HomeWattCost

Eversource (Greater Boston) rates

Eversource has one residential plan modelled here. A typical Massachusetts home using 598 kWh a month pays about $225 a month.

Investor-owned 1,303,076 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceR-1 (A1)

01234567890123456789.0123456789¢/kWh
R-1 (A1)$225/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
R-1 (A1)
Residential R-1		 Flat $10.00 36.0¢ all hours 36.0¢ all hours None

Charging an EV on Eversource

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-1 (A1)Any$99/mo$99/mo$324/mo

With an EV charged at its best hour, the cheapest plan overall is R-1 (A1). Compare plans on your own usage.

How Eversource’s plans work

R-1 (A1) (Residential R-1). One price per kWh at every hour, all year: 36.0¢. 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, Eversource billed its residential customers an average of 29.91¢ 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 (A1)
Transcribed from the utility’s tariff		 September 1, 2026 Same pricing all year Net Metering Checked September 28, 2026
Eversource, 2026 Summary of Eastern Massachusetts Electric Rates for Greater Boston Service Area, rates effective September 1, 2026 · Mass. DOER, Basic Service Rates spreadsheet (7.2.2026), NStar - Eversource tab, residential fixed price

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 Eversource

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