Operational for more than 130 years, Chevron has been one of the world's largest integrated energy companies. Located in Honolulu, Hawaii, the company sells gasoline and refined products under the Chevron, Texaco and Caltex brands. The firm's other lines of business includes chemical production, mining, energy research and nanoscience. Along with a range of power facilities, Chevron is also one of the largest producers of geothermal energy globally. In addition, the company has formed research partnerships with many academic institutions to pursue renewable energy technology, including biofuels from non-food sources.