Best Solar Companies in Connecticut
The installers worth your time across Connecticut, ranked honestly on licensing, warranty, equipment, and track record. SolarPro Lab is the homeowner's solar company and independent advocate. We vet installers and bring you the ones we would trust, we read the contract and compare options on your side, you choose who does the work, and we never sell your information to a list of callers.
What is different about going solar in Connecticut
Connecticut homeowners buy power from Eversource or United Illuminating, two of the highest residential rates in the country, which is what makes the solar math work here. The state replaced classic net metering with the Residential Renewable Energy Solutions (RRES) program, so the netting versus buy-all choice and your 20-year rate lock matter as much as the panel brand. A good CT installer enrolls you in the right RRES option and handles Eversource or UI interconnection without delays.
On incentives: the federal residential credit (Section 25D) expired December 31, 2025, so a cash or loan buyer gets no direct federal credit in 2026. The 30% is still reachable only through a prepaid lease, where the financing partner claims the commercial Section 48E credit and passes the value back as a lower prepaid price. CT Green Bank's Smart-E loan covers a cash-style purchase, and Connecticut exempts solar from both property and sales tax.
Go deeper: CT solar costs, CT incentives 2026, and the RRES net metering guide.
Going solar in Connecticut? Avoid both traps.
Solar companies only sell what they carry. Call them one by one and each will swear its panel and its deal are the best, because that is all they have. And being great at installs does not mean they are great at financing, equipment choice, or service years down the road.
Lead-gen sites sell your information to the highest bidder. Fill out one of those forms and the nonstop calls and spam start within minutes.
SolarPro Lab is neither. We are your independent advocate. We vet every installer, weigh their strengths and weaknesses across equipment, financing, and long-term service, compare all your real options on your side, read the contract with you, and never sell your information. One call, one representative, every option verified and simplified.
Compare your options with usRegion · CT
Top 5 Solar Companies in Connecticut
Ranked across equipment quality, warranty terms, customer experience, and local expertise. All companies hold valid licensing for their region.
Scroll right to see the full table →
| # | Company | Rating | Warranty | Best for | Action |
|---|---|---|---|---|---|
| 1 | 4.9 | 25 years (matches manufacturer) | Best Overall | See full review → | |
| 2 | 4.7 | 25-year full system warranty | Veteran-Owned | See full review → | |
| 3 | 4.7 | 12-year installation, 25-year on Enphase microinverters | Best Operating History | See full review → | |
| 4 | 4.6 | 25-year panel warranty, 10-year roof penetration | Premium Equipment Specialist | See full review → | |
| 5 | 4.2 | 10-year workmanship, 25-year system warranty | Best Multi-State Coverage | See full review → |
SunPol Solar
Best OverallNewington-based CT solar installer with 37+ five-star Google and public review mentions, CT Green Bank approval, and multiple payment paths instead of one pushed loan. SunPol designs, installs, and, for PPA and prepaid-lease customers, maintains the system for the life of the contract. Tier 1 panels and Enphase microinverters across the board, full liability insurance, and W-2 crews rather than subcontractors.
| Service area | 60+ CT towns, all eight counties |
| Workmanship warranty | 25 years (matches manufacturer) |
| Panels | Tier 1 (Maxeon, REC, Qcells options) |
| Inverters | Enphase IQ8 microinverters |
| Battery storage | Enphase IQ Battery, FranklinWH |
| Financing | Cash, $0-down PPA, prepaid lease, CT Green Bank Smart-E Loan |
Pros
- CT HIC #0698394, CT Green Bank approved
- W-2 employee install crews, not subcontractors
- Cash, PPA, prepaid lease, and CT Green Bank Smart-E paths are all on the table
- Enphase microinverter standard means no single point of failure
- Founder-led, Newington base, 60+ CT town footprint
Cons
- -Premium pricing relative to budget installers
- -4 to 6 week install queue when CT incentive windows open
Want a quote from SunPol Solar? We'll coordinate it for you.
Request QuotePremier Improvements Solar
Veteran-OwnedVeteran-owned, West Hartford solar installer with three CT branches. Founded 2020 but already a top-tier BuildZoom contractor. Reviewers repeatedly mention working with CT Green Bank financing rather than installer-bundled loans, and direct ownership access during the project.
| Service area | Statewide CT, West Hartford HQ with East Berlin and Stamford branches |
| Workmanship warranty | 25-year full system warranty |
| Panels | Tier 1 (model varies per project) |
| Inverters | Enphase, SolarEdge |
| Battery storage | Tesla Powerwall, Enphase IQ Battery |
| Financing | Cash, loan, CT Green Bank Smart-E Loan |
Pros
- Veteran-owned and operated
- 25-year full warranty on installations
- CT HIC #0556789, plus HIC.0659657 and HIS.0564240
- BuildZoom score 95 (top 22% of 12,000+ CT contractors)
- Works directly with CT Green Bank financing instead of pushing proprietary loans
Cons
- -Founded 2020, so shorter operating history than legacy installers
- -Smaller footprint than national chains
Want a quote from Premier Improvements Solar? We'll coordinate it for you.
Request QuoteEarthlight Technologies
Best Operating HistoryTim, Dana, and Sam Schneider opened Earthlight as a small Ellington energy-efficiency retailer in 2008. Eighteen years later it's a multi-state solar contractor in CT, MA, and OR. Reviewers consistently call out clear communication and technical depth. Enphase microinverters across all installs (the 25-year warranty on those is the longest residential inverter warranty in the industry).
| Service area | CT (Ellington HQ), Massachusetts, Oregon |
| Workmanship warranty | 12-year installation, 25-year on Enphase microinverters |
| Panels | Tier 1 panels with 20 to 40-year manufacturer warranties |
| Inverters | Enphase (25-year microinverter warranty) |
| Battery storage | Enphase IQ Battery, Tesla Powerwall |
| Financing | Cash, loan, CT Green Bank |
Pros
- Founded 2008 by the Schneider family in Ellington, CT
- Started in residential energy efficiency before adding solar
- Consistently positive customer reviews across BBB, Yelp, and BestCompany
- 25-year Enphase microinverter coverage included standard
- Family-owned, three-state operation with CT roots
Cons
- -12-year workmanship warranty is solid but not the longest on this list
- -Tolland County HQ means travel time to coastal CT installs
Want a quote from Earthlight Technologies? We'll coordinate it for you.
Request QuoteSavkat Solar
Premium Equipment SpecialistFounded in 2017 by Steven Salansky and Liz Karnuk in West Hartford, now based in Bristol, CT. Savkat installs only premium-tier equipment (REC Alpha, Maxeon, Qcells panels paired with FranklinWH or Enphase batteries) and adds a 10-year roof penetration warranty on top of the manufacturer coverage. Single point of contact for all warranty service is the differentiator most reviewers highlight.
| Service area | Bristol HQ, serving Connecticut and greater New England |
| Workmanship warranty | 25-year panel warranty, 10-year roof penetration |
| Panels | REC Alpha, Qcells, SunPower Maxeon, Pegasus |
| Inverters | Enphase, SolarEdge |
| Battery storage | FranklinWH, Enphase IQ Battery |
| Financing | Cash, loan |
Pros
- Premium-only equipment lineup (REC, Maxeon, Qcells, FranklinWH)
- Single point of contact for warranty service across all components
- 10-year roof penetration warranty layered on top of manufacturer coverage
- Family-owned and operated since 2017
- Solar plus roofing plus EV charging under one roof
Cons
- -Some post-install communication complaints in third-party reviews
- -Premium-tier pricing reflects the equipment selection
Want a quote from Savkat Solar? We'll coordinate it for you.
Request QuoteVenture Solar
Best Multi-State CoverageNortheast multi-state installer founded 2015. The standout feature versus CT-native installers is the lease option, which most CT contractors do not offer, paired with a 25-year system warranty and a large Google review footprint. We do not treat paid rating badges as deciding credit. The trade-off is a shorter workmanship warranty and a less localized service experience.
| Service area | CT, NY, NJ, MA, RI, NH, ME, DE, PA |
| Workmanship warranty | 10-year workmanship, 25-year system warranty |
| Panels | Multiple Tier 1 brands (varies by project) |
| Inverters | Enphase, SolarEdge |
| Battery storage | Tesla Powerwall, Enphase IQ Battery |
| Financing | Cash, solar loan, lease |
Pros
- Cash, loan, and lease all available (lease is rare in CT)
- 25-year system warranty plus 10-year workmanship
- Google review profile is large enough to spot service patterns, not just one-off praise
- Same contractor across the Northeast if you have multiple properties
Cons
- -10-year workmanship is short next to SunPol's 25-year
- -Mixed reviews on customer-service follow-up after install
- -Multi-state operation means less localized CT institutional knowledge
Want a quote from Venture Solar? We'll coordinate it for you.
Request QuoteHow to read this list
The ranking is only useful if it helps you avoid a bad contract
Most Connecticut ranking pages stop at star ratings and brand names. That is not enough. A homeowner can hire a highly rated installer and still end up with a loan that has a dealer fee buried in the payment, a lease with confusing buyout language, or a system enrolled in the wrong Residential Renewable Energy Solutions option. The installer matters. The contract and payment structure matter just as much.
SolarPro Lab looks at the whole deal: published program access, real payment paths, equipment, Google review patterns, utility interconnection experience, and whether the financing choice actually fits the home. A paid rating badge is not treated as a deciding credit. In 2026, the bigger question is whether the company can show cash, loan, prepaid lease, and lease pricing clearly enough for a homeowner to compare the actual cost.
Licensing and insurance
Does the company have the Connecticut Home Improvement Contractor registration and insurance a homeowner should expect before roof work starts?
Contract terms
Are the payment, warranty, roof penetration, production, and buyout terms clear enough to explain without a sales rep in the room?
Local utility experience
Does the installer know Eversource, United Illuminating, RRES enrollment, town permitting, and CT Green Bank paperwork?
Three Connecticut questions to ask before you pick an installer
| Question | Why it matters in CT | What a strong answer sounds like |
|---|---|---|
| Which RRES option are you modeling? | Connecticut's Residential Renewable Energy Solutions program is not old one-to-one net metering. Netting and buy-all can produce different outcomes. | They can explain the option, show the modeled credit value, and tie it to your actual Eversource or United Illuminating bill. |
| What happens if I sell the house? | A loan, prepaid lease, standard lease, and power purchase agreement transfer differently. This is where buyer's remorse often starts. | They can walk through payoff, transfer, Uniform Commercial Code filings if applicable, and what the buyer has to assume. |
| Where is the 30% showing up? | For 2026 homeowners, the old residential credit is not available on a direct purchase. A 30% claim needs Section 48E mechanics through a third-party-owned structure. | They can separate cash, loan, prepaid lease, and standard lease without pretending every path gets the same federal treatment. |
If an answer feels rushed, ask SolarPro Lab to read the quote with you before you sign. The point is not to make solar harder. It is to make the decision clear enough that you can sleep on it.
Before you sign
A 10-minute Connecticut installer check beats a week of sales calls
The big ranking sites can tell you who advertises heavily or has a pile of reviews. They usually do not tell you whether the exact company on your contract is the one registered with the state, who is responsible for electrical work, or what happens if your town permit stalls. Do this quick check before you let anyone put a design in front of you.
| Check | Where to look | What you want to see | Slow down if |
|---|---|---|---|
| Business registration | Connecticut eLicense lookup | The legal name on the contract matches a current Connecticut home improvement registration. | The salesperson gives a DBA, parent company, or out-of-state name that does not match the paperwork. |
| Electrical accountability | Contract scope and permit packet | A licensed electrical contractor is named for the electrical work, not just a solar sales brand. | Nobody can say who pulls the electrical permit or signs off on the interconnection documents. |
| Utility enrollment | RRES paperwork and proposal | The quote states whether it uses netting or buy-all under Residential Renewable Energy Solutions. | The proposal says net metering in generic terms and never shows the Connecticut program choice. |
| Financing math | Cash price, financed price, and lease terms | You can compare the cash price, loan price, prepaid lease price, and monthly lease or power purchase agreement in one place. | The 30 percent credit is shown as if every payment path gets the same federal treatment in 2026. |
What SolarPro Lab does with this check
SolarPro Lab runs this review before recommending a Connecticut installer, then reads the quote with the homeowner so the license, RRES choice, equipment, warranty, and payment structure all point in the same direction. If a quote is already on your kitchen table, bring it to us before you sign.
Connecticut solar quote red flags
A weak quote usually gives itself away before you sign. Watch for these, especially if the pitch is built around urgency instead of math.
No CT HIC number
Ask for the Connecticut Home Improvement Contractor registration and verify it before roof work starts.
Dealer fees hidden inside a loan
A low payment can hide an inflated contract price. Ask for the cash price and financed price side by side.
Vague panel language
Tier 1 is not a model number. Get the exact panel, inverter, battery, and racking spec in writing.
No RRES explanation
The installer should explain netting versus buy-all in plain English, not treat utility enrollment as an afterthought.
Same-day discount pressure
Real Connecticut incentive rules have dates and documents. They are not a midnight coupon.
Unclear roof warranty
A workmanship warranty should say who fixes a roof leak, how fast they respond, and how long the promise lasts.
Connecticut Solar FAQ
Are solar panels worth it in Connecticut?
For most Connecticut homeowners, yes. Eversource and United Illuminating charge some of the highest electric rates in the country, so the money you stop sending the utility usually outweighs the cost of the system. Whether it pencils out for your specific home comes down to your roof, your shade, and your usage, which is exactly what we check for you before you commit to anything.
How much do solar panels cost in Connecticut?
It depends on system size, your roof, and the equipment you choose, so treat any flat number with caution. Rather than taking one company's price at face value, we walk you through a real estimate for your home and compare what each vetted installer would charge, so you can tell whether a quote is fair.
Are solar panels free in Connecticut?
No. "Free solar" is a marketing line, usually for a lease or a power purchase agreement where a company owns the panels on your roof and you pay them for the power instead of the utility. It is not free, it is a different bill. We explain the real tradeoffs of owning versus leasing so you know exactly what you are signing.
Do I still get the 30 percent federal tax credit in Connecticut in 2026?
Not as a cash or loan buyer. The federal residential credit, Section 25D, expired on December 31, 2025, so a straight purchase gets no direct federal credit in 2026. The 30 percent is still reachable through a prepaid lease, where the financing partner claims the commercial Section 48E credit and passes the value back as a lower prepaid price. Connecticut also exempts solar from property and sales tax, and CT Green Bank's Smart-E loan covers a cash-style purchase.
How does net metering work in Connecticut?
Connecticut replaced classic net metering with the Residential Renewable Energy Solutions program, or RRES. Instead of a simple one-to-one credit, you choose between a netting option and a buy-all option with a 20-year rate lock, so that choice can matter as much as the panel brand. A good installer enrolls you in the right RRES option and handles Eversource or United Illuminating interconnection without delays.
Should I lease or buy solar panels in Connecticut?
It depends on your goals, your taxes, and how long you plan to stay in the home. Owning usually builds the most long-term value, while a prepaid lease is the one path that still captures the 30 percent credit in 2026. There is no single right answer, and a salesperson who only sells one option cannot give you a straight comparison. We lay both side by side for your situation.
Why use SolarPro Lab instead of calling Connecticut installers myself?
Call five installers and you get five sales pitches, each one telling you their panel and their deal are the best, because that is all they sell. We are independent. We vet the installers, compare every option on your side, read the contract with you, and never sell your information. One call to us, every option verified and simplified.
How do I check whether a Connecticut solar installer is licensed?
Start with Connecticut's eLicense lookup and search the business name before you sign. For residential solar, you want the company to be properly registered for home improvement work and you want the electrical work handled by properly licensed people. If the name on the contract, the salesperson's name, and the license lookup do not line up, slow down and ask for the paperwork in writing.
Sources
The Connecticut rate, Residential Renewable Energy Solutions, incentive, and federal-credit details on this page come from public agencies and program administrators. Confirm current figures for your own project before signing.
- U.S. Energy Information Administration, Connecticut electricity profile
- Connecticut PURA, Residential Renewable Energy Solutions context
- Connecticut PURA, Residential Renewable Energy Solutions program
- Connecticut Department of Consumer Protection, home improvement applications
- Connecticut eLicense lookup
- Sustainable CT, Smart-E Loans overview
- IRS, Residential Clean Energy Credit, Section 25D
Ready to Compare Connecticut Installers?
Tell us about your home and we'll line up the right CT installers for you to compare side by side. No pressure, your bill pays for solar instead of the utility, and your number is never shared with anyone but SolarPro Lab.
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