NSTAR Customer Service Number

Are you looking for the NSTAR customer service number and having a difficult time finding it? That’s because NSTAR is now Eversource. Read on to find out how to report an outage, pay a bill, or cancel service.

NSTAR Customer Service Number

The NSTAR or Eversource customer service numbers depends on where you are coming from and on what type of service you have. Read carefully to make sure you have the correct customer service number.

Residents of Connecticut should use the following numbers.

If your power is out, call 800-286-2000. Do you smell gas? Call 877-944-5325. Residents of Connecticut with customer service issues regarding their electric service should call 800-286-2000. For questions regarding your credit or collections, call 800-286-2828. Do you have problems with your gas service? Contact customer care at 800-989-0900.

Are you a resident of Eastern Massachusetts? Pay attention! Here are your customer service numbers. If your power is out or you smell gas, call 800-592-2000. For questions regarding credit and collections, call 866-861-6225. Builders of contractors with energy questions should call 888-633-3797. Customers wishing to switch to gas heat should call 866-678-2744. Do you need to make a claim? Leave a message at 844-685-4475. The supplier privacy number is 866-746-1110. Customers who are hearing impaired may connect with the following TTY/TDD number: 800-322-8242.

Do you live in Western Massachusetts? Here are your numbers! If you are sitting in the dark, call 877-659-6326. The customer service number is 877-659-6326. Credit and collections questions can be directed to 877-963-2632. Builders and contractors can use the following number: 800-880-2433. The supplier privacy number for Western Massachusetts is 866-746-1110. Customers who are hearing impaired can call 800-221-1341.

I haven’t forgotten about you, New Hampshire residents! Here are your customer care numbers for Eversource. If your power is out, call 800-662-7764. The customer care number is 800-662-7764. The credit and collection number is 844-273-7760. Builders and contractors may call 800-362-7764. New Hampshire residents who are Eversource customers can call 800-346-9994.

NSTAR Email/Contact Form

To find a contact form, click here: https://www.eversource.com/content/general/about/contact. The webpage is divided into four sections: Connecticut, Eastern Massachusetts, Western Massachusetts, and New Hampshire. Under each area, there is a tab that says “email.” Click on that tab to fill out a contact form. Please have your account number ready as well as all your customer contact information. Appropriate topics include:

Residential – Customer Service Electric

Residential – Customer Service Gas

Business – Customer Service Electric

Business – Customer Service Gas

Tree Trimming Questions

Meter Services for Business Customers

Report Energy Theft

Construction and Municipal Official

NSTAR Mailing Address

Are you a resident of Connecticut?

To pay your bill, send payment to

Eversource
P.O. Box 650032
Dallas, TX 75265-0032

Other correspondence may be addressed to

Eversource
107 Selden Street
Berlin, CT 06037

Are you a resident of Eastern Massachusetts?

Send bill payments to

Eversource
P.O. Box 660369
Dallas, TX 75266-0369

Other correspondence should be mailed to

Eversource
247 Station Drive
Westwood, MA 02090

Are you a resident of Western Massachusetts?

Pay your bill to

Eversource
P.O. Box 650851
Dallas, TX 75265-0851

Other correspondence may be mailed to

Eversource
P.O. Box 270
Hartford, CT 06141-0270

Residents of New Hampshire should send their bill payments to

Eversource
P.O. Box 650047
Dallas, TX 75265-0047

Other written inquiries can be directed to

Eversource
P.O. Box 330
Manchester, NH 03105-0330

NSTAR Live Chat

Click on the bottom right green icon that says “Ask Eversource” to initiate a chat with customer care.

NSTAR Support Website

Much of the customer support is available after logging into individual accounts. Once you have logged in, you can view your account, pay your bill, learn about billing and rates, report or see an outage, or choose an electric supplier. Moving? Let NSTAR know after you have logged into your account.

NSTAR Social Media Accounts

Are you more comfortable working through social media?

NSTAR Facebook: https://www.facebook.com/nfmfans.

Send messages to Eversource customer care through Facebook. Customer care reps usually respond within an hour.

NSTAR Twitter: https://twitter.com/eversourceCorp

Tweet and message NSTAR through Twitter.

NSTAR LinkedIn: https://www.linkedin.com/company/eversourceenergy/

Connect with one of the 5,000 NSTAR employees through LinkedIn.

NSTAR Google+: NSTAR or Eversource have not put any content on their Google+ page.

NSTAR YouTube Channel: https://www.youtube.com/channel/UCpq2zozgxhuM4iafvhVImVg

Subscribe to the NSTAR or Eversource YouTube Channel to learn about what is going on with your energy company.

NSTAR Instagram: https://www.instagram.com/eversourceenergy/

See photos of NSTAR employees giving back on their Instagram account photos.

About NSTAR

NSTAR or Eversource is New England’s largest energy delivery company.

NSTAR Headquarters Location Map