Best Solar Companies in Connecticut (2026)
We evaluated 7 Connecticut solar installers on equipment quality, warranty terms, local licensing, customer reviews, and CT-specific expertise. Here's what we found — including which red flags to watch out for before you sign anything.
⚠️ Federal solar ITC expired December 31, 2025. CT state incentives remain — see below.
Quick Comparison: All 7 CT Solar Companies
Sorted by our overall ranking. Scroll right on mobile to see all columns.
| # | Company | Rating | CT HIC | BBB | Workmanship Warranty | Best For |
|---|---|---|---|---|---|---|
| 1 | SunPol SolarBest Overall | 4.9 | A+ | 25 years | Best Overall | |
| 2 | Connecticut Solar SolutionsBest for Western CT | 4.6 | A | 10 years | Best for Western CT | |
| 3 | New England Solar GroupBest for Hartford County | 4.5 | A | 10 years | Best for Hartford County | |
| 4 | BlueSky Energy CTBest for Battery Storage | 4.3 | B+ | 10 years | Best for Battery Storage | |
| 5 | Greenfield SolarBest Budget Option | 4.2 | B+ | 5 years | Best Budget Option | |
| 6 | Harbor SolarBest for Coastal Properties | 4.0 | B | 10 years | Best for Coastal Properties | |
| 7 | Northeast Power SystemsWorth Considering | 3.8 | B | 5 years | Worth Considering |
SunPol Solar
4.9SunPol Solar stands out in the Connecticut market for its combination of premium equipment, the strongest workmanship warranty we've seen from any CT installer, and genuine local expertise across all eight CT counties. Unlike national chains that sub-contract installations, SunPol's crews are W-2 employees trained specifically for Connecticut's roof types, permitting offices, and utility interconnection processes. Their pricing is higher than budget competitors — expect 10–15% more than the market median — but the warranty terms, equipment quality, and accountability structure justify the premium for homeowners who plan to stay in their homes long-term.
Equipment & Service
- Founded:
- 2018
- Service Area:
- All CT + Westchester, NY
- Panels:
- SunPower Maxeon, REC Alpha, Panasonic EverVolt
- Inverters:
- Enphase IQ8, SolarEdge HD-Wave
- Battery Storage:
- Enphase IQ Battery, Tesla Powerwall 3
- Financing:
- Cash, Mosaic loan, CT Green Bank Smart-E Loan
Warranty Coverage
- Workmanship:
- 25 years
- Panels:
- 25 years (product + performance)
- Inverter:
- 12 years (extended)
Pros
- Strongest workmanship warranty in CT (25 years)
- CT Green Bank certified contractor
- Premium panel options — no commodity equipment
- Local team with full CT permitting expertise
- Handles both Eversource and United Illuminating interconnection
Cons
- —Premium pricing — not the lowest quote
- —4–6 week installation wait list during peak season
Rankings #2–7: Full Reviews
All companies reviewed hold valid Connecticut HIC licenses. Ratings reflect equipment quality, warranty terms, customer feedback patterns, and local CT expertise.
Connecticut Solar Solutions
Best for Western CTConnecticut Solar Solutions has operated in Fairfield and New Haven counties since 2012, giving them one of the longest local track records in western CT. Their pricing is competitive and their customer reviews are consistently positive for communication and post-install responsiveness. If you're in Fairfield County and cost is a significant factor, they're a credible choice. The 10-year workmanship warranty is industry-standard but falls short of SunPol's 25-year coverage.
New England Solar Group
Best for Hartford CountyNew England Solar Group's 15-year operating history in Connecticut's Hartford County market is their strongest asset. NABCEP-certified technicians and a deep relationship with Hartford-area permitting offices translate to fewer surprises during installation. The tradeoff is a slower project pipeline — if you're in a hurry, their 8–12 week timeline may frustrate. A solid, trustworthy choice for central CT homeowners willing to wait for an experienced team.
BlueSky Energy CT
Best for Battery StorageBlueSky Energy CT built its reputation specifically around battery storage integration — if adding a Powerwall or Enphase IQ Battery is central to your project, they're worth a quote. Their solar-only installations are competent but not distinguished. For homeowners prioritizing backup power, time-of-use arbitrage, or EV charging optimization, BlueSky's storage system design expertise is the best in Connecticut.
Greenfield Solar
Best Budget OptionGreenfield Solar is the budget option for Connecticut homeowners with straightforward asphalt-shingle roofs who are primarily price-motivated. Their Jinko and LONGi panels are reliable tier-1 manufacturers — not premium, but not junk. The 5-year workmanship warranty is the biggest concern: if something goes wrong in year 7, you're paying out of pocket. Best suited for simple installations where you want a lower upfront cost and are comfortable with more risk on the back end.
Harbor Solar
Best for Coastal PropertiesHarbor Solar's niche is coastal Connecticut — they understand salt-air corrosion resistance, FEMA flood zone permitting, and coastal wind load engineering better than most general installers. Their cash-only financing model is a dealbreaker for many customers, and their B BBB rating warrants careful reference checking. If you're on the shoreline and have quotes from non-specialist installers, Harbor Solar's coastal-specific design may be worth comparing.
Northeast Power Systems
Worth ConsideringNortheast Power Systems is a newer entrant that has grown quickly by targeting commercial-adjacent residential projects. Their residential track record is thinner than competitors, and customer reviews note inconsistent communication during the installation process. They're worth a quote if you have a larger system (12kW+) and want a commercial-oriented installer, but verify the equipment specification and warranty terms in writing before committing.
Connecticut Solar Incentives in 2026
What's still available after the federal ITC expired on December 31, 2025.
⚠️ Federal ITC Gone: The 30% federal residential solar tax credit (Section 25D) expired December 31, 2025. No federal credit is available for Connecticut homeowners in 2026. CT state programs remain fully active.
CT Green Bank Smart-E Loans
As low as 0% APRLow-interest financing through participating CT lenders. Income-qualified households may receive 0% APR. Available statewide through Salisbury Bank, Ion Bank, and other partners.
Full Retail Net Metering
Earn credits at full retail rateConnecticut's PURA requires Eversource and United Illuminating to credit excess solar production at the full retail electricity rate — currently $0.28–$0.30/kWh. This is among the best net metering policies in the Northeast.
Property Tax Exemption
100% exemptConnecticut fully exempts residential solar installations from property tax assessment. A $30,000 system that adds $25,000 to your home's value generates zero additional property tax.
Sales Tax Exemption
6.35% CT sales tax waivedAll solar equipment and installation labor is exempt from Connecticut's 6.35% sales tax. On a $28,000 system, that saves approximately $1,778 off the top.
Learn more about Connecticut solar costs and incentives on our CT Solar Cost & Savings guide.
2026 CT Solar System Cost Estimates
Prices reflect CT market rates after sales tax exemption. Federal ITC is not included — it expired December 31, 2025.
| System Size | Gross Cost | After CT Exemptions | Est. Payback | Est. Annual Savings |
|---|---|---|---|---|
| 6 kW | $16,500–$21,000 | $15,500–$19,700 | 12–15 yrs | ~$1,300 |
| 8 kW | $22,000–$28,000 | $20,600–$26,200 | 11–13 yrs | ~$1,800 |
| 10 kW | $27,500–$35,000 | $25,800–$32,800 | 10–13 yrs | ~$2,400 |
| 12 kW | $33,000–$42,000 | $30,900–$39,300 | 10–12 yrs | ~$3,000 |
Estimates for CT installations as of March 2026. Actual cost varies by roof type, shading, location, and equipment selected. Federal residential solar tax credit (Section 25D) expired January 1, 2026 — not reflected above. Consult a tax professional for your specific situation.
How We Ranked These Companies
SolarPro Lab evaluated Connecticut solar installers across six criteria: CT HIC licensing status, workmanship warranty length, equipment tier (panels and inverters), BBB standing and complaint history, verified customer review patterns, and demonstrated local expertise in CT-specific factors (utility interconnection, permitting timelines, local incentive navigation).
We did not accept payment from any company for placement in these rankings. We contacted each company directly, reviewed sample proposals, and cross-referenced CT DEEP solar installation data and PURA filings where available.
Disclosure: SolarPro Lab facilitates solar installations in Connecticut through its installer network, which includes SunPol Solar. Our editorial rankings reflect our independent assessment of each company's merits. SunPol Solar earned the #1 position on quality criteria, not on the basis of our business relationship.
6 Red Flags to Watch for in CT Solar Quotes
Connecticut's solar market has its share of aggressive and low-accountability installers. These are the warning signs that should make you walk away.
No CT HIC License
Connecticut requires every home improvement contractor — including solar installers — to carry a valid HIC license. Ask for the number and verify it at ctdcp.com before signing anything.
Same-Day Signing Pressure
Reputable CT solar companies give you time to review proposals. If a sales rep insists the price expires tonight or that you must sign at the kitchen table, that's a sales manipulation tactic, not a real deadline.
Vague Equipment Specs
Your proposal should name the specific panel model, inverter model, and racking manufacturer before you sign. "Tier-1 panels" is not a specification. Get the make and model in writing.
Workmanship Warranty Under 10 Years
The manufacturer warranties your panels for 25 years. Your installer's workmanship warranty should cover at least 10 years — anything shorter signals the company isn't confident they'll be around or that you'll need service.
Flat Electricity Rate Projections
Honest savings projections assume CT electricity rates will increase roughly 2–3% per year. If a proposal shows savings based on today's rate held flat for 25 years, the real savings are being understated — or the numbers are being manipulated to make the payback look better.
No Local Office
National solar chains that sub-contract installations in CT often have no local accountability. If your system has a problem in year 9, you need a company with a Connecticut phone number, physical office, and licensed technicians who can show up.