Valero Energy Corp.

Valero Energy Corporation, through its subsidiaries, is an international manufacturer and marketer of transportation fuels and petrochemical products. Valero is a Fortune 50 company based in San Antonio, Texas, and it operates 15 petroleum refineries with a combined throughput capacity of approximately 3.1 million barrels per day and 14 ethanol plants with a combined production capacity of 1.73 billion gallons per year.