BP, or British Petroleum, is a multinational gas and oil company with headquarters in London. It is the fourth largest company overall in the world, and the third largest among energy companies. Additionally, BP is one of the world's six "supermajor" oil and gas companies. Operating in all areas of the industry, BP has stakes in exploration, production, refining, distribution and marketing. Additionally, it deals in gas and oil trading, power generation, including wind power and biofuels, and petrochemicals. BP is engaged in business in more than 80 countries, producing the equivalent of nearly 3 million barrels of oil per day.