HomeWattCost

National Grid (Massachusetts Electric) rates

National Grid has one residential plan modelled here. A typical Massachusetts home using 598 kWh a month pays about $246 a month.

Investor-owned 1,210,113 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceR-1

01234567890123456789.0123456789¢/kWh
R-1$246/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
R-1
Residential R-1		 Flat $10.00 39.5¢ all hours 39.5¢ all hours None

Charging an EV on National Grid

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Massachusetts home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
R-1Any$109/mo$109/mo$355/mo

With an EV charged at its best hour, the cheapest plan overall is R-1. Compare plans on your own usage.

How National Grid’s plans work

R-1 (Residential R-1). One price per kWh at every hour, all year: 39.5¢. Shifting use to other hours changes nothing on this plan; using less is the only lever. Fixed charge: $10.00 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, National Grid billed its residential customers an average of 33.60¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Massachusetts’s price change since.

Sources for each plan

PlanEffectiveSeasonsSolar exportsSource and status
R-1
Transcribed from the utility’s tariff		 August 1, 2026 Same pricing all year Net Metering Checked September 28, 2026
Massachusetts Electric, Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-H, effective Aug 1, 2026 · Massachusetts Electric, Summary of Basic Service Rates (Sheet 5 of 5), effective Aug 1, 2026

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Run the numbers on National Grid

EV charging cost Which plan is cheaper Best time to run things Appliance cost Solar payback Heat pump vs gas