Town of Groton - (MA)
Municipal electric utility · Massachusetts · #1,551 of 3,199 U.S. utilities by customers · EIA utility #7715
Town of Groton - (MA) is a municipal electric utility serving 5,010 customers in Massachusetts. In 2025 it sold 74.4 gigawatt-hours of electricity for $13.31M in revenue, an average realized rate of 17.89¢ 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 | 5,010 | 74.4 | $13.31M | 17.89¢ |
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 | 4,867 | 71.8 | $10.64M | — |
| 2022 | 4,918 | 72.5 | $12.64M | — |
| 2023 | 4,939 | 70.3 | $12.38M | — |
| 2024 | 4,979 | 72.9 | $12.89M | — |
| 2025 | 5,010 | 74.4 | $13.31M | — |
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 5,153 meters
Counties served
Middlesex, MA
Other large utilities in Massachusetts
- Constellation NewEnergy, Inc - 1,541,139 customers, residential 12.92¢
- Direct Energy Services - 1,310,067 customers, residential 14.56¢
- Massachusetts Electric Co - 486,042 customers, residential 33.66¢
- First Point Power, LLC - 353,137 customers, residential 13.82¢
- NSTAR Electric Company - 340,640 customers, residential 21.49¢
- Clearview Electric Inc. - 64,976 customers, residential 14.61¢
- City of Taunton - (MA) - 40,045 customers, residential 18.81¢
- Town of Reading - (MA) - 28,337 customers, residential 19.95¢
All Massachusetts utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #7715 in the EIA frame.