Chevron Corporation (NYSE: CVX) is an American multinational energy corporation. One of the successor companies of Standard Oil, it is headquartered in San Ramon, California, and active in more than 180 countries. Chevron is engaged in every aspect of the oil, natural gas, and geothermal energy industries, includinghydrocarbon exploration and production; refining, marketing and transport; chemicals manufacturing and sales; and power generation. Chevron is one of the world's largest oil companies; as of 2014, it ranked third in the Fortune 500 list of the top US closely held and public corporations and sixteenth on the Fortune Global 500 list of the top 500 corporations worldwide. It was also one of the Seven Sisters that dominated the global petroleum industry from the mid-1940s to the 1970s. Chevron's downstream operations manufacture and sell products such as fuels, lubricants, additives and petrochemicals. The company's most significant areas of operations are the west coast of North America, the U.S. Gulf Coast, Southeast Asia, South Korea, Australia and South Africa. In 2010, Chevron sold an average 3.1 million barrels per day (490×103 m3/d) of refined products like gasoline, diesel and jet fuel. Chevron's alternative energy operations include geothermal, solar, wind power, biofuel, fuel cells, and hydrogen. In 2011–2013, the company planned to spend at least $2 billion on research and acquisition of renewable power ventures. Chevron has claimed to be the world's largest producer of geothermal energy. In October 2011, Chevron launched a 29-MW thermal solar-to-steam facility in the Coalinga Field to produce the steam for enhanced oil recovery. The project is the largest of its kind in the world.