PECO | 30,495 followers on LinkedIn. PECO. The future is on. | Advancing smart energy to provide safe, reliable, affordable and clean energy and energy services for our customers and the communities we serve.​ With a history of more than 130 years of service to the Greater Philadelphia region, PECO has a long-standing commitment to a culture of excellence. Formerly, Philadelphia Electric Company, PECO was incorporated in 1902 but finds it origins in The Brush Electric Light Company of Philadelphia, which was formed in 1881.