United Illuminating and solar
United Illuminating is an investor-owned utility serving about 314,909 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.)
- 33.0¢18% above Connecticut average
- Typical bill
- $187567 kWh a month
- Exports credited
- RetailFull retail net metering
- Typical payback
- 7.7 yrs5.3 kW, cash
Export rules for United Illuminating customers
Full retail net metering, monthly netting.
Same RRES structure as Eversource.
Solar for a typical United Illuminating home
| System | 5.3 kW (101% of 567 kWh/month) |
|---|---|
| Cost | $17,280 |
| First-year savings | $2,141 |
| Payback | 7.7 years |
| 25-year net | $58,524 |
Uses the utility's average price.
Solar adoption
- Homes with solar (2025)
- 27,647
- Share of customers
- 8.8%
- Residential solar capacity
- 154 MW
- Residential customers
- 314,909
EIA-861, 2025.
Cities served
Questions about United Illuminating and solar
Does United Illuminating have net metering?
Same RRES structure as Eversource.
How much does electricity cost with United Illuminating?
Residential customers paid an average of 34.6¢ per kWh in 2025 (EIA), about 33.0¢ adjusted to 2026. The typical home uses 567 kWh a month, a bill of about $187.
Is solar worth it with United Illuminating?
For a typical customer, solar is worth it: a 5.3 kW system costing about $17,280 pays back in about 7.7 years, with $58,524 net over 25 years.
How many United Illuminating customers have solar?
About 27,647 homes had net-metered solar at the end of 2025, roughly 8.8% of residential customers (EIA-861).
Legal name: United Illuminating Co (EIA ID 19497). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026.