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National Grid MA Solar Cost & Rate Context in Massachusetts

Estimate production and installed cost in National Grid Massachusetts electric territory while keeping unverified solar export compensation out of the result.

Federal residential solar credit in 2026: $0. The utility export program is verified, but exact export value remains guarded until customer-specific billing inputs are known.
Planning solar yield1,310 kWh/kW
Installed-cost benchmark$3.00/W
Massachusetts Net Metering Provisionfacility-class credit
Featured utility rate context39.51¢/kWh
verified utility boundary

Build your National Grid MA solar scenario

National Grid Massachusetts electric territory The export program is verified, but exact savings require customer-specific billing inputs.

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Exact National Grid Massachusetts export value requires facility classification and the applicable standard or market credit calculation. CalcuRiver shows the verified policy boundary instead of flattening it into a retail-rate assumption.

methodology & sources

What is modeled — and what is not

Production

1,310 kWh/kW-year state planning benchmark from the existing PVWatts-based CalcuRiver dataset.

Installed cost

$3.00/W planning benchmark for Massachusetts.

Electricity value ceiling

30.49¢/kWh · EIA residential benchmark for Massachusetts (2026-07).

National Grid MA rate context

39.51¢/kWh · R-1 default service · Massachusetts Electric. This is utility rate-plan context, not a verified solar export-compensation rate.

Utility source: Current official utility/regulator rate source · verified 2026-09-28.

Production: NREL PVWatts methodology · Cost: 2026 state / local marketplace benchmark.

Solar export source: National Grid M.D.P.U. No. 1625 Net Metering Provision · National Grid Massachusetts solar incentives and programs · verified 2026-10-03.

verified billing boundary

Why exact National Grid Massachusetts solar savings still require customer-specific billing inputs

Exact National Grid Massachusetts export value requires facility classification and the applicable standard or market credit calculation. CalcuRiver shows the verified policy boundary instead of flattening it into a retail-rate assumption.

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why this estimate changes

Why this solar estimate changes

Solar value is driven by local production, installed cost, the retail value of electricity you avoid buying, and the compensation you receive for exported energy. CalcuRiver does not assume export credits equal the retail rate unless that utility program is explicitly verified.

Core logic: self-used solar offsets retail purchases; exported solar is valued only under a verified export-compensation rule.

Methodology & source policy
local cost context

Connect solar to the rest of the utility bill

Solar economics are easier to interpret when the tariff, storage and vehicle loads are connected to the same local context.

Utility tariff profile

Review the source tariff and verification status behind local electricity economics.

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