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Eversource (NSTAR)

Eversource (previously NSTAR) is the electric utility for about 3.6 million electric and natural gas customers in Connecticut, Massachusetts and New Hampshire.

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Eversource Service Area

Moving to the Eversource Service Area?Check out our guides to moving in or moving out of the Eversource service territory, or give us a call at 347-410-8789 to get service activated in your name

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About Eversource

Eversource Energy, previously known as Northeast Utilities, serves 3.6 million electric and natural gas customers in Connecticut, Massachusetts and New Hampshire. Northeast Utilities owned the individual operating companies: Connecticut Light & Power, Public Service of New Hampshire, Western Massachusetts Electric and Yankee Gas. It then merged with NSTAR in 2012, which served itself 1.4 million customers in Massachusetts, including in Boston.

Eversource Energy in Numbers

3.6 million electric and gas customers

500 towns in the electric service territory

122 towns in the electric service territory

13,220 square miles of electric territory

3,408 square miles of gas territory

Contact Eversource Energy

You can reach Eversource Energy by:

  • Telephone, for emergencies: 1-800-592-2000
  • Telephone, for customer service: 1-800-592-2000
  • By mail at the following postal address: Eversource, P.O. Box 660369, Dallas TX 75266-0369

Find more ways to contact Eversource Energy

Understanding Your Eversource Energy Bill

Check out our detailed breakdown of how to understand your Eversource Energy bill.

Pay Your Eversource Energy Bill

Eversource accepts the following types of payment methods:

  • Check
  • Direct bank transfer
  • Credit or debit card (may incur extra charges)
  • Cash (at designated third-party agents throughout Pennsylvania)

Find out more about how to pay your Eversource bill:

How to Save on Your Eversource Bill

As well as cutting your energy consumption. Alternate suppliers can offer competitive rates and good deals, as well as a wider variety of types of power (such as green electricity). Call us at 347-410-8789 to find the best rates available in your area.