Groton Dept of Utilities and solar
Groton Dept of Utilities is a municipal utility serving about 12,596 homes in Connecticut. Here's what its rates and export rules mean for solar: for a typical customer, solar is worth it.
- Average price (2026 est.)
- 17.2¢38% below Connecticut average
- Typical bill
- $128740 kWh a month
- Exports credited
- RetailFull retail net metering
- Typical payback
- 13.4 yrs6.9 kW, cash
Export rules for Groton Dept of Utilities customers
Full retail net metering (Connecticut rule).
Connecticut replaced traditional net metering in 2022 with the Residential Renewable Energy Solutions (RRES) program. Homeowners choose either a 'netting' option (monthly net metering at retail with an added payment for renewable energy credits) or a 'buy-all' option (all production sold to the utility at a fixed 20-year rate). A 2026 law extended the program through 2035.
Solar for a typical Groton Dept of Utilities home
| System | 6.9 kW (100% of 740 kWh/month) |
|---|---|
| Cost | $21,440 |
| First-year savings | $1,465 |
| Payback | 13.4 years |
| 25-year net | $27,273 |
Uses the utility's average price.
Solar adoption
- Homes with solar (2025)
- 822
- Share of customers
- 6.5%
- Residential solar capacity
- 4 MW
- Residential customers
- 12,596
EIA-861, 2025.
Questions about Groton Dept of Utilities and solar
Does Groton Dept of Utilities have net metering?
Groton Dept of Utilities follows Connecticut's rules: Connecticut replaced traditional net metering in 2022 with the Residential Renewable Energy Solutions (RRES) program. Homeowners choose either a 'netting' option (monthly net metering at retail with an added payment for renewable energy credits) or a 'buy-all' option (all production sold to the utility at a fixed 20-year rate). A 2026 law extended the program through 2035.
How much does electricity cost with Groton Dept of Utilities?
Residential customers paid an average of 18.1¢ per kWh in 2025 (EIA), about 17.2¢ adjusted to 2026. The typical home uses 740 kWh a month, a bill of about $128.
Is solar worth it with Groton Dept of Utilities?
For a typical customer, solar is worth it: a 6.9 kW system costing about $21,440 pays back in about 13.4 years, with $27,273 net over 25 years.
How many Groton Dept of Utilities customers have solar?
About 822 homes had net-metered solar at the end of 2025, roughly 6.5% of residential customers (EIA-861).
Legal name: Groton Dept of Utilities - (CT) (EIA ID 7716). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026.