Eversource Massachusetts (NSTAR Electric Company)

investor-ownedOfficial website →
Last verified (tariff snapshot)
Mar 22, 2026
EIA data year
2024
EIA updated
Mar 4, 2026
Page updated
Mar 22, 2026

Eversource Massachusetts, operating as NSTAR Electric Company, is an investor-owned electric utility serving customers in Massachusetts. Electric distribution for Boston, Cambridge, Framingham, Newton, New Bedford, Peabody, Waltham, and eastern Massachusetts. MA allows supplier choice; Energy Switch MA publishes Basic Service and competitive offers. Municipal aggregation programs include Boston Community Choice, Cambridge Community Electricity, Framingham Community Electricity (FCE), Newton Power Choice, New Bedford Community Electricity (MASS CEA), and Waltham Community Electricity (WCE).

This page brings together tariff-based rate information from our research, federal EIA statistics on sales and generation when available, and the cities and states this provider serves.

Residential rates

Rates vary across service territories (energy charge). Snapshot shown is representative; see city pages for local estimates.

Energy: 12.82¢/kWh–15.63¢/kWh

Tariff snapshot (Framingham, MA)

Customer charge
$0.00/mo
Energy charge (example tier)
12.82¢/kWh

Seasonal/tiered rates and riders may apply. Example tier used in our estimates.

masspowerchoice.com· verified 2026-03-22

Example bill at 1,000 kWh (derived from tariff snapshot): $128.18/mo

Based on snapshot; excludes local taxes/fees; riders may vary.

For city-specific estimates (including water, sewer, trash), see Framingham's full breakdown

Our estimates use tariff and official rate data from utility and regulatory sources. See our methodology for how we calculate bill estimates.

EIA Form 861 & 860 data (2024)

Supplemental data from the U.S. Energy Information Administration. Our tariff-based rates above remain primary for bill estimates. EIA data provides context on scale and generation.

Residential statistics

Avg. price (EIA)
19.92¢/kWh
EIA "avg price" reflects the full delivered price over the year (including riders/delivery and seasonal effects), so it can be higher than a single tariff energy tier.
Residential sales
7.9M MWh
Customers
1.3M
Revenue
$1.6B

Generation mix (capacity)

100.0% renewable · 45.1 MW total

  • Solar45.1 MW

Sources: EIA-861 (sales, revenue, customers), EIA-860 (generation).

States & cities served

Cities in our dataset where this provider offers electric service. Click through to see utility cost estimates for each city.

Data sources

  • Our research: Tariff documents, PSC/regulatory filings, and official utility rate schedules. Each city page cites sources and last-verified dates.
  • EIA (2024): Form 861 (sales, revenue, customers) and Form 860 (generation capacity by fuel). Supplementary context; our tariff-based rates remain primary for bill estimates.

Methodology · All providers

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