NSTAR Electric Company Greater Boston Residential Assistance A2 (R-2) with electric heat ($0.1034/kWh)

Data quality note. This tariff is flagged (restricted eligibility, delivery only). It is shown for reference and excluded from rankings. How anomalies are flagged →

$0.1034per kWh, all in

$1,241a year at 1,000 kWh/mo

$7.50fixed, before any usage

What this tariff charges

Fixed charge	$7.50 per month
Structure	Flat
Filed	2026-02-01

Energy rates

The charged price is the base rate plus its adjustment. Adjustments carry fuel and rider costs and are frequently most of the bill, so a comparison built on the base rate alone is meaningless.

Energy charge

Tier	Up to	Base	Adjustment	Charged $/kWh
1	no limit	0.09591	0.00000	0.09591

What it costs at different usage levels

kWh per month	Annual total	Effective $/kWh
500	$665.46	$0.1109
1000	$1,240.92	$0.1034
2000	$2,391.84	$0.0997

Effective rate includes the fixed charge, which is why it falls as usage rises.

Rooftop solar on this tariff

A 7 kW system costing $21,000 before incentives would save between $482 and $874 a year on this tariff, paying back in 24–44 years . No federal tax credit is included: Section 25D ended on December 31, 2025.

no sell rate filed, but this utility reports residential net metering - the range spans no export credit to full retail netting. Compare across this state →

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