Connecticut Solar Incentives, Cost & Payback (2026)
Written by Aditya Patil · Last updated 2026-09-24
Is solar worth it in Connecticut in 2026? With electricity rates soaring past 24¢/kWh and the state providing robust residential solar programs, the math is incredibly strong. Understanding how to navigate the two tariff options is key.
$174
Avg. monthly bill
24.32¢/kWh
Avg. rate
$3.15 (est.)/W
Installed cost
Estimated
10 yrs
Est. payback (solar only)
typical household
Cost of solar in Connecticut
While verified 2026 localized median pricing isn't fully published yet for Connecticut, residential systems typically run around $3.15 (est.)/watt. For a standard Connecticut home using8,598 kWh per year, you would need an approximately 6.65 kW system.
That system size equates to roughly $20,945 gross upfront. Keep in mind that since the federal residential clean energy credit (§25D) expired at the end of 2025, your net cash or loan cost remains$20,945.
Solar only, no battery
~37% self-consumption. Excellent returns because CT's Netting Tariff heavily rewards exported energy.
$1,873 / yr
10-year payback · $63,863 over 25 years
Solar + battery
~60% self-consumption. Best for power outage backup and leveraging ESS program incentives.
$1,953 / yr
10-year payback · $66,573 over 25 years
Battery hardware cost isn't included in either estimate above — see our best solar battery guide for real installed battery prices to add to the solar+battery scenario.
Incentives & tax exemptions
| Program | Amount | Status |
|---|---|---|
| Energy Storage Solutions (ESS) | As of April 1, 2026, new residential participants receive a smaller enrollment (upfront) incentive of $30/kWh for standard installations, or $130/kWh for homes on 'grid edge' circuits (the top 10% of circuits by storm-outage frequency since July 1, 2012), plus 10 years of performance-based payments of $300-$550/kW-year for allowing utility-controlled 'Active Dispatch' of the battery, with higher rates for underserved and low-income customers. Participants who enrolled before April 1, 2026 remain under the earlier structure, which paid an upfront incentive of up to $250/kWh (up to $600/kWh for income-eligible households) plus a lower, optional 'Passive Dispatch' incentive. | open |
| Sales and Use Tax Exemption for Solar Energy Systems | 100% exemption from Connecticut's 6.35% sales and use tax on solar electricity-generating systems, passive and active solar heating systems, geothermal resource systems, and ice-storage cooling systems, including qualifying equipment (panels, mounting hardware, inverters, batteries used to store the system's electricity, collectors, pumps) and the labor to install them. Effective for sales on or after July 1, 2007. | open |
| Property Tax Exemption for Renewable Energy Systems | Exempts the added assessed value created by a qualifying Class I renewable energy system (including residential rooftop solar PV) from local property tax, so installing solar does not raise the property's tax bill. Separate provisions under Connecticut General Statutes 12-81(56), (57), (62), and (63) cover active solar heating/cooling systems, systems generating electricity for private residential or farm use, and larger commercial/industrial systems. | open |
Net metering / export rules
Connecticut replaced its older net metering structure with the Residential Renewable Energy Solutions (RRES)program, jointly run by Eversource and United Illuminating. When you flip the switch on your new system, you get to lock into one of two 20-year tariffs.
The Netting Tariff operates much like traditional net metering. You use your panels' energy directly in your home, and anything extra flows to the grid. For that exported energy, you receive bill credits valued near the retail electric rate (minus a small per-kWh Solar Energy Adjustment fee for new enrollees). The credits roll over each month and do not expire. Alternatively, the Buy-All Tariff means you sell 100% of your generated power to the utility at a locked rate, but you must buy all your home's electricity at standard retail prices.
| Policy | Residential Renewable Energy Solutions (RRES) |
| Options | Netting Tariff or Buy-All Tariff |
| Export value (Netting) | Retail rate minus ~$0.04/kWh adjustment |
| Term length | 20 years |
| Unused credits | Roll over monthly without expiring |
Netting Tariff exports are credited near the retail electric rate, but 2026 enrollees also pay a new per-kWh 'Solar Energy Adjustment' charge on their production, which secondary industry sources (not confirmed directly on PURA's own program page during this research) report PURA set at $0.0402/kWh for 2026, versus $0.005/kWh for customers grandfathered under earlier program years through 2039. The Buy-All Tariff is reported by the same secondary sources to pay a fixed $0.3289/kWh for 20 years for 2026 enrollees. Because PURA's own RRES program page does not itself publish these numeric rates (they are in the annual docket decision and program manual, which this research could not directly retrieve), treat the specific cents-per-kWh figures as medium-confidence and verify against the current RRES Program Manual or the relevant PURA Program Year docket before publishing them as exact figures.
Top utilities
| Utility | Residential rate | Customers |
|---|---|---|
| Connecticut Light & Power Co | 28.51¢/kWh | 924,132 |
| United Illuminating Co | 34.04¢/kWh | 256,302 |
| Constellation NewEnergy, Inc | 12.69¢/kWh | 125,376 |
Residential rate and customer counts are from EIA-861 (see Data sources below).
Batteries & VPP programs
Adding a battery to your solar project isn't strictly necessary for a fast return on investment in Connecticut (thanks to the lucrative Netting Tariff), but the Energy Storage Solutions (ESS) program makes it an attractive option.
Energy Storage Solutions (ESS)
Statewide battery storage program run by the Connecticut Green Bank, Eversource, and United Illuminating under PURA oversight (PURA Docket No. 25-08-05, Program Year 5 Decision, issued December 17, 2025). Since April 1, 2026, new participants enroll exclusively in 'Active Dispatch,' where the utility calls on the battery during grid events (up to roughly 10 winter events and 30-60 summer events per year) in exchange for a smaller upfront enrollment incentive plus 10 years of ongoing per-kW-year performance payments, replacing the earlier model of a larger upfront incentive with optional lower-value 'Passive Dispatch.' The program runs through at least 2030 with a 580 MW statewide storage deployment target.
Lease vs. buy in Connecticut
With the 0% federal credit in 2026 for homeowners, a solar lease or Power Purchase Agreement (PPA) can sometimes look more compelling. While homeowners no longer get a federal tax break for buying, leasing companies are classified as businesses and can still claim the §48E commercial clean energy credit. They often pass a portion of those savings down to you in the form of a lower monthly lease payment. See our lease vs. buy vs. PPA guide for more details.
Estimate your own numbers
The numbers above are for a household at Connecticut's average usage. Use the solar calculator with your own usage and any quote you've received.
FAQ
Does Connecticut have net metering?
Traditional net metering was replaced by the Residential Renewable Energy Solutions (RRES) program. You choose between two 20-year tariffs: a 'Netting Tariff' where you get bill credits for excess energy (valued slightly below retail rate due to a new 2026 fee), or a 'Buy-All Tariff' where you sell all your solar production to the utility at a fixed rate while paying regular retail rates for your home's usage.
Are there state tax credits for solar in CT?
While there is no state income tax credit, Connecticut offers two powerful tax exemptions: a 100% sales and use tax exemption for your solar system and installation, and a property tax exemption so your property taxes won't increase due to the added value of the solar panels.
What is the Energy Storage Solutions (ESS) program?
ESS is Connecticut's statewide battery program. For 2026, it offers an upfront enrollment incentive of $30/kWh (or $130/kWh for grid-edge circuits) plus 10 years of ongoing performance payments of $300-$550/kW-year in exchange for allowing the utility to control the battery during peak demand events (Active Dispatch).
Data sources
Last updated 2026-09-24
- U.S. Energy Information Administration — Electricity Data Browser — accessed 2026-09-24
- NREL PVWatts — accessed 2026-09-24
- NREL Solar Resource Data — accessed 2026-09-24
- LBNL Tracking the Sun (public data file, host-owned residential systems) — accessed 2026-09-24
Written by Aditya Patil