Privately owned solar and battery installer for Connecticut, Massachusetts, and Rhode Island. Tier-1 panels, in-house W-2 crews (never subcontractors), and 9,000+ homes powered — average 47 days from contract to a live system.
Trusted across
New England
Homes powered across New England
Average from contract to install
Panels, inverters & batteries on every quote
Google rating · NABCEP · BBB A+
Six things, all in-house. Scroll to see how each one stacks together.
Custom rooftop systems designed around your home's energy use, roof layout, and long-term savings. Tier-1 panels, in-house design, never subcontracted.
FranklinWH, Tesla Powerwall, and Enphase IQ. Backup power for outages, and qualified for CT ESS and MA Connected Solutions battery rebates.
Add a battery to a solar system we did not install — any brand, any age. Most installers refuse this work; we built a team specifically around it.
Small to mid-size commercial roofs and ground mounts. Aurora-based design, full permitting, and utility interconnection — turn-key.
If your roof is over 12 years old, we replace it and install solar on the same timeline. One crew, one contract, one warranty.
Level-2 charging at home, wired to the same panel as your solar. Hardwired or plug-in, smart-meter ready, and rebate-eligible in CT and MA.
Homes powered
across CT, MA, and RI
Combined leadership exp.
Across our management team
Certified
Engineering & install standard
Customer satisfaction
From third-party post-install surveys
Avg. install time
Contract to live system
A 15-minute call, then a remote or on-site visit. Aurora-based design, panel and battery brand named on the proposal.
Permits filed, utility interconnection submitted, and equipment staged at our Bristol warehouse.
Local crew, local trucks. Most systems installed & completed in one day. Final inspection scheduled before we leave.
PTO from your utility, ITC and rebate paperwork filed, and 25 years of local service after the system goes live.
Connecticut, Massachusetts, and Rhode Island. Every pin is a Teamsun install. We're licensed in ME, NH, VT, and FL too.
Residential ITC no longer applies in New England, but with high energy costs, state rebates, and CT ESS coverage from $5,000 up to 100% by location, our systems will always save you money. Commercial systems also stack up to 40% federal ITC. We file every form with you.
Federal ITC
Up to 40%
Still available for commercial systems. Residential ITC no longer applies in New England, but our systems still save homeowners money on high energy costs.
CT ESS battery rebate
From $5,000
Certified CT ESS Install Program Partner. Minimum $5,000 rebate — depending on location, up to 100% of the battery cost can be covered.
Net metering
Full retail
1:1 offset on what your panels send back to Eversource or UI.
CT property tax exemption
$300 – $700/yr
System value excluded from your assessment. Sales tax also exempt.
Every Teamsun install is done by W-2 employees on our payroll, not subcontractors. The crew lead who walks your roof at the site visit is the same crew lead who installs your system, and the same person who picks up the phone in year five.
Senior Crew Lead
Crew Lead
Senior Designer
“Teamsun was the only crew that walked the roof, named the panel brand, and answered every question without checking with someone. Same lead tech came back a year later when I added a battery.”
“Three of my neighbors had Teamsun, so I called them. The crew was on my street five days after I signed.”
“They knew the historic district secretary by first name. Saved us six weeks on permitting alone.”
“Same lead tech who installed it came back four years later to swap an inverter under warranty. No charge, no excuses.”
A typical residential system runs $25,000 – $40,000 before incentives. Residential ITC no longer applies in New England, but with high regional energy costs, state rebates, and net metering, most homeowners still see effective costs 30 – 50% lower over the first five years.
47 days on average. About 7 – 10 days for the site visit, 20 – 30 days for permitting, one day for most installs, and 5 – 15 days for utility approval.
No. Every Teamsun install is done by W-2 employees on our payroll. The crew that walks your roof at the site visit is the same crew that installs it.
We bundle solar with re-roofing on the same timeline. One crew, one contract. We will not put panels on a roof that will need to come off in five years.
Yes. We retrofit batteries onto solar systems we did not install — most installers refuse this work. We are FranklinWH, Tesla Powerwall, and Enphase IQ certified.
Yes. Our PPA underwrites at 620 FICO. You pay $0 down and a fixed monthly rate that is typically below your current utility bill from day one.
CT ESS battery rebates (from $5,000, up to 100% of battery cost by location), MA Connected Solutions performance payments, full retail net metering, and CT property and sales tax exemptions. Commercial systems also stack up to 40% federal ITC; residential ITC no longer applies in New England — our high energy costs mean systems still save you money without it. We file every form with you.
You call our Bristol office and a person picks up. Manufacturer warranties cover panels for 25 years and inverters for 10 – 25 years.
Tell Teamsun about your property, energy goals, and questions. We will help you identify the right next step for the project.
Start with the property
Share the address,
utility, and project goal.
Confirm availability
Teamsun will confirm
coverage for your address.
Match the next step
Solar, storage, roofing,
EV charging, or service.
