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Wallaro energy is the largest refining enterprise in North America, founded in 1955, and changed into the existing name in 1997, and is headquartered in San Antonio, Dallas. The company owns and operates refineries in the United States and Canada, and it has about 2 million bpd joint transmission capabilities. Valero is also one of the country's leading retail operators, which operates retail wholesale markets in the United States and Canada under a variety of brands including diamond shamlock, Ultramar, valro, beacon and total.
Valero energy acquired the premcorp. (PCO) refinery on April 26th, 2005 at the cost of cash plus shares of $6.9 billion and debt commitment of $1.8 billion. After the acquisition, it will become a large refining enterprise in North America.
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