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4.0avg. commissioner years of serviceSource: Advanced Energy United
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23.60¢avg. price per kWhSource: EIA
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12legislative session length, monthsSource: Legislative Session
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46%residential market share of the largest utilitySource: December 2024, Advanced Energy United
breakdown of market shareUtility Percentage Market Share in Massachusetts
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Eversource Energy
Market Share46% -
National Grid
Market Share43%
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2governor years servedSource: December 2024, Advanced Energy United
Utilities
Massachusetts Utilities
In most cases, we only provide profiles for the largest five utilities with more than 100,000 total customers.
The schedules listed here reflect what is established in statute, rules, or Orders. However, PUCs and utilities sometimes deviate from these schedules. Please check the most recent proceeding by going to the "Important Recurring Proceedings" section for each utility below.
Policy AreaRenewable Portfolio Standard Compliance Report
ScheduleRetail electricity suppliers are required to submit annual compliance filings to the Department of Energy Resources by July 1st, demonstrating that they met their Renewable and Alternative Energy Portfolio Standard obligations for the prior year.
Policy AreaEnergy Efficiency Plan
ScheduleElectric and natural gas distribution companies must file a three-year energy efficiency plan with the Department of Public Utilities every three years on or before October 31st.
Eversource Energy
Ownership TypeInvestor Owned
Balancing AuthorityISO New England Inc.
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in MA46%
National Grid
Ownership TypeInvestor Owned
Balancing AuthorityISO New England Inc.
NERC Regional EntityNPCC
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in MA43%