The Energy Corridor is a business district in Greater Houston, Texas, located on the west side of the metropolitan area between Beltway 8 and the Grand Parkway. The district straddles a 7-mile (11 km) stretch of Interstate 10 (the Katy Freeway) from Kirkwood Road westward to Barker Cypress Road and extends south along Eldridge Parkway to Briar Forest Drive. Parts of the district overlap with the Memorial area of Houston. The district is located north of Westchase, another major business district of Houston, and east of Greater Katy. Many energy sector companies have major operations in the Energy Corridor, including BP America, Citgo, ConocoPhillips, and Shell Oil Company. Non-energy firms also have a presence; Sysco and Gulf States Toyota Distributors are both headquartered in the district. The Energy Corridor contains over 26 million square feet (2,400,000 m2) of office space, with an employment capacity of over 105,000. Over 26,000 acres (41 sq mi; 110 km2) of urban park area borders the Energy Corridor, including George Bush Park and Bear Creek Pioneers Park. These parks are located within Barker Reservoir and Addicks Reservoir, respectively, which comprise a major flood control system for Buffalo Bayou.