Koch Alaska Pipeline Company, a subsidiary of KPL, owns a 3.08 percent interest in the Trans Alaska Pipeline System. The 800-mile common-carrier pipeline transports crude oil from the North Slopes of Alaska and Prudhoe Bay to Alaskan refineries and the port of Valdez, the northernmost ice-free port in the United States.
The Trans Alaska Pipeline System is operated by the Alyeska Pipeline Service Company, which was established in 1970 to design, construct, operate and maintain the Trans Alaska Pipeline System. Construction began in 1975, was completed in 1977 and crude oil began flowing in June, 1977. The 48-inch diameter steel pipeline crosses three mountain ranges and more than 800 rivers and streams.