The US energy groups Dynegy Corporation and Vistra Energy have completed their US$1.7bn all-out merger deal, which was signed in October 2017. The resulting company, named Vistra Energy, has a combined market capitalization of US$10bn and a combined enterprise value over US$20bn. It will own more than 40 GW of capacity, of which 60% is gas-fired and almost 85% located in the Electric Reliability Council of Texas (ERCOT), PJM Interconnection and ISO New England (ISO-NE) competitive power markets. It will sell around 75 TWh/year on the retail markets, serving approximately 240,000 commercial and industrial customers along with 2.7 million residential customers.
Dynegy is present throughout the Northeast, Mid-Atlantic, Midwest, and Texas, where it operated 27 GW of power generation facilities (17 GW of which are gas-fired and 9 GW of are coal-fired) and supplied 1.2 million customers. Vistra Energy is the parent company for TXU Energy and Luminant. It operated 18 GW of power generation facilities, including 2.3 GW of nuclear power plants, 8 GW of coal-fired, and 7.5 GW of gas-fired capacity, and supplied 1.7 million residential and business customers in Texas.