Northeast Utilities System
One Federal Street Building 111-4
Springfield, MA 01105 USA
Corporate Phone Number: 1-413-785-5871
Customer Service Numbers:
CL&P: 1-800-286-2000
NSTAR: 1-800-592-2000
PSNH: 1-800-662-7764
WMECo: 1-877-659-6326
Yankee Gas: 1-800-989-0900
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