Transportadora de Gas Natural (TGN) built a 23-mile, 30-inch natural gas pipeline that began to supply natural gas from the United States-Mexico border near San Diego to the Presidente Juárez power plant in Rosarito, Baja California, in the summer of 2000. Under a 10-year agreement, Sempra Energy companies provide a complete energy supply package to the plant, including buying up to 300 million cubic feet per day of natural gas in the United States and transporting it across the border to the plant.