Vietnam's energy sector is dominated largely by the state-controlled Vietnam Electricity Group (EVN). As of 2017, EVN made up about 61.4% of the country's power generation system with a total power capacity of 25,884 MW. Other energy sources are PetroVietnam (4,435 MW), Vinacomin (1,785 MW) and 10,031 MW from build–operate–transfer (BOT) investors.