National Grid Massachusetts Rates, Bills and Service Area

National Grid Massachusetts reported 438,150 residential customers on bundled service in 2025, using 487 kWh a month on average at 33.66 cents per kWh. Bundled means the utility supplies the energy and delivers it, so the price covers both. Among the 15 Massachusetts utilities with at least 10,000 bundled residential customers, National Grid Massachusetts ranks 15 from the lowest price.

Another 793,715 residential customers use National Grid Massachusetts for delivery only and buy their energy from a different supplier. EIA reports their delivery revenue at about 18.73 cents per kWh, or $109.28 a month, which does not include the supply price.

Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data), sales to ultimate customers. Price is revenue divided by sales and includes fixed charges.

EIA lists the counties where National Grid Massachusetts has distribution equipment. That covers 12 counties in Massachusetts. A county can be served by more than one utility, so confirm your address with the utility or your bill.

Not sure who serves your address? Use find my electric company.

For 2025, National Grid Massachusetts reported an average of 91 minutes without power per customer and 0.84 interruptions per customer, with major event days left out. The typical interruption lasted about 109 minutes. For comparison, the median state averaged 127 minutes of outage per customer.

National Grid Massachusetts had about 36 fewer minutes of outage per customer than the median state. The Massachusetts figure across its utilities was 76 minutes. One interruption lasting 109 minutes and 0.84 interruptions a year per customer add up to the 91 minute total.

Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data), reliability schedule, measured under IEEE 1366. Utilities define events slightly differently, so compare with care.

• Time-of-use pricing. National Grid Massachusetts does not report a residential time-of-use program in its 2025 EIA filing. Ask the utility, because programs change. How time-of-use rates work.
• Rooftop solar and net metering. EIA shows 114,502 residential net-metered systems on the National Grid Massachusetts grid in 2025, with 763.2 megawatts of capacity. How net metering works.

A private company owned by shareholders. A state commission reviews its costs and sets or approves its rates in formal rate cases. In Massachusetts, that review is done by the Massachusetts Department of Public Utilities.

National Grid Massachusetts is an investor-owned utility based in Massachusetts.

National Grid Massachusetts operates in the ISONE power market. Power markets set wholesale costs, but your retail rate is set by the rules described above.

By residential customers, National Grid Massachusetts ranks 2nd of the 20 utilities that report homes in Massachusetts, with about 42.2% of the state's homes. National Grid Massachusetts lists distribution equipment in 12 counties, so check your county and your bill before you assume it serves you. 114,502 of its residential customers use net metering, or 93.0 per 1,000 homes, against 74.4 for Massachusetts as a whole.

Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data). Peers are other utilities of the same type in Massachusetts with at least 1,000 residential customers and a reported price.

See every one on the electric companies in Massachusetts page.

Kilowatt Atlas is not National Grid Massachusetts and does not take payments, start service or manage accounts. To pay a bill, report an outage or start service, use the website, app or phone number printed on your bill. Be careful with search ads and lookalike sites that offer to pay your bill for a fee.

• Want to understand a line on your bill? Read how to read your electric bill.
• Think your bill is high? Try the bill checker.
• Massachusetts allows retail choice in part or all of the state. See the provider guide.