A toll free telephone number for Constellation Energy New Customer Service is 1-877-676-3382.
Sign up a new account with Constellation Energy today and receive a $50.00 VISA Gift Card! Call Constellation Energy at 1-877-676-3382 today for current conditions and details.
Constellation Energy, a FORTUNE 500 company with 2007 revenues in excess of $21 billion. Constellation Energy is the nation’s largest competitive supplier of electricity to large commercial and industrial customers and the nation’s largest wholesale power seller.