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Green Energy Gains is a Danvers home-performance contractor built around one thing: a free Mass Save energy assessment that turns into a specific, itemized plan for air sealing, insulation and weatherization. Nearly every review names the same person walking the house — Garrett Hodgson — with owner Greg Kendall (the company's site names him as Greg K.) turning up on a handful of the assessments too. What people describe again and again is Garrett going into places most homeowners wouldn't — one reviewer called their own crawl space 'long, narrow, and creepy' and said Garrett examined it enthusiastically anyway — and coming back with a written plan rather than a sales pitch. In a 2023 review, a homeowner acting as their own general contractor described Garrett walking them through the paperwork needed to get Mass Save to cover 75% of their insulation costs, with no other local help available on their timeline. When the installation itself happens, reviewers sometimes name a different crew: one 2023 review credited installer Gregor with thorough work that produced an 'immediate difference in heat efficiency throughout the house.' The Better Business Bureau gives the company an A grade, though its file there was opened only in March 2024 and lists a single employee. A 2024 Reddit post in an investing forum reported that ConnectM Inc. acquired Green Energy Gains that October — a detail the company's own site doesn't mention, describing itself instead as locally owned with Greg K. as owner. Worth confirming directly who you'd actually be working with today. The clear fit is the assessment phase — a thorough, unpushy energy audit and a Mass Save-eligible plan — whoever ends up handling the installation itself.
“ConnectM Announces Strategic Acquisition of Green Energy Gains Inc.”
“ConnectM Announces Strategic Acquisition of Green Energy Gains Inc.”
“I called [Green Energy Gains](https://maps.app.goo.gl/cTppw7XvhCnAzPm98?g_st=com.google.maps.preview.copy) and Garrett from their team came out and was excellent. Informative, but not salesy. One of the first times I was ever motivated to write a review for a business.”
Garrett did a home energy assessment for us and was extremely helpful! He took the time to evaluate our home thoroughly and explained different options we had to make improvements in both the short and long term. He shared a summary afterwards with all of the info we needed. Super helpful and would definitely recommend!
Garrett recently did our Mass Save energy audit and was extremely thorough and helpful. He enthusiastically examined a very long, narrow, and creepy crawl space that I would probably never have had the guts to even peek inside. I learned a lot from his assessment, and now we are ready to transition our home to clean energy!
They did a great job. Very professional and worked efficiently. They work was done very well and has made a big difference with my utility bills.
Amazing service, ideas and responsiveness from Garrett Hodgson... We were without AC for a week plus in a heatwave, been trying to make a decision as to which way to go. We understood there were rebates out there though MA Save, yet most independent HVAC companies did not want to touch them as they were a lot of work to process and get reimbursement. We met with one HVAC company that took valuable time to explain the differences of the heat pump system and although it was a whole lot more than we anticipated spending, this system also provided us a back-up heat source and our sales rep. took on the responsibility of explaining AND processing the necessary paperwork to get the rebate. Part of the process was filling out an online form to set up a site visit for approval to receive the $2500 rebate and be eligible for the $2000 tax credit. We did the application 2X, thinking it would be a week out based on the website and got an error messages. Our sales rep. gave us Garrett Hodgson's from Green Energy Gains email address to contact and within 5 minutes Garrett replied! We were able to work out an appointment for the following day (instead of a week), which provided us time to make our decision, and book the installation for the following week! We felt so fortunate! Garrett arrived promptly at his appointment time, thoroughly explained his process and immediately confirmed we were eligible fot the rebate and also shared what he would do to try to save us additional $ based on the energy efficiency of our home. He went through our home and was very helpful, certainly was not a salesperson...simply someone who knew what he was doing and believed in what he did. He was with us for about an hour, provided an excellent education and honest analysis of our home and where we may (or may not want to) make energy improvements that were cost effective and cautioned us on the ones that were not. while he was with us, he spent a few extra minutes to send us the needed forms for financing to expedite the process should we want to go that route and later that evening we received his full assessment, recommendations, pricing and follow-up instructions should we want to do any additional work that Garrett explained. Thank you for employing such a fine young professional as Garrett, we were really impressed with Garrett, the process and we hope we are equally as pleased with our new system!
Garrett from Green Energy Gains came by to do an energy assessment on our home, and was very helpful. He did a thorough review of our condo and gave us a number of suggestions but was not at all pushy or salesy, which I appreciated. I strongly recommend you give them a call if you’re considering making your home more energy efficient.
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1 change recorded — last scanned Aug 4, 2026.
Floor refinishing4.5
Dense-pack cellulose walls, R-60 attics2.6
BPI-certified building performance specialist3.2