Information on this page is for customers in 

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Energy Suppliers

Eversource provides assistance and supports energy suppliers and brokers in our deregulated markets.

Electric Supplier Information

Eversource contact information and important documents and resources by region. 

Connecticut

New Hampshire

Eastern Massachusetts

Western Massachusetts

Gas Supplier Information

Contacts and other helpful information for natural gas suppliers operating within our gas territories.

Connecticut

Eastern Massachusetts - NSTAR

Eversource Gas of Massachusetts (formerly Columbia Gas)

Wholesaler Supplier Information

Resources for potential wholesale electric suppliers and information relevant to any active energy procurement processes.

Connecticut (Standard Service and Supplier of Last Resort Service)

New Hampshire

Eastern Massachusetts

Western Massachusetts