What is the phone number for first energy customer service? First Energy Customer Support Service Phone Number. The customer support phone number of First Energy is + 1-888-544-4877, +1 800-633-4766 (Click phone number to call).What is the phone number for first energy? First Energy Customer Service Phone Number. The Customer Service Phone Number of First Energy is: + 1-888-544-4877, +1 800-633-4766. FirstEnergy is a public electric utility that provides a vast array of Energy services from electricity generation, distribution, transmission, energy management and other energy related services.Who is the ceo of firstenergy? The CEO of Firstenergy Service Company is Charles E Jones. Firstenergy Service Company is incorporated in the state of Ohio.