National Grid electric rates in Massachusetts and New York

Two utilities, two state commissions

When people search for National Grid's electric rates, they mean one of two companies. In Massachusetts the utility is legally Massachusetts Electric Company, with 1,231,865 residential customers on its wires in 2025. In upstate New York it is Niagara Mohawk Power Corporation, with 1,536,569. Together that is 2.8 million homes. Each utility's rates are set by its own state regulator, it connects to a different regional grid (ISO New England and NYISO¹), and EIA reports them separately. National Grid no longer owns an electric utility in Rhode Island: PPL Corporation completed its purchase of The Narragansett Electric Company from National Grid on May 25, 2022, and it now operates as Rhode Island Energy.

National Grid (NY)19.89¢

National Grid (MA)33.66¢

Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.

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Utility	average residential price (bundled customers)
National Grid (NY)	19.89¢
National Grid (MA)	33.66¢

Across the two utilities, full-service residential customers paid 22.42¢ per kWh¹ on average in 2025. That is average revenue per kWh: everything those customers were billed (customer charge, delivery, supply and adjustments) divided by the kWh they used. It is not a rate printed on any bill.

The averages by period

The headline gap depends on which period you pick, so here are the three periods EIA reports for each utility's full-service homes:

Within its own state, each utility sits at a different end. In Massachusetts, National Grid's 2025 average was the highest of the 15 utilities with 10,000 or more full-service residential customers, 10.7% above the Massachusetts average. In New York it was the 4th lowest of 10, 24.6% below the New York average, a state average pulled up by Con Edison at 36.74¢ per kWh. Among the large US utilities with 100,000 or more residential customers, the Massachusetts utility ranked 6th highest of 177 and the New York one 36th highest of 177¹.

Upstate prices rose, Massachusetts held steady

From 2024 to 2025, the full-service average at National Grid in New York went from 17.22¢ per kWh to 19.89¢ per kWh, up 15.5%. The New York state average rose 8.0%⁵ over the same years. At National Grid in Massachusetts the average barely moved: 33.60¢ per kWh⁴ in 2024, 33.66¢ per kWh¹ in 2025.

The monthly survey shows the same split continuing into 2026. The New York utility's 12-month average to August 2026, 23.24¢ per kWh, was well above its 2025 figure, and its August 2026 reading was +22.2% on the same month a year earlier. In Massachusetts the 12-month figure, 33.86¢ per kWh, was close to the 2025 one, and August 2026³ came in −9.4%² on August 2025. Single months move with supply contracts and billing cycles, and the 2026 months are preliminary, so the 12-month averages are the steadier guide. The gap between the two utilities is still wide, but over the last 12 months it was narrower than in calendar 2025.

Rate changes for each utility are decided in public proceedings: in New York by the Public Service Commission, in Massachusetts by the Department of Public Utilities. The guide to rate increases explains how those decisions reach a bill.

Who the full-service price covers

The two averages above describe very different shares of each utility's customers. Both states let homes buy their electricity supply from a competitive supplier, and in Massachusetts also from a town aggregation, while National Grid keeps delivering it.

• In Massachusetts, 64.4% of the residential customers on National Grid's wires bought supply elsewhere in 2025. The full-service average of 33.66¢ per kWh therefore covers only the 438,150 homes on National Grid's Basic Service supply.
• In New York, only 5.7% did, so the 19.89¢ per kWh average, which covers its 1,449,428¹ full-service homes, describes the large majority of homes on its wires.

For homes that buy supply elsewhere, EIA reports only what National Grid billed for delivery. Those delivery-only averages were 18.73¢ per kWh in Massachusetts (+14.9% on 2024) and 10.37¢ per kWh in New York (+4.3%¹). They cover delivery alone; the supplier's own charge comes on top and is not in EIA's utility data. They cannot be set against the full-service averages, which include supply and cover a different group of homes.

National Grid (MA)18.73¢

National Grid (NY)10.37¢

Source: EIA-861 annual electric power industry report, 2025 final. Delivery charges only: what the utility billed customers who buy supply elsewhere, divided by their kWh. Not comparable with bundled prices.

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Utility	delivery-only revenue per kWh (residential)
National Grid (MA)	18.73¢
National Grid (NY)	10.37¢

The retail-choice guides for Massachusetts and New York explain how supply is bought in each state.

Higher price, smaller bill in Massachusetts

A higher price per kWh did not mean a higher bill. In 2025 the average full-service home used 487 kWh a month in Massachusetts and paid $163.79, while the average upstate New York home used 652 kWh and paid $129.73. The New York bill had averaged $109.74⁴ in 2024, so it changed by +18.2%; the Massachusetts bill changed by −1.0%¹.

National Grid (MA)487

National Grid (NY)652

Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.

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Utility	average monthly residential use
National Grid (MA)	487
National Grid (NY)	652

Over the 12 months September 2025 to August 2026, use peaked in January 2026 in Massachusetts, when the average bill reached $213.63 for 636 kWh, and in January 2026 in New York, at $223.41 for 827 kWh; New York's largest bill came in February 2026, at $239.12, on less electricity than in the peak-use month. The smallest monthly bills were $122.02 in Massachusetts (May 2026) and $101.32 in New York (May 2026). Over the full 12 months the bills averaged $167.49 and $149.92². A household budgeting for the year should plan around its utility's peak month, not the annual average.

Outages, smart meters and rooftop solar

Upstate customers spent more time without power. Including major storms, National Grid's New York customers averaged 242 minutes of outages in 2025, more than the New York average of 116 minutes, and 140 minutes excluding major event days. In Massachusetts the figures were 133 minutes, more than the Massachusetts average of 122 minutes, and 91 minutes⁶ without major events. Both utilities report under IEEE 1366.

The New York utility had moved further on advanced meters: 63.0% of its residential meters in 2025, against 29.2% in Massachusetts. Rooftop solar ran the other way. Massachusetts customers had 114,502 net-metered residential installations, 93.0 per 1,000 customers, against 27,577 in New York, 17.9⁷ per 1,000.

Each utility page adds its counties, its business prices and its comparison with the other utilities in its state.