Nstar headquarters details
Location map
Open in Google MapsAll Nstar office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Boston HQ | Massachusetts | United States | Headquarters |
About Nstar
Nstar (New York Stock Exchange (NYSE)) is headquartered in Boston, Massachusetts, United States. Founded in 1999, the company operates across 7 countries with approximately 3,000 employees worldwide.
Where is Nstar's main office?
Nstar's main headquarters office is located at 800 Boylston St 3rd Fl, Boston, Massachusetts 02199-8108. This serves as the company's primary corporate address and is home to its executive leadership team.
Nstar regional offices
Beyond its headquarters in Boston, Nstar maintains 30 offices across 7 countries. Regional offices span 7 countries.
Nstar contact information
The main switchboard for Nstar headquarters can be reached at 781-564-9919. For investor relations, visit nstar.com/investor-relations.
What does Nstar do?
NSTAR was a utility company that provided retail electricity and natural gas to 1.4 million customers in eastern and central Massachusetts, including the Boston urban area. NSTAR became a subsidiary of Northeast Utilities in April 2012. In February 2015, Northeast Utilities and all of its operating companies (Western Massachusetts Electric, Public Service New Hampshire, Connecticut Light and Power, Yankee Gas, and NSTAR Gas and Electric) became one large company known as Eversource Energy.
Frequently asked questions
Where is Nstar headquarters?
Nstar's headquarters is located at 800 Boylston St 3rd Fl, Boston, Massachusetts 02199-8108, United States.
How many offices does Nstar have?
Nstar operates 30 offices across 7 countries as of 2026.
What is Nstar's corporate address?
The official corporate address is 800 Boylston St 3rd Fl, Boston, Massachusetts 02199-8108.
When was Nstar founded?
Nstar was founded in 1999 and has grown to employ approximately 3,000 people worldwide.
What is Nstar's phone number?
The main phone number for Nstar headquarters is 781-564-9919.