# Cotuit Solar LLC **Trade:** Solar Installation · **Address:** 29 Trinity Pl, Mashpee, MA 02649 · **Phone:** (508) 428-8442 · **Website:** http://www.cotuitsolar.com/ · **Languages:** English **Rating: 5.0/5** (high confidence) — from 172 reviews across 6 sources. A 0–5 star rating built from what customers and the public say (every review and mention weighted by where it was posted, how old, how detailed and how credible it is, shrunk toward a 3.5★ baseline when evidence is thin) plus what the record shows (Reddit recommendations or warnings, a registry-verified licence, how recently they were reviewed, customer work photos, BBB grade, negative news, a revoked licence). Positive record counts only as far as the reviews have earned it; penalties count in full. Confidence describes how much weighted evidence stands behind the number, never the number itself: low when fewer than about five normal reviews' worth of weight (or mentions only) support it, medium up to about twenty, high beyond that across at least two sources. An operator flag for a suspicious review pattern caps a rating at 3.5★ and marks it low. 100% of sentiment-scored reviews read net-positive. Last 6 months: 11 reviews, 0 negative. ## The honest read Cotuit Solar is a Cape-based solar installer working out of 29 Trinity Place in Mashpee, with a mailing address in Cotuit and a branch on Nantucket. The company says it has been putting solar on Cape Cod, Martha's Vineyard and Nantucket since 1988 and has installed over 950 systems, which would make it one of the oldest solar contractors in the region. The review record is long and unusually uniform: 172 reviews on file since 2022, a 5.0 Google average across 190 ratings, and an A+ grade at the BBB. What reviewers describe again and again is the paperwork, not just the panels - permits, the historic-district and HOA approvals, the Eversource interconnection, and the SMART incentive filings all handled by the company rather than the homeowner. The work covers rooftop and ground-mount PV, pole-barn arrays, battery storage, EV chargers and solar thermal. Reviewers in 2026 describe a 50-panel, 20,000-watt residential install, a condominium array that needed the association signed off, and a project on Martha's Vineyard; a 2025 reviewer had panels temporarily removed so a skylight leak - which turned out not to be the panels - could be traced and repaired. Service after the sale comes up repeatedly. A January 2026 reviewer whose original installer, SunRa Solar, closed down says Cotuit took the system on and replaced a failed micro-inverter; a 2023 reviewer describes an inverter replaced years after the original install. Several people mention working with the company for a decade or more, and one says almost twenty years. Worth asking about before you book: the timeline and who holds which licence. Reviewers describe permitting stretching over months (one was quoted about three months, another says the whole process took eight), which is normal for Cape solar but worth pinning down; and one reviewer notes the company was somewhat more expensive than a competing quote, choosing it for its service record. The state registry confirms home improvement contractor registration 146276 in the company's own name; the master electrician licence 22826 the company cites is registered to Jeffrey Greenwood, the electrician on its staff, not to the company itself. **Strengths:** - Paperwork handled — permits, inspections and Eversource interconnection managed for you - Incentive filings — reviewers credit help with SMART and tax credits - Long customer relationships — repeat installs and support spanning many years - Post-install service — orphaned system adopted, failed inverter replaced - Registry-verified registration — HIC 146276 active in the company name - Complex approvals — condominium and historic-district projects seen through **Concerns:** - Permitting timelines — reviewers describe months between signing and install - Price positioning — one reviewer chose them despite a cheaper competing quote **Where sources disagree:** - The company cites master electrician licence 22826, which the state registry lists under an individual, Jeffrey Greenwood, rather than under Cotuit Solar, LLC; the registration that is verified in the company's own name is home improvement contractor 146276. - Web searches for this business surface the unrelated PureSky Energy 'Cotuit' community solar farm in Sandwich and a BuildZoom page for Nantucket Solar Solutions; neither is this company and neither was used here. ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - The Massachusetts registry lists home improvement contractor registration 146276 as active with COTUIT SOLAR, LLC as the holder of record. _(confidence: high)_ - [State License Registry](https://contractorhub.mass.gov/s/hic-contractor-search) — “MA hic license 146276 registry-verified active — registry holder of record: COTUIT SOLAR, LLC” - The master electrician licence 22826 the company cites is registry-verified active in the name of Jeffrey Greenwood, an individual on its staff, rather than in the company's name. _(confidence: high)_ - [State License Registry](https://elicensing21.mass.gov/CitizenAccess/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=Home) — “MA electrician license 22826 registry-verified active — registry holder of record: JEFFREY . GREENWOOD” - Google publishes a 5.0-star average from 190 ratings and the Better Business Bureau grades the business A+. _(confidence: high)_ - [Google](https://www.google.com/maps/search/?api=1&query=Cotuit%20Solar%20LLC&query_place_id=ChIJe94G1SPT5IkR24XgS_X3GM4) — “Google: 5★ from 190 ratings” - [Better Business Bureau](https://www.bbb.org/us/ma/mashpee/profile/solar-installation/cotuit-solar-llc-0021-117786) — “Better Business Bureau grade: A+” - Reviewers repeatedly say the company handles the permitting, inspections, utility interconnection and incentive paperwork rather than leaving it to the homeowner. _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xGbVVEZHlXbTFGZFhGS2FEUTViR1pmTFZkU05VRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOlFmUDdyWm1FdXFKaDQ5bGZfLVdSNUE%7C%7C?hl=en) — “5★ I have found Cotuit Solar to be highly professional, delivering what they promised when they promised, and providing excellent customer s…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25oMVJVcFRTM2c0TWw4NE9ITTNUV3gyVEVNd1FsRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOnh1RUpTS3g4Ml84OHM3TWx2TEMwQlE%7C%7C?hl=en) — “5★ Cotuit Solar came highly recommended to us by a neighbor here on Cape Cod so we signed up to have solar panels put on our house. Matt cam…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURQemVLSDRRRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CIHM0ogKEICAgIDPzeKH4QE%7C%7C?hl=en) — “5★ Cotuit was the third solar company I investigated. It was recommended by my tree trimmer based on their excellent customer service. Fro…” - Long-running customer relationships: reviewers describe second installs on later homes and one says they have worked with the company for almost 20 years. _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xaRVpIZFZNbW8yVGt4Wk5YaFBWbHA1TTAxVmRVRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOlZEZHdVMmo2TkxZNXhPVlp5M01VdUE%7C%7C?hl=en) — “5★ Outstanding customer service. Work crews are professional and courteous. The work is done neatly and efficiently. We've been working with…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21wdU9GRkRVMlZJWlZwV1FuQXhVMGxLZVY5c1RIYxAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOmpuOFFDU2VIZVpWQnAxU0lKeV9sTHc%7C%7C?hl=en) — “5★ Cotuit Solar installed a solar system on my first house in 2018 and my second home in 2025. Both installations went smoothly and the firs…” - Support after the install, including taking over an orphaned system when the original installer closed and replacing a failed micro-inverter. _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25kNFFrTjNaMlpXVlVGS01XSkZaVVYzZVdKcE0wRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOnd4QkN3Z2ZWVUFKMWJFZUV3eWJpM0E%7C%7C?hl=en) — “4★ We were originally customers of SunRa Solar but they closed down in the summer of 2024. We found Cotuit Solar through the Ephase portal a…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURwdXRIcDdBRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CIHM0ogKEICAgIDputHp7AE%7C%7C?hl=en) — “5★ Cotuit Solar installed our array in 2017 and it has been one of the best decisions we have ever made! Our home is a 1970’s ranch, with e…” - Residential rooftop and ground-mount photovoltaic systems, including a 50-panel, 20,000-watt install described in 2025. _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ma/mashpee/profile/solar-installation/cotuit-solar-llc-0021-117786) — “Services offered (Better Business Bureau): Photovoltaic Panels, Flat Plate Solar Thermal Collectors, Solar Thermal Storage Tanks, Turnkey so…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnTURJMTV1NmVREAE!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CIHM0ogKEICAgMDI15u6eQ%7C%7C?hl=en) — “5★ Cotuit Solar recently completed a 50-panel, 20,000-watt solar installation on my home, and I couldn't be more pleased with the entire exp…” - Solar thermal collectors and storage tanks alongside photovoltaic work. _(confidence: medium)_ - [Better Business Bureau](https://www.bbb.org/us/ma/mashpee/profile/solar-installation/cotuit-solar-llc-0021-117786) — “Services offered (Better Business Bureau): Photovoltaic Panels, Flat Plate Solar Thermal Collectors, Solar Thermal Storage Tanks, Turnkey so…” - Complex-approval projects - a condominium array needing homeowner-association sign-off, and work requiring historic district review. _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21obVZXTkJWV1oyTFZSeVJVWjNhVE5EWW5Gc1NVRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOmhmVWNBVWZ2LVRyRUZ3aTNDYnFsSUE%7C%7C?hl=en) — “5★ Cotuit solar was a great company to work with . I started out wanting an unusual design -Cotuit was the only company willing to work with…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xONE5rNUZaRkZWV25KZk5rNU5jRFpUYVV4MFVrRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOlN4Nk5FZFFVWnJfNk5NcDZTaUx0UkE%7C%7C?hl=en) — “5★ Cotuit Solar did a fantastic job on our PV project. The installation looks great and. has been operating flawlessly. They were very eas…” - Reviewers describe permitting and approval timelines running for months before installation starts. _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25oMVJVcFRTM2c0TWw4NE9ITTNUV3gyVEVNd1FsRRAB!2m1!1s0x0:0xce18f7f54be085db!3m1!1s2@1:CAIQACodChtycF9oOnh1RUpTS3g4Ml84OHM3TWx2TEMwQlE%7C%7C?hl=en) — “5★ Cotuit Solar came highly recommended to us by a neighbor here on Cape Cod so we signed up to have solar panels put on our house. Matt cam…” - Neighbours on Nextdoor in East Falmouth and Harwich recommend the company, one saying they had it install in 2016 and expand the array in 2019. _(confidence: medium)_ - [Nextdoor](https://nextdoor.com/p/T3_GcKNkGn6Q) — “Nextdoor (East Falmouth, MA) — I had Cotuit Solar install mine….no problems….quick and efficient.” - [Nextdoor](https://nextdoor.com/p/T3_GcKNkGn6Q) — “Nextdoor (East Falmouth, MA) — We had Cotuit Solar install ours and they were great. They're local and have been in business a long time, a…” - [Nextdoor](https://nextdoor.com/p/DsSM2c6-Xkjm) — “Nextdoor (Harwich, MA) — I believe the most trustworthy local company is Cotuit Solar, located on Rt 28 in Cotuit.....good Cape folks who ha…” - A Barnstable County news item describes it as a local solar installer that financially supported a research project at the county wastewater test centre. _(confidence: medium)_ - [capecod.gov](https://www.capecod.gov/2025/11/10/masstc-awarded-snep-restoration-capital-mini-grant-to-advance-urine-fertilizer-research/) — “capecod.gov — With the financial support of Cotuit Solar LLC, a local solar installer” - Specializes in Solar Installation _(confidence: high)_ - [Google](https://www.google.com/maps/search/?api=1&query=Cotuit%20Solar%20LLC&query_place_id=ChIJe94G1SPT5IkR24XgS_X3GM4) — “Google: 5★ from 190 ratings” - [Better Business Bureau](https://www.bbb.org/us/ma/mashpee/profile/solar-installation/cotuit-solar-llc-0021-117786) — “Services offered (Better Business Bureau): Photovoltaic Panels, Flat Plate Solar Thermal Collectors, Solar Thermal Storage Tanks, Turnkey so…” - [State License Registry](https://contractorhub.mass.gov/s/hic-contractor-search) — “MA hic license 146276 registry-verified active — registry holder of record: COTUIT SOLAR, LLC” - Also offers Electrical _(confidence: medium)_ - [State License Registry](https://elicensing21.mass.gov/CitizenAccess/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=Home) — “MA electrician license 22826 registry-verified active — registry holder of record: JEFFREY . GREENWOOD” ## License Status: **not_found** — verified against the official MA state registry, never self-reported. Re-check at the official registry: https://madpl.mylicense.com/Verification/ ## Sources - [Google](https://www.google.com/maps/search/?api=1&query=Cotuit%20Solar%20LLC&query_place_id=ChIJe94G1SPT5IkR24XgS_X3GM4): 5.0★ from 190 ratings - [Google Reviews](https://www.google.com/maps/search/?api=1&query=Cotuit%20Solar%20LLC&query_place_id=ChIJe94G1SPT5IkR24XgS_X3GM4): Listed on this source - [Better Business Bureau](https://www.bbb.org/us/ma/mashpee/profile/solar-installation/cotuit-solar-llc-0021-117786): Listed on this source - [Yelp](https://www.yelp.com/biz/cotuit-solar-mashpee-3): Listed on this source - [Official Website](http://www.cotuitsolar.com): Self-reported profile and service details - [Angi](https://www.angi.com/companylist/us/ma/cotuit/cotuit-solar-reviews-1.htm): Listed on this source - [Angi](https://www.angi.com/companylist/us/ma/cotuit/cotuit-solar-reviews-1.htm): Listed on this source - [Exa](https://www.capecod.gov/2025/11/10/masstc-awarded-snep-restoration-capital-mini-grant-to-advance-urine-fertilizer-research/): 1 web mention across the open web (each linked to its source) - [Exa](https://cotuitsolar.com/): 0 web mentions across the open web (each linked to its source) ## Mentions Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding. - “With the financial support of Cotuit Solar LLC, a local solar installer” — capecod.gov (2025-11-10) — https://www.capecod.gov/2025/11/10/masstc-awarded-snep-restoration-capital-mini-grant-to-advance-urine-fertilizer-research/ - “We had Cotuit Solar install ours and they were great. They're local and have been in business a long time, and they really care about their work for you. Highly recommend.” — nextdoor.com (2025-05-30) — https://nextdoor.com/p/T3_GcKNkGn6Q - “I had Cotuit Solar install mine….no problems….quick and efficient.” — nextdoor.com (2025-05-30) — https://nextdoor.com/p/T3_GcKNkGn6Q - “I believe the most trustworthy local company is Cotuit Solar, located on Rt 28 in Cotuit.....good Cape folks who have been installing/supporting solar for many years. I had them install equipment in …” — nextdoor.com (2025-03-27) — https://nextdoor.com/p/DsSM2c6-Xkjm ## Recent reviews - **5/5 · Google Reviews · Peter Wyman · 2026-08-03**: If you’re looking for a Great Solution to your ever rising Electric Bill (60% of your cost is in Distribution from Canada, you have No control of), then turn to Family Owned & Trusted Cotuit Solar on Cape Cod. Their Staff is Friendly, Knowledgeable, Experienced and Efficient! They come to your home … - **5/5 · Google Reviews · George Rogers · 2026-08-02**: Cotuit Solar was absolutely wonderful to work with from the planning process to final installation. We couldn’t be happier with our system!! - **5/5 · Google Reviews · Kathy Logue · 2026-06-30**: I have found Cotuit Solar to be highly professional, delivering what they promised when they promised, and providing excellent customer service for any questions, issues, help with interfacing with Eversource, etc. Every member of the staff I have encountered has been both very professional and exce… - **5/5 · Google Reviews · Reilly Lewis · 2026-05-30**: Cotuit solar was amazing every step of the way. They actually finished ahead of schedule which was great. Highly recommend! - **5/5 · Google Reviews · Mark Ridge · 2026-05-27**: Cotuit Solar came highly recommended to us by a neighbor here on Cape Cod so we signed up to have solar panels put on our house. Matt came out and measured up the roof and designed a system. He told us it would take approximately 3 months for all the permits to be approved. Much to our surprise, all… - **5/5 · Google Reviews · James Nielsen · 2026-05-27**: Outstanding customer service. Work crews are professional and courteous. The work is done neatly and efficiently. We've been working with Cotuit Solar for almost 20 years; it's always a pleasure working with them. - **5/5 · Google Reviews · glenn · 2026-05-13**: Cotuit solar was a great company to work with . I started out wanting an unusual design -Cotuit was the only company willing to work with me . Later ,when the town turned that design down . Conrad-the owner and the electrican helped me pivot to a standard net metering enphase system. The install d… - **5/5 · Google Reviews · Travis Grodkiewicz · 2026-03-20**: I highly recommend Cotuit Solar. The team was fantastic throughout the entire process, from estimating my solar needs to site visits and a seamless install. It took no time to get it all up and running. I'm already seeing returns on the investment. I love that they're local and if I ever do have… - **5/5 · Google Reviews · Colin Mahony · 2026-03-20**: Great service and incredibly helpful throughout the entire process. We would highly recommend the Cotuit team to anyone. - **5/5 · Google Reviews · David Howland · 2026-03-17**: I have nothing but good things to say about my experience working with Cotuit Solar. They were quick to respond to my request for a quote, clearly explained the inputs to the design process and the resulting impact on solar generation, the system cost, and my utility bill, and clearly communicated e… --- Data freshness: last scanned 2026-08-20T05:51:19.452Z. Cite as: Cotuit Solar LLC — Tavlee (https://tavlee.com/contractor/cotuit-solar-llc-mashpee) Source: https://tavlee.com/contractor/cotuit-solar-llc-mashpee