Solar Installer for New Haven County, CT
New Haven County splits between United Illuminating and Eversource, with a town-owned utility in Wallingford. SunPol Solar checks yours first, then handles permits and paperwork.
Registered: CT HIC #0698394 · MA HIC #220128 · Based in Newington, CT · 5.0 stars on Google
- Registered Connecticut Home Improvement Contractor (CT HIC #0698394)
- 100+ completed installations company-wide
- A licensed engineer is on SunPol designs
- Office: 125B Rockwell Rd, Newington, CT 06111
Three kinds of electric utility in New Haven County
United Illuminating's service territory includes 17 Connecticut towns, and eleven of them are on this page: Ansonia, Derby, East Haven, Hamden, Milford, New Haven, North Branford, North Haven, Orange, West Haven and Woodbridge. Eversource's list also names Hamden, North Branford and Woodbridge, so for those three your bill decides. The rest of the table is Eversource, except Wallingford.
Wallingford Electric Division is a town-owned utility that serves Wallingford and a portion of Northford. Eversource's list also names Wallingford and North Branford, so check your bill. The division publishes a policy for customer-owned, net-metered renewable installations (its policy E-8); ask the division for its current terms before design.
In town-owned territory SunPol offers a cash purchase or a loan only. The Solar PPA, Propel and the Prepaid Solar Program are not offered there.
Permit details that differ by town
- On the state's building-official list (updated April 2026), 21 of the 27 towns have a full-time official and 6 a part-time one (Ansonia, Beacon Falls, Bethany, Milford, Prospect and Woodbridge).
- Beacon Falls and Seymour share one listed building official.
- New Haven and Woodbridge share one listed building official.
- Bethany and Stratford share one listed building official.
- Orange and Plainfield share one listed building official.
- Guilford is one of two Connecticut towns the Governor's 2026 testimony on HB 5036 names as already using SolarAPP+, an automated rooftop-solar permitting platform developed by the National Renewable Energy Laboratory.
- Mailing village: Northford (North Branford).
- Towns with local historic districts on lhdct.org: Ansonia, Cheshire, Guilford, Madison, Milford, New Haven, Orange and Southbury. A local district commission can set design conditions on solar but may not deny it unless the system cannot be installed without substantially impairing the historic character and appearance of the district (C.G.S. §7-147f).
- Ansonia: Ansonia Historic District
- Cheshire: Cornwall Avenue Town Center and South Brooksvale
- Guilford: Guilford Town Center and Whitfield Street
- Madison: Madison Historic District and Old Elm Street
- Milford: Milford Historic District and South of the Green
- New Haven: City Point, Quinnipiac River and Wooster Square
- Orange: Orange Center Historic District
- Southbury: South Britain and Southbury Historic District No. 1
- SunPol hand-delivers permit applications in Ansonia, Beacon Falls, Bethany and Branford.
Where SunPol has installed
SunPol has completed installations in 5 of the 27 towns below (Beacon Falls, Cheshire, Hamden, Meriden and Wolcott).
Your town: utility and permit office
| Town | Electric utility | State-list building official | Villages, districts and notes |
|---|---|---|---|
| Ansonia | United Illuminating (UI) | Part-time | historic district |
| Beacon Falls | Eversource | Part-time | — |
| Bethany | Eversource | Part-time | — |
| Branford | Eversource | Full-time | — |
| Cheshire | Eversource | Full-time | historic districts |
| Derby | United Illuminating (UI) | Full-time | — |
| East Haven solar permits and utility steps | United Illuminating (UI) | Full-time | — |
| Guilford | Eversource | Full-time | historic districts |
| Hamden | UI and Eversource both list this town; your bill decides | Full-time | — |
| Madison | Eversource | Full-time | historic districts |
| Meriden solar permits and utility steps | Eversource | Full-time | — |
| Middlebury | Eversource | Full-time | — |
| Milford solar permits and utility steps | United Illuminating (UI) | Part-time | historic districts |
| Naugatuck | Eversource | Full-time | — |
| New Haven solar permits and utility steps | United Illuminating (UI) | Full-time | historic districts |
| North Branford | UI and Eversource both list it; Wallingford Electric Division serves a portion of Northford | Full-time | also mailed as Northford; if town-owned utility: cash or loan only |
| North Haven | United Illuminating (UI) | Full-time | — |
| Orange | United Illuminating (UI) | Full-time | historic district |
| Oxford | Eversource | Full-time | — |
| Prospect | Eversource | Part-time | — |
| Seymour | Eversource | Full-time | — |
| Southbury | Eversource | Full-time | historic districts |
| Wallingford | Wallingford Electric Division; Eversource also lists Wallingford | Full-time | if town-owned utility: cash or loan only |
| Waterbury solar permits and utility steps | Eversource | Full-time | — |
| West Haven | United Illuminating (UI) | Full-time | — |
| Wolcott solar permits and utility steps | Eversource | Full-time | — |
| Woodbridge | UI and Eversource both list this town; your bill decides | Part-time | — |
Where two utilities are listed, your electric bill decides.
Ways to go solar in New Haven County
- Solar PPA: pay for the power from 16¢/kWh† for qualified customers, no upfront system cost, yearly increase 0% to 2.99%†. You will still get a utility bill.
- Direct ownership: cash purchase or loan, same price; you own the system, with SunPol's 10-year workmanship warranty.
- Propel: always loan-financed; SolSource owns the system first and a prefunded Early Buyout is applied after Contract Year 5 unless you opt out§. Project and lender approval required.
- Batteries: Tesla Powerwall 3 with a Solar PPA, direct ownership or Prepaid; FranklinWH aPower 2 with direct ownership; Enphase IQ Battery 10C with Propel. A home battery on its own: a 10- or 12-year Tesla Powerwall 3 lease through our financing partner, or a cash or loan purchase of a Tesla Powerwall 3 or FranklinWH aPower 2. Backup for your essential circuits; run time depends on your usage and battery size. You will still get a utility bill.
- Prepaid Solar Program: 30% lower program price than buying the same system*, paid upfront, no monthly payments to SunPol*, 25 years of system coverage*, for systems in service by Dec 31, 2027*. You will still get a utility bill.
Homes served by a municipal electric utility can choose a cash purchase or a solar loan; the Solar PPA, Propel and the Prepaid Solar Program aren't offered there.
Prepaid Solar Program: how it compares with buying
- The Prepaid Solar Program is one price paid upfront for 25 years, with no monthly program payments: exactly 30% less than buying the same system, for systems in service by December 31, 2027.
- Estimated breakeven is about 8–10 years,
- with an estimated $30,000–$60,000 in savings over 25 years.
Savings are not guaranteed. You will still get a utility bill.
How it works
- Share your bill. About 2 minutes.
- Get your custom design. Payment options with real numbers, on a 30-minute call.
- We handle the rest. Permits, installation and utility paperwork, with UI, Eversource or Wallingford Electric Division depending on your address.
What happens in the consultation
Free, no obligation, by Google Meet or phone (in-home available). If solar isn't right for your home, we'll tell you. SunPol is homeowner-only.
New Haven County solar questions
Which electric company serves my New Haven County address?
United Illuminating serves eleven of the towns listed on this page, Eversource serves most of the rest, and Wallingford Electric Division serves Wallingford and a portion of Northford. Hamden, North Branford and Woodbridge are listed by both UI and Eversource, so your electric bill decides.
Can I use the Prepaid Solar Program in Wallingford?
Not if your electricity comes from Wallingford Electric Division. Homes served by a municipal electric utility can choose a cash purchase or a solar loan; the Solar PPA, Propel and the Prepaid Solar Program aren't offered there.
Does SunPol offer every option in every New Haven County town?
In UI and Eversource towns a SunPol Solar Advisor can show you a Solar PPA, direct ownership (cash or loan) and Propel where your project qualifies side by side, plus a home battery on its own and the Prepaid Solar Program. In town-owned utility territory the choice is a cash purchase or a loan. You will still get a utility bill.
How much less does the Prepaid Solar Program cost than buying?
Your price is 30% less than buying the same system. Your free design shows your exact price and the estimated breakeven. Savings are not guaranteed. You will still get a utility bill.
Who handles the permits?
SunPol handles your building permit and utility paperwork. The licensed electrician on your installation team files the electrical permit. Each town's permit-office status is listed on this page. SunPol hand-delivers permit applications in the New Haven County towns named above.
Which New Haven County towns are served only by UI?
Ansonia, Derby, East Haven, Milford, New Haven, North Haven, Orange and West Haven appear on UI's list but not Eversource's.
Also see
- Meriden solar permits and utility steps
- Milford solar permits and utility steps
- East Haven solar permits and utility steps
- Waterbury solar permits and utility steps
- Wolcott solar permits and utility steps
- New Haven solar permits and utility steps
- Fairfield County
- Middlesex County
- Litchfield County
- All Connecticut solar
