TriEagle Energy is a Texas-based retail energy provider offering electricity service to residential and commercial customers. ... With innovative products, outstanding customer service, and transparent pricing, thousands have entrusted their power needs to TriEagle since 2003. TriEagle is a subsidiary of Vistra Energy (NYSE: VST), a premier, integrated energy company based in Irving, Texas, combining an innovative, customer-centric approach to retail with a focus on safe, reliable, and efficient power generation. Through its retail and generation businesses, Vistra operates in 20 states and the District of Columbia and six of the seven competitive markets in the U.S. read more