Dynegy | 12,338 followers on LinkedIn. At Dynegy, we deliver more than just power to residential, municipal, commercial, and industrial customers across several states. We are committed to being a leader in the electricity sector throughout the Midwest and Northeast. Dynegy is a subsidiary of Vistra (NYSE: VST), a leading Fortune 500 integrated retail electricity and power generation company based in Irving, Texas, that provides essential power resources to customers, businesses, and communities from California to Maine.