Greene Tech Renewable Energy

Verified profile
Updated: 04 January 2023

Installing solar since 2008

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4.77 from 70 Reviews

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SolarReviews Expert Rating Score:

A score we give a solar company out of 100 based on 13 criteria that our SolarReviews industry experts believe are the best criteria to separate good and bad solar companies.


Rating breakdown

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Greene Tech Renewable Energy reviews

3 stars


2 stars


1 star



Avg. rating

Breakdown of consumer reviews

Sales Process


Price as quoted


On schedule


Installation quality


After sales support


Latest good review thumbs up

Jan | Whitesburg, Tennessee | 01/11/2023

Great Job, Very knowledgeable

Ian designed a great system for our home, made sure we made changes for our electrical panel and generator prior to installation. Kept me posted on the wait time for equipment. When the equipment arrived, he scheduled the installation and was here every day it didn't rain. System works great and passed inspection with no issues. Ian is also professional and answers all of your questions well. Thanks Ian!

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The Hartleys | Johnson City, Tennessee | 01/04/2023

Highly recommended

Ian and his team were great to work with. Very professional and easy to deal with. Kept us informed regularly and readily answered any questions. While there were delays, with so many supply issues I'm very happy with the final timeline. That is why I gave 5 stars despite the delays for my "On schedule" rating. With regard to cost, no other vendor was really close. Not only that, no other vendor gave me such confidence that the job would be done correctly. The work was done to a high standard. Not only was cost kept in mind, but he long term viability of the system was considered. Lastly, everyone I dealt with during the installation process had a very high opinion of Ian and his team. That says volumes in my experience.

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1 comment >
Reply from Greene Tech Renewable Energy: Thank you very much!

Analytical Shopper | Butler, Tennessee | 08/09/2022

Knowledge, Experience, Attention to Detail

Ian, is very knowledgeable in his field. He can figure it out and knows how to solve things. I would use him again and can recommend him highly!

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Dave & Anita | Jonesborough, Tennessee | 07/01/2022

Energy Independence Thanks To GTRE

Last year GTRE installed our complete solar system with 24 solar panels producing 9.8 kW and 2 LG Li-Ion batteries with 32 kWh storage capacity. Our latest electric bill was $35 at a time when energy costs are probably skyrocketing. The entire installation inside & out is very clean, Ian and his crew were wonderful to work with, and Ian went above & beyond obtaining products despite global manufacturing & supply issues. GTRE has given us a large measure of energy independence in these uncertain times, we're very glad we found them, and we recommend them to anyone.

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lnuttle | Jonesborough, Tennessee | 06/15/2022

Thrilled with my new solar installation!

I am absolutely thrilled with my recent solar installation - a 10.08 kW system with 9.3 kWh battery! Ian was great to work with from day one; his quote was clear and informative, with all of the data I needed to move forward with the project with confidence. The installation was clean and efficient and the quality of the equipment and install drew compliments from the inspectors. Ian has also been very responsive to my post-installation questions and new-owner troubleshooting. I would recommend GTRE without hesitation!

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Douglas Lake | Dandridge, Tennessee | 03/19/2022

Exceed expectations

Ian was super responsive and patient with me as I sent him questions about the 10k Solar Edge and LG Chem battery system he recommended. So it wasn't a surprise when he and his crew did a super professional job on the install and testing. What I didn't expect, though, was that I'd actually enjoy having Ian and his crew around! Great sense of humor and, based on the way he ran his crew and the way they responded to him, a very effective leader. Also, when supply chain issues arose he went out of his way to search for and locate a battery for my system when the originally-ordered battery was hung-up in transit. There's a lot of other specifics I could provide, but this says it all: I once caught him on the roof re-adjusting a whole row of panels to insure that they were in perfect visual alignment with the last panel he'd installed in that row. It has only been off by a small fraction of an inch.

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Edward | Unicoi, Tennessee | 02/21/2022


Ian and his crew were professional, knowledgeable, courteous and seem to genuinely enjoy what they do. He kept us well informed with scheduling, delays (due to supply issues) and other pertinent solar information through his newsletters. Concerned that all those panels would look like it was too much, we were pleasantly surprised after they were installed and realized this was the right move for us. Looking forward to lower electric bills and backup when the power goes out. Highly recommended, both GTRE and solar!

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1 comment >
Reply from Greene Tech Renewable Energy: Thank you Edward!

Mia Z | Kingsport, Tennessee | 07/14/2021

Experienced, very knowledgeable and customer focused

When I started looking for a solar company to add solar to my house, my top requirements were experience and they also had to be knowledgeable enough to answer all of my detailed questions. There are several companies out there, but for this region, no one is better than Ian at GTRE! Ian took a lot of time to develop a proposal and answer all of my questions (and I had a lot!). I followed Ian during the installation and he was extremely knowledgeable with every aspect of the system. We are so happy with our system and can report $0 for our electric bill! During the summer we are building credits with our electric provider that we can use in months with less sun. So if you are looking for experience, knowledge and someone dedicated to their customers - I would encourage you to call Ian at GTRE!

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Rebecca White | Johnson City, Tennessee | 07/10/2021

5 Stars. Couldn't have asked for better.

Professional, honest, timely and knowledgeable. Really enjoyed the entire process.

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Yorrick of Greeneville TN | Greeneville, Tennessee | 01/15/2021

Superior experience, quality equipment and installation

Had received bids elsewhere which were unsuitable, one out of Knoxville sent up red flags, with immediate distrust/slimy...gave high bid, premium prices for install and equipment not up to my standards/requirements, and sales person was arrogant and high-pressure. Ian Huddleston with Greene Tech Renewable Energy was the exact opposite. First contact/meeting was impressed with knowledge, experience, presentation and bid/equipment to be obtained high quality, with excellent and professional bid for complete install. Performed solar audit on rooftop with proper software to evaluate and verify site suitability. Our install situation NOT typical...two 200 amp services were first updated to single 400 amp service meter/drop with two disconnects/service panels. Installation completed with high attention to detail, and thought given to final appearance and outcome. Ian's team's work is absolutely up to the high standards I hoped for and expected. There have been issues, but each one has been investigated, with contact made with SolarEdge support to ensure all is correct and to figure out how to rectify situation, and Ian has been responsive and out on site to make sure system performs as expected, despite the issues encountered. Even typical installs may have issues, ours being unique had unique problems that needed attention, and we have been extremely pleased with GTRE's desire to be sure we are happy with system, and they are happy with system, and that it is performing as it should be.

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Gail Farzanegan | Dandridge, Tennessee | 12/24/2020

The Best Solar Energy Company in TN

We spent several weeks investigating and interviewing several solar energy companies across TN from Nashville to Johnson City. After receiving quotes and a comparison of installation cost, we decided on Green Tech. It was one of the best decisions we could have made. The only negative is that we had to wait a couple of months for the install because of Ian’s injury. Frankly, we were so impressed with the quality of his work that we have scheduled him to install solar air conditioning for our home this spring. I just hope he can move us up on his busy schedule. schedule.

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Service types

Residential solar - Grid tied

Commercial solar - Grid tied

Solar hot water sales and installations

Wind turbines

Residential solar - Hybrid solar systems

Energy monitoring

Residential solar - Off-grid systems

Pika / Generac Energy Storage

LG Chem solar batteries

SolarEdge - StorEdge

Enphase Storage

About Greene Tech Renewable Energy

Since 2008, Greene Tech Renewable Energy LLC has supplied and installed top-tier, renewable energy systems throughout Northeast Tennessee at affordable prices. We are a locally owned and operated company headquartered in Johnson City, Tennessee with 5 Star Reviews from actual customers on and Google. Licensed Electrician, OSHA and NABCEP Certified PV Installation Professional. Fully insured.

Office locations


Tennessee - Johnson City

937 Hamilton Place (Warehouse Location NO MAIL), Johnson City TN, 37604

Tennessee - Johnson City

530 East Main Street Unit 2226, Johnson City TN, 37601

NABCEP certifications

NABCEP Certified Solar PV Installer
Ian Huddleston



Contact Greene Tech Renewable Energy

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Head Office
530 East Main Street Unit 2226, Johnson City TN, 37601