Skip to content
ClaimWatt Find my rebates
Performance payment · Eversource / United Illuminating · Connecticut

Connecticut Energy Storage Solutions

$200/kWh upfront + $115/kW performance

Connecticut Energy Storage Solutions is the joint Eversource / United Illuminating program for residential battery storage. The program pays $200 per kWh upfront plus an annual $115 per kW performance payment for grid services. A typical Tesla Powerwall 3 (13.5 kWh, 5 kW) qualifies for $2,700 upfront ($200 × 13.5) plus $575/year ongoing ($115 × 5) for the multi-year contract term. The combined value over 5 years approaches $5,500 — among the strongest residential battery programs in the US. Connecticut's grid is small and capacity-constrained, making distributed battery storage particularly valuable.

Eligibility

Who qualifies?

Connecticut residential customers of Eversource or United Illuminating.

Battery requirements?

Approved battery list including Tesla Powerwall, Generac PWRcell, Sonnen, FranklinWH, others.

Contract term?

5-year minimum enrollment for performance payments.

How to apply for CT Energy Storage

  1. Choose participating installer

    List at energystoragect.com.

  2. Apply for program

    Application includes battery specs and dispatch authorization.

  3. Install and commission

    Standard install. Utility commissioning.

  4. $200/kWh paid upfront

    Upfront payment after commissioning.

  5. Annual $115/kW performance payment

    Paid for grid services dispatched during peak events.

Stacking with other programs

Stacks with federal 25D, Connecticut residential solar net metering, and CT solar tax credit. Connecticut's small grid + capacity constraints + battery program structure delivers some of the strongest battery economics in New England.

Frequently asked questions

Stack with federal 25D? +
Yes. Upfront $200/kWh reduces basis; performance payment is revenue. Federal 30% applies on net cost.
How does CT compare to MA ConnectedSolutions? +
CT pays more upfront ($200/kWh vs no upfront in MA). MA pays more in summer event compensation. Both deliver $4,000–$6,000 over 5 years for a Powerwall.

Official program page: https://energystoragect.com/

Related programs and credits

Find local installers