Electricity rates in 02557 — Oak Bluffs, MA
Homes in ZIP 02557 pay about 19.4¢ per kWh (NSTAR Electric Company, Jan–Aug 2026). The Massachusetts average is 30.5¢ and the U.S. average 18.2¢ (Aug 2026).
What a month of electricity costs
Monthly cost at the average price of 19.4¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 02557 is
Outlined: ZIP code area · scroll or pinch to zoomUtilities serving Dukes County
| Utility | Home price | Avg. bill | Customers in MA |
|---|---|---|---|
| NSTAR Electric Company Investor Owned · serves Dukes County | 19.4¢ Jan–Aug 2026 | $137 | 1,303,076 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for Dukes County; county matches may serve only part of the area. Prices are each utility’s average residential revenue per kWh.
Massachusetts price trend
Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the New England region, which includes Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont.
Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.
Questions about 02557
How much does electricity cost in 02557?
About 19.4¢ per kWh for homes (NSTAR Electric Company, Jan–Aug 2026, EIA). At 900 kWh a month that is roughly $175.
Who is the electric utility for 02557?
NSTAR Electric Company serves Dukes County (EIA service territory), with about 1,303,076 residential customers in Massachusetts.
Is electricity in MA getting more expensive?
The Massachusetts residential average was 30.5¢ per kWh in August 2026, down 0.2% from a year earlier; the U.S. average was 18.2¢.
Can I choose my electricity supplier in MA?
Massachusetts allows retail electricity choice for many households; the local utility still delivers the power.