Nantucket Electric Co
Investor Owned electric utility · Massachusetts · #1,981 of 3,199 U.S. utilities by customers · EIA utility #13206
Nantucket Electric Co is a investor owned electric utility serving 2,496 customers in Massachusetts. In 2025 it sold 25.1 gigawatt-hours of electricity for $8.79M in revenue, an average realized rate of 35.01¢ per kWh across all customer classes and 35.91¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 2,215 | 21.9 | $7.85M | 35.91¢ | |
| Commercial | 280 | 3.2 | $935.60K | 28.94¢ | |
| Industrial | 1 | 0.0 | $6.40K | 32.00¢ | |
| Total | 2,496 | 25.1 | $8.79M | 35.01¢ |
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 (822 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 2,077 | 21.6 | $5.32M | 25.46¢ |
| 2022 | 2,296 | 22.0 | $6.41M | 29.62¢ |
| 2023 | 2,218 | 20.3 | $7.51M | 37.41¢ |
| 2024 | 2,306 | 22.4 | $7.73M | 35.11¢ |
| 2025 | 2,496 | 25.1 | $8.79M | 35.91¢ |
Reliability (2025)
Average outage time (SAIDI): 103 minutes per customer per year
Average outages (SAIFI): 0.97 per customer
Average restoration time (CAIDI): 106 minutes
As reported for Massachusetts under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 27.7 GWh
Winter peak demand: 37 MW
Energy losses: 8.5% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 26.4% of 15,409 meters
Customer-sited generation (net metering): 358 installations, 5.1 MW of capacity
This utility also reported 12,197 delivery-only customers (167 GWh delivered) in 2025. Delivery figures are excluded from the totals above because the same electricity is also reported by the energy supplier - see Methodology.
Counties served
Nantucket, 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 #13206 in the EIA frame.