Nstar, National Grid, Eversource: Who's Your Electric Company?

Eversource Energy is a publicly traded, Fortune 500 energy company that operates in Connecticut, Massachusetts, and New Hampshire. It was created in 2015 after NSTAR merged with Northeast Utilities. NSTAR was a major electric and gas provider in Greater Boston and Eversource remains Connecticut's largest electric utility.

NSTAR mergers with Northeast Utilities to form Eversource

NSTAR (National Grid) merged with Northeast Utilities in 2012, resulting in the formation of Eversource. The major electric and gas provider in Greater Boston was NSTAR, which included the former Boston Edison Company, Cambridge Electric Light Company, Commonwealth Electric Company, Commonwealth Gas, and Cambridge Gas Company. The resulting company retained the Northeast Utilities name for the next several years and rebranded themselves as "Eversource Energy" on February 2, 2015. The stock symbol changed on February 19, 2015, from "NU" to "ES".

Northeast Utilities announced that it would merge with NSTAR in October 2010. The deal closed in April 2012 after government approvals. In 2015, the company (now known as Eversource) agreed to sell all of its New Hampshire generation assets in the same manner it sold its assets in Massachusetts and Connecticut between 2000 and 2006. The sale of the New Hampshire generation fleet was approved by the state's Public Utilities Commission on November 29, 2017, and completed on January 10, 2018.

Eversource remains Connecticut's largest electric utility, serving more than 1.2 million residential, municipal, commercial and industrial customers in approximately 149 cities and towns. Eversource is also New Hampshire's largest electric utility, serving over 500,000 customers, including homes and businesses, in 211 cities and towns throughout the state. Furthermore, Eversource is a major energy distributor to 1.7 million customers across Massachusetts, including over 1.4 million electric customers in 140 communities and over 300,000 natural gas customers in 51 communities.

Before its rebranding, the company operated six main subsidiaries: Connecticut Light and Power (CL&P), Public Service Company of New Hampshire (PSNH), Western Massachusetts Electric Company (WMECO), Yankee Gas Services Company (Yankee Gas), NSTAR Electric, and NSTAR Gas.

Eversource serves over 1.2 million customers

Eversource Energy is a publicly traded, Fortune 500 energy company headquartered in Hartford, Connecticut, and Boston, Massachusetts. The company serves over 1.2 million residential, municipal, commercial and industrial customers in approximately 149 cities and towns.

Eversource Energy is the largest electric utility in Connecticut, New Hampshire and Massachusetts. In New Hampshire, the company serves over 500,000 customers, including homes and businesses, in 211 cities and towns throughout the state. In Massachusetts, the company serves over 1.4 million electric customers in 140 communities and over 300,000 natural gas customers in 51 communities.

Eversource Energy is a major energy distributor to 1.7 million customers across Massachusetts. The company operates six main subsidiaries: Connecticut Light and Power (CL&P), Public Service Company of New Hampshire (PSNH), Western Massachusetts Electric Company (WMECO), Yankee Gas Services Company (Yankee Gas), NSTAR Electric, and NSTAR Gas.

NSTAR itself was the product of corporate mergers, and included the former Boston Edison Company, Cambridge Electric Light Company, Commonwealth Electric Company, Commonwealth Gas, and Cambridge Gas Company. All now currently operate under the Eversource name.

In 2015, the company agreed to sell all of its New Hampshire generation assets in the same manner it sold its assets in Massachusetts and Connecticut between 2000 and 2006. The sale of the New Hampshire generation fleet was approved by the state's Public Utilities Commission on November 29, 2017, and completed on January 10, 2018.

Eversource electricity and gas provider

Eversource Energy is a publicly traded, Fortune 500 energy company headquartered in Hartford, Connecticut, and Boston, Massachusetts. The company was formed in 2012 after Northeast Utilities merged with NSTAR, a major electric and gas provider in Greater Boston. The company rebranded itself as "Eversource Energy" in 2015.

Eversource Energy offers retail electricity, natural gas service, and water service to approximately 4 million customers in Connecticut, Massachusetts, and New Hampshire. The company is Connecticut's largest electric utility, serving more than 1.2 million residential, municipal, commercial, and industrial customers in approximately 149 cities and towns. It is also New Hampshire's largest electric utility, serving over 500,000 customers in 211 cities and towns.

Eversource Energy is a major energy distributor to 1.7 million customers across Massachusetts, including over 1.4 million electric customers in 140 communities and over 300,000 natural gas customers in 51 communities. The company has more than 4,270 circuit miles of electric transmission lines, 72,000 pole miles of distribution lines, and 6,459 miles of natural gas pipeline in New England.

Eversource Energy's subsidiaries include Connecticut Light and Power (CL&P), Public Service Company of New Hampshire (PSNH), Western Massachusetts Electric Company (WMECO), Yankee Gas Services Company (Yankee Gas), NSTAR Electric, and NSTAR Gas. The company has agreed to sell all of its New Hampshire generation assets in the same manner it sold its assets in Massachusetts and Connecticut between 2000 and 2006.

Eversource Energy's delivery charges are predetermined and can change due to seasonality or other factors. The company's supply charges are not reflected in its billing.

Eversource merged with Aquarion Water Company

Eversource Energy is a publicly traded, Fortune 500 energy company headquartered in Hartford, Connecticut, and Boston, Massachusetts. It is New England's largest energy company and serves approximately 4 million customers in Connecticut, Massachusetts, and New Hampshire.

In 2017, Eversource acquired Aquarion Water Company for $1.675 billion, bringing a major regional water utility into a company whose core business is the transmission and distribution of electricity and natural gas. The acquisition combined two companies that are leaders in providing the critical infrastructure New England residents and businesses need to grow and thrive.

Aquarion has been in the water business since 1857 through its predecessor company (Bridgeport Hydraulic Company) and has continued to grow and diversify its business since its acquisition by Eversource in 2017. Under Eversource’s ownership, Aquarion has added approximately 30,000 customers through six acquisitions – including New England Service Company (CT, NH, MA) in 2021, The Torrington Water Company (CT) in 2022 and the Pinehills Water System in Plymouth (MA) in 2023 – that grew the rate base by a combined aggregate of approximately $200 million. This growth also includes Aquarion’s entry into the wastewater business with the purchase of the Town of New Hartford’s (CT) municipal water and wastewater treatment systems in 2023 and the purchase of the City of Ansonia’s (CT) municipal wastewater system in 2024.

The transaction is subject to regulatory approval by the Connecticut Public Utilities Regulatory Authority, the Massachusetts Department of Public Utilities, and the New Hampshire Public Utilities Commission.

Eversource largest electric utility in Connecticut

Eversource Energy is a publicly traded, Fortune 500 energy company headquartered in Hartford, Connecticut, and Boston, Massachusetts. The company was formerly known as Northeast Utilities and NSTAR and was created through a series of mergers involving Boston Edison Company, Cambridge Electric Light Company, Commonwealth Electric Company, Commonwealth Gas, and Cambridge Gas Company.

In 2012, the company merged with NSTAR, a major electric and gas provider in Greater Boston. The resulting company continued to operate under the Northeast Utilities name for several years before rebranding itself as "Eversource Energy" in 2015.

Eversource Energy is Connecticut's largest electric utility, serving more than 1.2 million residential, municipal, commercial, and industrial customers in approximately 149 cities and towns. The company also operates as New Hampshire's largest electric utility, serving over 500,000 customers in 211 cities and towns throughout the state.

In addition to its electric utility services, Eversource Energy is a major energy distributor to 1.7 million customers across Massachusetts. This includes over 1.4 million electric customers in 140 communities and over 300,000 natural gas customers in 51 communities.

Eversource Energy offers a range of regulated subsidiaries providing retail electricity, natural gas service, and water service to approximately 4 million customers in Connecticut, Massachusetts, and New Hampshire. The company's large network of electric transmission lines, distribution lines, and natural gas pipelines in New England allows it to serve its customers reliably and efficiently.

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