City of South Norwalk - (CT)
Municipal electric utility · Connecticut · #1,296 of 3,199 U.S. utilities by customers · EIA utility #17569
City of South Norwalk - (CT) is a municipal electric utility serving 7,439 customers in Connecticut. In 2025 it sold 101 gigawatt-hours of electricity for $19.08M in revenue, an average realized rate of 18.82¢ per kWh across all customer classes and — per kWh for residential customers. Its reported service territory covers 1 counties.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Total | 7,439 | 101 | $19.08M | 18.82¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (— kWh/month).
This utility files the EIA-861S short form, which reports totals only - no breakdown by customer class is published for it.
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 7,232 | 95.3 | $16.24M | — |
| 2022 | 7,193 | 102 | $16.92M | — |
| 2023 | 7,379 | 99.1 | $18.95M | — |
| 2024 | 7,428 | 99.3 | $18.65M | — |
| 2025 | 7,439 | 101 | $19.08M | — |
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 7,439 meters
Counties served
Fairfield, CT
Other large utilities in Connecticut
- Connecticut Light & Power Co - 1,072,114 customers, residential 28.88¢
- United Illuminating Co - 277,914 customers, residential 35.40¢
- Think Energy, LLC - 90,425 customers, residential 11.78¢
- Town Square Energy - 85,979 customers, residential 13.09¢
- Town of Wallingford - (CT) - 25,123 customers, residential 17.78¢
- City of Norwich - (CT) - 20,996 customers, residential 23.35¢
- Groton Dept of Utilities - (CT) - 14,193 customers, residential 18.05¢
- XOOM Energy Connecticut, LLC - 10,627 customers, residential 13.09¢
All Connecticut utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #17569 in the EIA frame.