skill. Only licensed electricians can: operate a business and advertise services, obtain commercial insurance, pull building permits, pass inspections, and bid on public and government projects.
TN LLE Electrician's License
# 00060873

As a locally owned and operated company, we take pride in providing residential and commercial clients with high-quality installations, maintenance, and support services in Johnson City TN, and a 50-mile radius around it. We remain committed to providing people and businesses with energy security while saving on the ever-rising cost of electricity.
Headquartered in
Johnson City, TN