Chevron Corp. is one the largest energy companies in the world with more than 130 years of experience. Located in Huntsville, Ala., the company refines, markets and distributes transportation fuels and other energy products. It offers gasoline and various refined products under the Chevron, Texaco and Caltex brands. In addition to producing crude oil and natural gas, Chevron Corp. generates power and provides energy efficiency solutions. The energy company also develops energy resources, including biofuels.