This article focuses on the US Energy Information Administration estimates that coal generates 34 percent of the world's electricity today and will still account for more than 30 percent in 2020. The backers of coal say that systems can be—and must be—developed to make coal more efficient to burn and less troublesome to the biosphere. The United States is also a supporter of the International Energy Agency and is one of the member countries that support IEA Coal Research, a program based in London. The plan for a gasification plant feeding a combined-cycle generating station is still in the demonstration stage in the United States. Although the process squeezes more efficiency out of coal and scores points for cleaner air and corporate goodwill, prospective buyers have yet to form a line around the block. New sources in Venezuela, which has South America’s mother lode of petroleum, have come onto the market, and competition is driving down coke prices.