Connecticut solar incentives

Connecticut replaced legacy net metering with the Residential Renewable Energy Solutions program. Pair solar with the Energy Storage Solutions program or a Smart-E Loan to maximize savings.

Also see incentives in:Rhode Island·Massachusetts

Federal Residential Clean Energy Credit — what changed in 2026

Public Law 119-21 (July 4, 2025) amended 26 U.S.C. § 25D so the Residential Clean Energy Credit is not allowed for any expenditures made after December 31, 2025.

30% credit only for qualifying expenditures made on or before December 31, 2025
Not available for expenditures made after December 31, 2025
Commercial projects may still qualify for the 30% ITC (Section 48E)

Source: IRS — FAQs on Public Law 119-21 Energy Credits

Residential Renewable Energy Solutions (RRES)

PURA / Eversource / United Illuminating

RRES is a statewide program launched in January 2022 that provides renewable energy tariffs to compensate residential solar owners for power delivered to the grid. It replaced Connecticut's legacy net metering program and the Residential Solar Investment Program (RSIP).

Replaced legacy net metering and the RSIP rebate program
Six-year program administered by Eversource and UI
Tariffs established under Public Act 19-35 / CGS § 16-244z
Updated Buy-All and Netting tariff rates apply to 2026 enrollments

Source: CT PURA — Residential Renewable Energy Solutions Program

Energy Storage Solutions

PURA / Connecticut Green Bank / Eversource / UI

Energy Storage Solutions lowers the cost of home batteries with upfront and performance incentives. The program is overseen by PURA, paid for by electric ratepayers, and administered by the Connecticut Green Bank, Eversource, and UI.

Upfront and performance-based battery incentives
Overseen by PURA and paid for by electric ratepayers
Administered by CT Green Bank, Eversource, and UI
Smart-E Loan financing is available

Source: CT Green Bank — Energy Storage Solutions

Solar for All — Project SunBridge

CT DEEP / U.S. EPA

Connecticut received a $62.45 million Solar for All grant from the EPA to expand solar and storage access for low-income and disadvantaged communities. Project SunBridge builds on RRES and Energy Storage Solutions.

$62.45 million Inflation Reduction Act grant
Priority focus on multifamily affordable housing
Builds on existing RRES and Energy Storage Solutions programs
Aims for at least 20% household energy savings for participants

Source: CT DEEP — Solar for All / Project SunBridge

Residential Solar Investment Program (RSIP) — closed

Connecticut Green Bank

RSIP provided rebates to more than 46,300 households from 2012 until it reached its 378 MW target, surpassing the 350 MW statutory goal one year ahead of the December 2022 deadline. It has been replaced by RRES.

Reached 378 MW, exceeding the 350 MW statutory target
Closed ahead of the December 2022 deadline
Replaced by the Residential Renewable Energy Solutions program

Source: CT Green Bank — Residential Solar Investment Program

Smart-E Loans & residential solar options

Connecticut Green Bank

Low-cost Smart-E Loans can finance rooftop solar and necessary roof replacement. Homeowners may also qualify for RRES tariffs through their utility.

Smart-E Loan financing for solar and roof replacement
RRES, launched by PURA in 2022, is the current residential incentive program

Source: CT Green Bank — Residential Solar Options

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