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Solar incentives · Connecticut · 2026
Solar rebates in Connecticut.
The federal, state, and utility solar incentives available in Connecticut for 2026, then matched to a vetted local installer.
Programs · Connecticut
8
active programs & rules in 2026
RRES Netting or Buy-All tariff (no retail net metering) · verified 2026-09-01
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The full list
8 programs available right now in Connecticut.
Tax credit
#01
Federal Residential Clean Energy Credit (Section 25D) - ENDED
The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025. Cash and loan purchases made now receive no federal tax credit. A Connecticut quote that still applies it is overstating your return by roughly a third.
Source ↗ Tax credit
#02
Federal Commercial ITC (Section 48E) - via Lease / PPA
Section 48E, the commercial Clean Electricity Investment Credit, survives at 30 percent and is available to third-party owners of residential systems under leases and power purchase agreements. The provider claims it and may reflect part of the value in the rate offered. Ask what they claim and what actually reaches you, and confirm with a tax advisor.
Source ↗ Utility
#03
Residential Renewable Energy Solutions (RRES) - Netting or Buy-All
Connecticut closed retail net metering to new residential customers at the end of 2021. RRES replaced it: a 20-year contract with Eversource or United Illuminating on one of two tariffs. Under Netting your solar serves the home first and excess earns bill credits at the retail rate. Under Buy-All the utility purchases your entire output at a fixed tariff rate and you buy all your household electricity back at the retail rate. The choice is locked for the full 20 years, so it deserves more attention than it usually gets.
Program
#04
Solar Energy Adjustment (non-bypassable charge) - INCREASED for 2026
For rates offered on and after January 1, 2026, Connecticut law required PURA to establish a non-bypassable charge of at least 3.25 cents per kWh as part of the RRES Netting tariff. PURA set the 2026 figure at $0.0402 per kWh, against $0.005 for earlier enrollees. It is charged on total generation, not only on exported energy, so it reduces the value of electricity you consume yourself as well as electricity you export. Existing customers are reported to keep the $0.005 rate. Confirm the current year figure with your utility before you sign, since it is reset annually.
Utility
#05
Energy Storage Solutions (ESS) - RESTRUCTURED April 1, 2026
The statewide battery programme for Eversource and United Illuminating customers was restructured by PURA in Docket 25-08-05, effective April 1, 2026, from a large upfront payment to a small enrollment incentive plus performance pay. Enrollment is $30 per kWh for most customers, against $250 per kWh under the previous design, with a Grid Edge adder of $130 per kW on constrained circuits. Performance pay runs for a 10-year term at $300 per average kW discharged during peak events, rising to $450 for underserved communities and $550 for income-eligible customers, split across summer (June to September) and winter (November to March) event periods.
Source ↗ Utility
#06
RRES Income-Eligible Adder
Effective January 1, 2026, qualified projects serving customers of record with incomes at or below 60 percent of State Median Income receive an additional $0.035 per net kWh on Netting projects and $0.055 per kWh on Buy-All projects. It is not applied automatically, so ask whether your household qualifies and ask to see the answer rather than being told it was checked.
Tax credit
#07
Sales and Use Tax Exemption (CGS Sec. 12-412)
Solar energy systems and their components are exempt from the Connecticut sales and use tax of 6.35 percent. Nothing is claimed and nothing is filed: the exemption should simply be absent from your quoted price. On a typical residential system that is well over a thousand dollars, so it is worth confirming a quote reflects it rather than assuming.
Tax credit
#08
Property Tax Exemption (CGS Sec. 12-81)
Connecticut exempts the value a residential solar energy system adds to a property from local property tax under CGS Section 12-81. Unlike the sales tax exemption this one is not always automatic: some municipalities require the homeowner to file an exemption application with the local assessor. Ask your own assessor what filing, if any, your town requires and by what date, because a missed filing is the common way this exemption is lost.
Net metering · Connecticut
RRES Netting or Buy-All tariff (no retail net metering)
Connecticut closed retail net metering to new residential customers at the end of 2021. New projects sign a 20-year Residential Renewable Energy Solutions contract with Eversource or United Illuminating and choose one of two tariffs at the outset. Under the Netting tariff the system serves the home first and excess generation earns bill credits at the retail rate, which is the closer analogue to old net metering. Under the Buy-All tariff the utility purchases the entire output of the system at a fixed tariff rate for the full 20 years, and the household separately buys all the electricity it uses at the ordinary retail rate, which trades upside for predictability. The tariff choice cannot be changed afterwards. From January 1, 2026 Netting enrollees also pay the Solar Energy Adjustment, a non-bypassable charge PURA set at $0.0402 per kWh for 2026 against $0.005 for earlier enrollees, levied on total generation rather than only on exports. Because that charge applies to every kilowatt hour the system produces, it reduces the value of self-consumption as well as of export, and it should be visible as its own line in any savings model rather than buried in a net figure.
Worth checking before you sign:
taking a rebate can change your net-metering terms, and export credit rules
differ by utility. Your matched installer confirms the exact numbers for
your address.
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