Green Mountain Solar Review
Solar, battery and heat pump installerBased in South Burlington, VermontProfile updated October 13, 2026
Is Green Mountain Solar a good choice?
Green Mountain Solar fits Vermont homeowners who want solar, batteries and heat pumps from one local installer. It says it was founded in 2017 and serves the whole state from South Burlington and East Dorset. It advertises a 12-year workmanship guarantee and names its panel, inverter and battery models. Its site lists one lender, EastRise Credit Union, so compare loan terms and ask what the 12-year guarantee covers, including roof leaks.
- Price
- Quote required; no solar system price on the company pages we reviewed. Costs
- Coverage
- VT: the whole state, from offices in South Burlington and East Dorset. Service area
- Warranty
- 12-year workmanship guarantee; panel maker warranties of 25 years product and 30 years output. Warranty
Your request goes to companies that serve your ZIP. It may not include Green Mountain Solar. To reach Green Mountain Solar directly, use the contact details on this page.
On this page
Why choose Green Mountain Solar, and why you might not
What Green Mountain Solar does well, and where to be careful, compared with the installers it competes with most.
Reasons to choose Green Mountain Solar
It names its exact panelsGreen Mountain Solar names JA Solar and Hyundai panels, Enphase IQ8 inverters, and Enphase, FranklinWH and Tesla batteries. None of the three alternatives below names a panel brand. You can look up the equipment before a sales visit.
It has the highest Google score hereIts head-office Google listing shows 5 from 337 reviews. That is the highest score and the most reviews in the table below. Owners praise on-time, friendly crews and quick installs.
It works across all of VermontGreen Mountain Solar says it serves the whole state from South Burlington and an office in East Dorset. It can also put in heat pumps along with solar and batteries.
It can add a battery through your power companyIf Green Mountain Power is your power company, it can put in a Tesla Powerwall through the power company’s battery program. You pay upfront or rent it. This covers the battery only, not the panels.
Reasons to look at others
Its work warranty is shorter than Catamount’sGreen Mountain Solar covers its own work for 12 years. Catamount lists 15. It does not say what the 12 years cover, or whether they cover leaks where the panels are bolted to the roof. Ask for the terms in writing.
It lists no inverter or battery warrantyThe panel makers’ warranties are listed, but Green Mountain Solar gives no term for the inverter or the battery. Ask for both in writing.
It names only one lenderIts site lists one loan, through EastRise Credit Union. It lists no way to rent the panels. Ask for the loan rate, length and fees, and compare them with other lenders.
It shows no electrical license numberWe found its Vermont contractor registration active. Its site shows no electrical license number. Ask which licensed electrician will do your job.
Green Mountain Solar reviews: what customers say
Each review site shows its own score; we read them on October 12 and 13, 2026 and do not combine them or add our own rating.
- Google5 / 5337 reviews · South Burlington, VT office listing only, not company-wideRead reviews
The five positive reviews below praise timely, friendly crews, fair prices, quick installs and help with the monitoring app, and one owner is happy with a combined solar and heat pump design. The one negative review does not describe a problem with the company; it asks how long panels last and what happens to them at end of life. These are issues to ask about, not a measure of how often they happen. Ask Green Mountain Solar how long the panels should last and how old panels are recycled.
5 recent 5-star reviews
“Some folks went out of there way to be helpful.”
Phil H. · Read on Google
“Everyone was great and I couldn't recommend them more.”
Penny · Read on Google
“Justin was great and install was quick and painless.”
Kirk D. · Read on Google
“The team’s installation was professional.”
John W. · Read on Google
“We had Green Mountain Solar install 15 solar panels on our garage roof and we were very happy with their work and the process.”
john p. · Read on Google
1 recent 1- and 2-star review
“How many years before replacing and what is done with the bad panels?”
Michael M. · Read on Google
How we picked these: the five newest 5-star and the five newest 1- or 2-star reviews with written text on Google and Trustpilot, as of October 2026 (200 reviews read, back to Jun 7, 2023). We found no Trustpilot page for Green Mountain Solar on October 12, 2026. Each quote is one sentence, word for word. Picking the highest and lowest ratings shows the range of experiences; it is not a representative sample, and we did not verify what reviewers describe.
How much does Green Mountain Solar cost?
Green Mountain Solar does not publish a solar system price; its process page says its proposal lists the equipment and services after a site evaluation. Ask for an itemized quote showing the cash price, system size, equipment models and, for a loan, the APR, fees and financed total. Its battery page shows a Green Mountain Power battery program with fixed fees; that is a utility program, not a solar price. For state price ranges, see our solar panel cost guide; for how the plans compare, see loans, leases and PPAs.
Purchase
You own itYou pay for the system up front.
Solar loan through EastRise Credit Union
You own itThe company says EastRise offers zero-down financing; borrowers join NESEA at no cost to qualify for membership. Ask for the rate, term and fees.
Green Mountain Power battery program
The utility owns the batteriesFor Green Mountain Power customers, the company installs Tesla Powerwall batteries under the utility’s Energy Storage Solutions program, with an upfront or lease option. This covers batteries only, not solar panels.
Loan as listed on Green Mountain Solar’s financing page; utility battery program on its battery page. Read October 13, 2026. No solar lease or PPA is listed.
Its products page names JA Solar JAM54D41 MB and Hyundai 440W panels, Enphase IQ8 microinverters, Enphase 10C, FranklinWH and Tesla Powerwall 3 batteries, and the Enphase EV charger. It says it is a certified Tesla Powerwall installer. Your written proposal should list the exact panel, inverter and battery models, the system size in kilowatts (kW) and the forecast yearly production in kilowatt-hours (kWh).
What does Green Mountain Solar’s warranty cover?
Coverage | What Green Mountain Solar publishes | What to confirm |
|---|---|---|
Solar panels | Maker’s warranty: the company lists 25-year product terms on the panels it names | Which panel model you get and that the maker’s term applies to it. |
Panel output | Maker’s warranty: 30-year linear power warranty listed for the Hyundai panel | Confirm in your proposal: the output guarantee for your panel model. |
Inverter | Not published | Confirm in your proposal: the inverter model, its maker’s term and who pays labor to replace it. |
Battery | Not published | Confirm in your proposal: the battery maker’s term and who services it. |
Labor and workmanship | 12-year workmanship guarantee | Advertised on its homepage. Confirm in your proposal: what the guarantee covers and whether it transfers to a new owner. |
Roof penetrations | Not published | Confirm in your proposal: who repairs and pays if a leak starts at a panel mount. |
Company-published terms from Green Mountain Solar’s homepage and products page, read October 13, 2026. It has no warranty page. Your signed agreement decides what applies.
Its FAQ explains how a new owner transfers maker warranties within 30 days of buying a solar home.
Where does Green Mountain Solar operate, and which licenses were checked?
Green Mountain Solar’s who we are page says it serves the full state of Vermont from its South Burlington headquarters and a Southern Vermont office in East Dorset (read October 13, 2026). Its site also has town pages for places such as Burlington, Montpelier, Middlebury, Manchester Center and Norwich. Sister companies Granite State Solar (Bow, NH) and Vermont Generator Systems are separate brands. A listed town does not mean every address qualifies or that EcoGen can connect you with Green Mountain Solar there.
Showing South Burlington, VT (headquarters)
Office addresses (2)
- South Burlington, VT (headquarters)76 Ethan Allen Dr., South Burlington, VT 05403Show on mapOpen in Google Maps
- East Dorset, VT (Southern Vermont office)22 Blue Spruce Ln., East Dorset, VT 05253Show on mapOpen in Google Maps
Address from Green Mountain Solar’s website, read October 13, 2026.
Licenses
We found 1 active license record in state registries (October 13, 2026). Check the license yourself under the exact business name on your contract. A license check confirms registration, not workmanship quality.
Vermont1 recordActive, checked Oct 13, 2026
- License
- Electrical contractor
- Number
- Not published
- Registry check
- Not checked by us
- Note
- No Vermont license number appears on the pages we read (October 13, 2026).
- License
- Residential Contractor – Business
- Number
- 174.0000050
- Registry check
- Active, Vermont Secretary of State, Office of Professional Regulation (Residential Contractor registration), checked October 13, 2026
- Note
- Registry lists Green Mountain Solar; expires 2027-03-31. Vermont licenses electricians as individuals; this is the company’s residential contractor registration.
Green Mountain Solar’s battery page says it is a certified Tesla Powerwall installer and an installation partner for Green Mountain Power. These are company statements; we did not verify them.
Green Mountain Solar compared with three other installers
These three are the only alternatives that work in Vermont, Green Mountain Solar’s only state. Catamount and SunCommon are also local Vermont installers. Every fact comes from the company profiles linked below.
| Green Mountain SolarThis page | Catamount Solar | SunCommon | Rectify Solar | |
|---|---|---|---|---|
| Best for | Solar, batteries and heat pumps in Vermont | Vermont homes, including off-grid and battery systems | Vermont or New York solar with Tesla batteries | Central Indiana homes wanting solar and energy upgrades |
| Head office | South Burlington, VT | Randolph, VT | Waterbury, VT | Indianapolis, IN (mailing address) |
| States shared with Green Mountain Solar | Its only state | 1: VT | 1: VT | 1: VT |
| Roofing | Not listed | Not listed | Not listed | Mentioned, not confirmed |
| Ways to pay | Buy, credit union loan, utility battery program | Buy, credit union loan, prepaid lease | Buy, loan, rent, utility battery programs | Zero-down financing |
| Labor warranty | 12 years | 15 years | Not listed | 10 years |
| Roof leak warranty | Not listed | Not listed separately | Not listed | Not listed separately |
| Brands named | JA Solar, Hyundai, Enphase, FranklinWH, Tesla | Enphase, Tesla, SolarEdge, Solis, FranklinWH | Tesla, Enphase, SolarEdge | None |
| Google score* | 5 (337 reviews) | 4.9 (59 reviews) | No Google listing found | No Google listing found |
*Each Google score is for the company’s head-office listing only, read October 12 and 13, 2026.
Full profiles: Catamount Solar · SunCommon · Rectify Solar
Before choosing Green Mountain Solar
Ask for these in writing:
- An itemized quote with the cash price and the financed total, including the APR and all fees.
- The exact panel, inverter and battery models, the system size in kW and the forecast yearly production in kWh.
- The warranty documents for your payment plan: panels, inverter, labor and roof penetrations.
- Your local service contact, and who handles utility approval and warranty claims.
- The exact company on the contract, such as Green Mountain Solar, and its license for your state.
Before you sign, read the quote line by line and bring our questions to ask a solar installer.
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How we researched this profile
We read Green Mountain Solar’s own pages on October 13, 2026: homepage, who we are, contact, residential solar, financing, FAQ, products, residential batteries and our process. We did not check a license in a state registry. We did not buy a system, request a quote, visit an office or interview customers. Green Mountain Solar did not review this page.
Our installer methodology explains what we check.
Sources (9)
- Green Mountain Solar: Homepage (addresses, workmanship guarantee), read October 13, 2026
- Green Mountain Solar: Who we are, read October 13, 2026
- Green Mountain Solar: Contact, read October 13, 2026
- Green Mountain Solar: Residential solar, read October 13, 2026
- Green Mountain Solar: Financing, read October 13, 2026
- Green Mountain Solar: FAQ, read October 13, 2026
- Green Mountain Solar: Products, read October 13, 2026
- Green Mountain Solar: Residential battery backup, read October 13, 2026
- Green Mountain Solar: Our process, read October 13, 2026