Message Us We typically reply within two business days. You can also call us at (888) 835-4672 or email us directly at callcenter@greenmountainpower.com. Contact Us Inquiry Type*General InquiryBilling & Payment InquiryCustomer SupportYour Name* Phone*Email* Account Number Address Where Service is Provided Street Address Address Line 2 City AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingArmed Forces AmericasArmed Forces EuropeArmed Forces Pacific State ZIP Code Message*CAPTCHA