How much does a home battery cost in Connecticut after rebates?
The most common job, a tesla Powerwall 3 (13.5 kWh), installed, costs $14,500 before rebates. Most jobs cost between $11,500 and $18,500.
How much does a home battery cost?
| Project | Low | Typical | High |
|---|---|---|---|
| Tesla Powerwall 3 (13.5 kWh), installed | $11,500 | $14,500 | $18,500 |
| Enphase IQ Battery 10C (10 kWh), installed | $10,500 | $13,000 | $16,000 |
| Home battery, generic installed cost per kWh | $900 | $1,100 | $1,600 |
What the typical price covers: one Powerwall 3 (13.5 kWh, integrated hybrid inverter), Backup Gateway/backup switch, wiring, mounting, permit, interconnection paperwork, commissioning. Expansion units extra (~$6,000 each). Excludes main-panel or service upgrade (+$3,000-$5,000 where needed) and solar.
Is there a rebate for a home battery in Connecticut?
Yes. We track 1 home battery program taking applications in Connecticut.
Which utilities pay home battery rebates?
Most rebates depend on who supplies your power or gas.
| Utility | Programs | Largest rebate |
|---|---|---|
| Eversource (CT) | 1 | Varies |
| United Illuminating (UI) | 1 | Varies |
How much will I pay after rebates?
Without an open rebate, plan on the full price: about $14,500 for a typical job.
Use the rebate calculator to see what applies at your zip code.
Is there a federal tax credit?
No. The federal credits for heat pumps and batteries (25C and 25D) ended for installs after December 31, 2025.
How do I find a licensed installer in Connecticut?
We list 4,883 Connecticut contractors whose state license covers home battery work. Each one shows its license, and many show a phone number or website.
- Home battery in Bridgeport
- Home battery in Stamford
- Home battery in New Haven
- Home battery in Hartford
- Home battery in Waterbury
- Home battery in Norwalk
- Home battery in Danbury
- Home battery in New Britain
Sources
- EnergySage - Tesla Powerwall 3 review (typical installed ~ $13,473, ~ $998/kWh) (2026)
- EnergySage - 2026 cost of energy storage in New Jersey ($1,074/kWh; 13 kWh avg $13,963, range $11,869-$16,057) (2026)
- EnergySage - Enphase IQ Battery 10C review (installer example ~ $13,000, ~ $1,300/kWh) (2025)
- NuWatt Energy - Enphase IQ Battery 10C ($12,000-$14,500 installed) (2026)
- EnergySage - 2026 cost of energy storage in New Jersey ($1,074/kWh statewide; $918-$1,590/kWh by town) (2026)
- EnergySage - 2026 cost of energy storage in Connecticut ($1,167/kWh) (2026)
- Programs: official program pages, checked 2026-10-10. Installers: Connecticut state license records.