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Eversource Massachusetts rate increase

Electric · Massachusetts · Investor-owned utility · part of Eversource Energy

In effect

Last checked

Eversource Massachusetts' latest approved rate change took effect January 1, 2026: January 2026 PBR distribution rate adjustment (D.P.U. 22-22 plan). See the details below for what the sources say about bill impacts.

Details and sources

Rate changes, newest first

August 2026 basic service (default supply) increase

Fuel / purchased power · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
May 15, 2026
Decision expected
—
Effective
August 1, 2026
Requested increase
Not disclosed
Approved increase
Not disclosed
Docket
Not disclosed

Eversource's residential basic service (default supply) price in eastern Massachusetts rose from 15.629 to 17.323 cents/kWh (about 11%) for Aug. 1, 2026 to Jan. 31, 2027; in western Massachusetts it rose from 13.683 to 15.934 cents (16%). Eversource cited market conditions. Customers on municipal aggregation or competitive supply are not affected, and delivery rates are unchanged.

Utility's stated reasons

  • cold winter raised natural gas demand
  • international instability, including the Iran conflict
Sources (4) · Based on news or utility announcements

Last verified Sep 29, 2026

Winter 2026 bill reduction with deferred recovery

Other · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
Not disclosed
Decision expected
—
Effective
February 1, 2026
Requested increase
Not disclosed
Approved increase
Not disclosed
Docket
Not disclosed

At the governor's request, residential electric bills were cut 25% for usage from Feb. 1 to Mar. 31, 2026. About 15 points came from $180 million in state funds shared across utilities; Eversource defers the rest and recovers it gradually during lower-usage summer months. After initially proposing interest at the prime rate, Eversource agreed to waive carrying charges.

Utility's stated reasons

  • state initiative to lower winter bills
Sources (3) · Based on news or utility announcements

Last verified Sep 29, 2026

January 2026 PBR distribution rate adjustment (D.P.U. 22-22 plan)

Multi-year rate plan · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
September 15, 2025
Decided
December 30, 2025
Effective
January 1, 2026
Requested increase
$55.1 million
Approved increase
$55.1 million
Docket
Not disclosed

Under the 5-year performance-based plan approved in 2022, NSTAR Electric files each year to adjust base distribution (delivery) rates. It sought a $55.1 million increase for Jan. 1, 2026: $25.2 million for inflation and $29.9 million for capital additions, for a total base distribution revenue requirement of $1.34 billion. The DPU approved it on Dec. 30, 2025.

Utility's stated reasons

  • inflation adjustment
  • capital additions (grid investment)
Sources (2) · Verified against regulator or utility filings

Last verified Sep 29, 2026

January 2025 PBR distribution rate adjustment (D.P.U. 22-22 plan)

Multi-year rate plan · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
September 16, 2024
Decided
December 23, 2024
Effective
January 1, 2025
Requested increase
$55.8 million
Approved increase
$55.8 million
Docket
Not disclosed

NSTAR Electric's annual performance-based adjustment for 2025 raised base distribution (delivery) rates by $55.8 million on Jan. 1, 2025: $35.3 million for inflation and $20.5 million for capital additions. The DPU approved the filing on Dec. 23, 2024. Default supply prices are set separately.

Utility's stated reasons

  • inflation adjustment
  • capital additions (grid investment)
Sources (2) · Verified against regulator or utility filings

Last verified Sep 29, 2026

Who decides

  • Massachusetts Department of Public Utilities (Massachusetts) · Search dockets

Utility website: www.eversource.com

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Last checked Oct 2, 2026. Spotted something out of date? Tell us.