- Connecticut electricity is among the priciest in the country. Residential power in the state averages about 30 cents per kWh (EIA, as of March 2026), so every kilowatt-hour your roof makes offsets a costly grid one (EIA).
- Your utility is United Illuminating, not Eversource. New Haven sits in UI territory, and UI applies Connecticut’s Residential Renewable Energy Solutions (RRES) tariff instead of traditional net metering (United Illuminating RRES; Connecticut PURA RRES, as of 2026).
- You choose Buy-All or Netting, and the rate locks for 20 years. UI’s 2026 Buy-All rate is about 33 cents per kWh, set by PURA, while Netting credits the power you export (United Illuminating RRES, as of 2026).
- Connecticut waives sales and property tax on solar, but has no state income-tax credit. Solar equipment is exempt from the 6.35% sales tax, and the added home value is exempt from property tax (CT OLR, 2025 Acts Affecting Energy and Utilities, as of 2026).
- A new 2026 charge applies if you pick Netting. RRES Netting projects applying on or after January 1, 2026 carry a non-bypassable Solar Production Charge on their generation, about 4 cents per kWh ($0.0402/kWh) on UI’s 2026 Netting schedule, fixed for 20 years and set by PURA; Buy-All does not have it (United Illuminating Rider RRES, effective 2026, as of 2026).
- The 30% federal homeowner credit (Section 25D) ended after December 31, 2025 (IRS, as of January 1, 2026), so a New Haven homeowner who buys solar in 2026 cannot claim it.
New Haven homeowners pay some of the highest electricity prices in the country, and that single fact is the biggest reason rooftop solar pays off here. The wrinkle is local: your utility is United Illuminating, not Eversource, and Connecticut no longer uses plain net metering. You pick how you get paid for your solar before you switch the system on, and United Illuminating publishes its own 2026 rates for that choice. This page walks through what solar really costs in New Haven, how United Illuminating pays you under the state RRES program, the Connecticut incentives that do and do not exist, and the older-home and historic-district details that matter in a dense university city, then you can check your own address in about a minute.
Why New Haven’s electric rates make solar worth it
The reason solar pays in New Haven is the price of the power it replaces. Residential electricity in Connecticut averages about 30 cents per kWh (EIA, as of March 2026), one of the highest rates in the nation, so every kilowatt-hour your roof produces offsets an expensive one you would otherwise buy from United Illuminating (EIA). A New Haven home spending $150 or more a month on electricity is a strong solar candidate. For the exact cents on your own bill, read the supply and delivery lines on your United Illuminating statement, since both reset on a schedule and UI’s delivery charges are a large part of the total. UI’s residential delivery rates have historically run at the high end of Connecticut, which only strengthens the case here.
Your production is what turns that high rate into savings. New Haven sits on Long Island Sound and gets a solar resource typical of coastal southern New England, and a well-placed roof offsets a large share of a normal home’s annual use. Because output depends on your roof’s pitch, shading, and orientation, and because New Haven’s older, tree-lined neighborhoods like East Rock and Westville add shading, estimate your specific roof with NREL’s free PVWatts calculator rather than a generic number. Your production drives how much your RRES payments are worth, so it is worth getting right before you size a system.
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United Illuminating, not Eversource: how New Haven gets paid for solar
This is the part of going solar in New Haven that people get wrong, so start here. Many homeowners assume Connecticut means Eversource, but New Haven is served by United Illuminating, and the rates and account paperwork are UI’s, not Eversource’s (United Illuminating RRES, as of 2026). On top of that, Connecticut closed traditional retail net metering to new residential solar and replaced it with the Residential Renewable Energy Solutions (RRES) tariff, run by the Public Utilities Regulatory Authority (PURA) and delivered through both UI and Eversource (Connecticut PURA RRES, as of 2026). When you go solar, you pick one of two payment structures, and whichever you choose, your rate is locked in for 20 years from interconnection. The choice is generally permanent, so understand it before you sign.
Buy-All and Netting pay you in different ways. Under Buy-All, UI buys every kilowatt-hour your panels make, plus the renewable energy certificates, at a fixed rate, while you keep buying all of your home’s electricity at the normal retail rate. Under Netting, your solar offsets your own usage first and only the excess you export to the grid earns an on-bill credit, which is closer to the old net-metering model. United Illuminating’s 2026 Buy-All rate is about 33 cents per kWh, but PURA sets the exact figure in its tariff docket for each program year, so confirm the current number against UI’s 2026 RRES page and the RRES program manual before you choose (United Illuminating RRES, as of 2026). For the mechanics behind export credits, see how net metering credits your solar exports.
| RRES option (United Illuminating) | How you are paid | Best fit |
|---|---|---|
| Buy-All | UI buys 100% of your generation and the RECs at a fixed 20-year rate (about 33 cents per kWh for 2026); you buy all your usage at retail | Homes that produce a lot relative to daytime use; you want the highest per-kWh payment |
| Netting | Your solar offsets on-site use first; only exported kWh earn an on-bill credit at UI’s retail rate; a 2026 Solar Production Charge applies to your generation | Homes that use a lot of power during daylight hours and want to self-supply |
Connecticut added a non-bypassable Solar Production Charge, also called a Solar Energy Adjustment, that applies to RRES Netting projects, not Buy-All, for systems applying on or after January 1, 2026. It is a per-kWh charge on your total generation, measured at the production meter and fixed for 20 years, and runs about 4 cents per kWh ($0.0402/kWh) on United Illuminating’s 2026 Netting schedule (United Illuminating Rider RRES, effective 2026; Connecticut PURA RRES Program Manual, as of 2026). Because PURA sets the figure for each program year, ask your installer to model both options at the current numbers and confirm the charge on UI’s RRES schedule before you pick Netting.
Connecticut’s other solar benefits, on a New Haven home
Beyond the RRES payment, Connecticut helps in two ways that lower your cost rather than paying you per kilowatt-hour. One thing to know up front: Connecticut does not offer a state solar income-tax credit or a general cash rebate, so do not expect a state version of the credit you may have read about.
- A 100% state sales-tax exemption on qualifying solar equipment, off Connecticut’s 6.35% sales and use tax (CT OLR, as of 2026).
- A property-tax exemption on the added home value from a qualifying residential solar system, so your New Haven assessment should not rise because of the panels (CT OLR, 2025 Acts Affecting Energy and Utilities, as of the 2025 assessment year onward).
- An energy-storage rebate through Connecticut’s Energy Storage Solutions program, an up-front incentive for pairing a home battery with solar, with higher amounts for income-eligible and underserved customers; the exact per-kWh amounts are set by PURA, so confirm the current figure before you count on it (DSIRE Connecticut, as of 2026).
- Low-interest financing through the Connecticut Green Bank’s Smart-E Loan, a fixed-rate loan offered through participating local lenders for solar, batteries, and other home energy upgrades, which is how many New Haven homeowners avoid a large up-front cost (Connecticut Green Bank, as of 2026).
Because these are statewide programs that change over time, we keep the full detail on our Connecticut solar guide and our United Illuminating solar page rather than repeating it on every city page. New Haven also has a strong community-solar and municipal-solar scene if your roof is not a good fit, and Connecticut reauthorized its rooftop and community solar programs, including RRES, through 2035 in a 2026 law (CT Mirror, as of 2026), so the framework is set to stick around.
What the federal tax-credit change means for New Haven
The federal homeowner credit is gone, but Connecticut’s programs are not. The 30% federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act, so a New Haven homeowner who buys solar with cash or a loan in 2026 cannot claim it (IRS Residential Clean Energy Credit; SEIA, as of 2026). You will still see installer pages, and even a stale Connecticut state web page, suggesting the 30% credit runs through 2032; the accurate answer for 2026 is that the homeowner version already ended after December 31, 2025. The RRES payment, the sales and property-tax exemptions, and Connecticut’s very high electricity rates were not affected, and the bill offset plus the 20-year RRES rate still carry the case. For the full timeline, see what the federal solar tax-credit change means in 2026.
One federal exception exists, and it is not yours to claim. A separate commercial credit, Section 48E, is claimed by the business that owns a leased or PPA system, not by the homeowner (IRS Clean Electricity Investment Credit, as of 2026). On a leased system you do not file for a federal credit yourself; the company that owns the panels does. The 25D homeowner credit, by contrast, ended after December 31, 2025.
Going solar on a New Haven home
New Haven’s housing stock is what shapes its solar projects. This is a dense, historic university city, with Victorian homes around East Rock, the brick row houses and the historic district of Wooster Square, the cottages of City Point and Westville, and many of Fair Haven’s flat-roofed multifamily and triple-decker properties. That mix rarely rules out solar, but it adds a couple of checks a newer suburban home skips. Older roofs may need a structural look or a re-roof before panels go on, and many older New Haven homes still run a 100-amp electrical service that may need an upgrade to carry a modern system, a battery, or EV charging. A flat roof, common on the city’s multifamily buildings, usually means a ballasted or tilted mounting system rather than a flush roof mount.
If your home is in a New Haven local historic district, such as Wooster Square, or is a listed historic property, adding solar is an exterior change that may need review and a certificate from the local historic district commission before you can pull a building permit. Reviews generally favor panels set back from the roof edge, kept low-profile, placed on rear or non-street-facing roof faces, and built with all-black modules to limit visual impact. Solar is frequently approved when designed this way, but the review adds time, so confirm your property’s historic status early and build a few extra weeks into the schedule.
A lot of New Haven homes are condos or sit in association-governed developments, and that used to be a roadblock. Under Connecticut Public Act 25-73, effective January 1, 2026, covered common interest communities, which include many condominium and homeowner associations, may not prohibit or unreasonably restrict a unit owner’s rooftop solar, subject to an approval process and reasonable conditions, which opens the door for more New Haven owners (Connecticut Public Act 25-73, as of 2026). Associations formed on or before January 1, 2026 can opt out, but must do so by January 1, 2028, and your bylaws, shared-roof rules, and local historic review can still apply, so confirm the current rule and your own documents before you plan a system.
| New Haven home factor | What to plan for |
|---|---|
| Older home (East Rock Victorian, Wooster Square, Westville cottage) | A structural check or re-roof before install; confirm remaining roof life |
| 100-amp service panel | A likely electrical service upgrade to carry solar plus a battery or EV charging |
| Local historic district or listed property | Possible historic-commission review before the building permit; set-back, low, all-black panels |
| Flat-roof or multifamily building (Fair Haven, City Point) | A ballasted or tilted mounting system; for two-to-four-unit homes, confirm who owns the roof and the meter setup |
| Condo or association-governed property | Your association bylaws plus the 2026 Connecticut solar-access rule; confirm both before you plan |
Paying for solar in New Haven: cash, loan, lease, or PPA
There is no single right way to pay for solar; the best fit depends on whether you want to own the system and keep the RRES payments yourself, or avoid an up-front cost. The table below compares the common paths. A Connecticut Green Bank Smart-E loan is a popular way to own the system with little up front, while a lease or PPA can mean no up-front cost but is a long-term agreement with monthly payments, not free solar, and the system owner, not you, holds the RRES contract. To weigh the long-run numbers, see whether solar panels are worth it.
| Path | Up-front cost | Who holds the RRES payments | Best when |
|---|---|---|---|
| Cash purchase | Full system cost | You, the owner | You want the fastest payback and the most lifetime savings |
| Smart-E or solar loan | Little to none, financed | You, the owner | You want ownership without paying cash up front |
| Lease or PPA | $0-up-front where eligible | The third-party owner | You prefer no up-front cost and a simpler, fixed monthly bill |
How to choose a solar installer in New Haven
Search “solar installers New Haven” and most of the first page is national directories and review sites rather than the companies themselves, so it pays to know how to screen a company directly. New Haven has an active market of licensed installers, from local Connecticut companies to national lease and PPA brands, which means real competition on price and service. Rather than chasing a “best installer” list, screen any company against objective criteria:
- NABCEP certification, the industry’s professional standard for PV installers.
- A valid Connecticut Home Improvement Contractor registration and a licensed electrician on the job.
- A clear workmanship and equipment warranty in writing.
- Real experience with United Illuminating interconnection, the RRES Buy-All and Netting choice, and New Haven historic or condo-association review if either applies to your home, so the paperwork and approvals go smoothly.
- A written production estimate and a transparent quote that models both RRES options at the current PURA and UI rates, not an old figure. For a checklist, see the right questions to ask a solar installer.
MySolarFY matches you with licensed installers that serve your area so you can compare real local quotes side by side, with no obligation.
Weighing your options across the area? Compare nearby solar markets with our local guides for Bridgeport, Danbury, and Waterbury.
Frequently asked questions
Is solar worth it in New Haven in 2026?
For most owner-occupied New Haven homes with decent sun, yes. Residential electricity in Connecticut averages about 30 cents per kWh (EIA, as of March 2026), among the highest in the country, so every kilowatt-hour your roof makes offsets a costly grid one. Connecticut pays you for that solar through the 20-year RRES tariff delivered by United Illuminating, and the state waives sales and property tax on the system. Savings depend on your roof, usage, which RRES option you pick, and how you pay, and they are not guaranteed, but Connecticut’s very high rates and the locked 20-year RRES rate make New Haven a strong solar market.
Is New Haven served by Eversource or United Illuminating?
New Haven is served by United Illuminating (UI), not Eversource. It is an easy thing to get wrong, because Eversource covers most of Connecticut, but UI serves New Haven and much of the south-central coast, and your rates, your interconnection paperwork, and your RRES enrollment all run through UI (United Illuminating RRES, as of 2026). The statewide RRES program is the same through either utility, but UI publishes its own 2026 Buy-All and Netting figures, so always check UI’s numbers rather than an Eversource page when you model your savings.
What is RRES and how is it different from net metering?
Connecticut replaced traditional retail net metering for new residential solar with the Residential Renewable Energy Solutions (RRES) tariff, run by PURA and delivered through United Illuminating in New Haven (Connecticut PURA RRES, as of 2026). Instead of a single net-metering credit, you choose between Buy-All, where the utility buys all your generation at a fixed rate, and Netting, where your solar offsets your own use first and only exports are credited. Whichever you choose, the rate is locked for 20 years from interconnection, and the choice is generally permanent, so compare both with your installer first.
Should I pick Buy-All or Netting on United Illuminating?
It depends on your home, and on a 2026 change. Buy-All pays a higher per-kWh rate, about 33 cents for 2026, but does not let you self-supply, so you keep buying all your electricity at retail while selling all your generation. Netting lets your solar offset your own usage first and credits only the excess you export, which often suits homes that use a lot of power during the day, but for 2026 enrollments a non-bypassable Solar Production Charge of about 4 cents per kWh now applies to Netting generation (United Illuminating Rider RRES, effective 2026, as of 2026). Because the choice is locked for 20 years, ask your installer to model both at the current UI and PURA rates before you decide.
What happened to the federal solar tax credit?
The 30% federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act, so a New Haven homeowner who buys solar in 2026 with cash or a loan cannot claim it (IRS, as of 2026). A separate commercial credit, Section 48E, can apply to leased and PPA systems, but the business that owns the system claims it, not the homeowner. Connecticut’s RRES program and its sales and property-tax exemptions were not affected, so the local payback case still holds at New Haven’s high electricity rates.
Can my condo or HOA stop me from installing solar in New Haven?
It is harder for them to than it used to be. Under Connecticut Public Act 25-73, effective January 1, 2026, covered common interest communities, including many condominium and homeowner associations, may not prohibit or unreasonably restrict a unit owner’s rooftop solar, subject to an approval process and reasonable conditions (Connecticut Public Act 25-73, as of 2026). Associations formed on or before January 1, 2026 can opt out, but must do so by January 1, 2028. Your bylaws, any shared-roof or common-element rules, and local historic-district review can still apply, so confirm the current rule and your own documents before you plan a system, especially in a multi-unit building where roof ownership is not always obvious.
Reviewed by the MySolarFY team. Figures were verified against the linked Connecticut (PURA, United Illuminating, Connecticut Green Bank, CT OLR, DSIRE), EIA, and IRS sources as of June 2026; the RRES Buy-All rate and the Netting Solar Production Charge are set in PURA’s docket and reset for each program year, and New Haven historic-review and condo-association rules vary, so confirm current terms with PURA, United Illuminating, and your local commission or association before you decide. MySolarFY does not provide tax or financial advice; consult a licensed professional about your own situation. Learn more about the MySolarFY team and how we work.
MySolarFY is a free service that matches homeowners with licensed solar installers. We are not an installer, financing company, or government program. “No up-front cost” refers to qualifying lease or PPA financing, where eligible homeowners may have no out-of-pocket cost at installation. Lease and PPA terms typically run 20 to 25 years, may include an annual price escalator, and total payments may exceed the cost of a cash purchase; on a lease or PPA the RRES payments go to the company that owns the system, not the homeowner. Homeowners do not get the federal residential credit that ended after December 31, 2025. Solar panels are not free and monthly payments apply. RRES rates are set by PURA and savings are not guaranteed. Eligibility, savings, incentives, and rates vary and are not guaranteed. See our full disclaimer.
