CMP Modernizing Westbrook Substation
Westbrook, ME — May 9, 2025 – Central Maine Power (CMP), a subsidiary of Avangrid Inc., announced that crews are making significant progress modernizing a decades-old substation in Westbrook serving more than 6,100 of the utility’s customers.
These improvements include the installation of a new transformer that was moved into the substation site in the Pride’s Corner area of the city on Wednesday morning using a large crane. Today, crews are placing the transformer, which weighs 105,000 pounds, into its final location in the substation and are beginning the formal installation process.
This new transformer replaces another one that was approximately 50 years-old and will alleviate energy capacity constraints at this facility, allowing more energy to flow through.
“Adding roughly 40% more capacity to this substation with this new infrastructure will prepare this area of Greater Portland for years of future growth,” said Eric Sutton, Vice President of Electric Operations for CMP. “We’re proud to take this and other proactive steps forward to build the 21st century grid Mainers are using for critical parts of everyday life like education, healthcare, going to work and heating their homes.”
This substation modernization project is one of several currently ongoing across communities CMP serves including upgrades at a substation in Scarborough that will benefit more than 16,500 customers in South Portland, Scarborough and Cape Elizabeth.
B/Roll of the new transformer being delivered is available for media to download rights-free.
About Central Maine Power: Central Maine Power Company (CMP), a subsidiary of Avangrid, Inc., is Maine’s largest electricity transmission and distribution utility. Established in 1899 and based in Augusta, Maine, CMP serves approximately 646,000 customers across 346 communities in central and southern Maine. It operates approximately 23,500 miles of distribution lines and 2,900 miles of transmission lines. Over the last decade, the company has invested approximately $3.5 billion in Maine system infrastructure. For more information, visit www.cmpco.com.
About Avangrid: Avangrid, Inc. is a leading energy company in the United States working to meet the growing demand for energy for homes and businesses across the nation through service, innovation, and continued investments by expanding grid infrastructure and energy generation projects. Avangrid has offices in Connecticut, New York, Massachusetts, Maine and Oregon, including operations in 23 states with approximately $47 billion in assets, and has two primary lines of business: networks and power. Through its networks business, Avangrid owns and operates eight electric and natural gas utilities, serving more than 3.3 million customers in New York and New England. Through its power generation business, Avangrid owns and operates more than 75 energy generation facilities across the United States producing 10.5 GW of power for over 3.1 million customers. Avangrid employs approximately 8,000 people and has been recognized by JUST Capital as one of the JUST 100 companies – a ranking of America’s best corporate citizens in 2025 for the fifth consecutive year. The company was named among the World’s Most Ethical Companies in 2025 for the seventh consecutive year by the Ethisphere Institute. Avangrid is a member of the group of companies controlled by Iberdrola, S.A. For more information, visit http://www.avangrid.com.