Reliant Energy chat agents are available online 24 hours a day, 7 days a week. Reliant's phone number to reach a customer care agent in English or Spanish is 833-339-0416. Customers can view their account details on the Reliant app, or go to the Reliant Energy login page to sign in. You'll find full contact information and links to key Reliant website pages on HomeEnergyClub.com.