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  • NSTAR
    NSTAR
    (617) 424-2000
    800 Boylston St, 2199  Boston

    As Massachusetts’ largest investor-owned electric and gas utility, NSTAR has been transmitting and delivering electricity and natural gas for more than 100 years. We serve nearly 1.4 million residential and business customers in over 100 Eastern Massachusetts communities. NSTAR’s regulated subsidia…