Korea Electric Power Corporation, better known as KEPCO, is the largest electric utility in South Korea and responsible for the generation, transmission and distribution of electricity and the development of electric power projects including those in nuclear power, wind power and coal. KEPCO is responsible for 93% of Korea's electricity generation. The Korean government owns a 51% share of KEPCO, and together with its affiliates and subsidiaries, KEPCO has an installed capacity of 65,383 MW. On the 2011 Fortune Global 500 ranking of the world's largest companies, KEPCO was ranked 271. KEPCO is a member of the World Energy Council, the World Nuclear Association and the World Association of Nuclear Operators. KEPCO was listed on the Korea Composite Stock Price Index (KOSPI) on August 10, 1989 and later in 1994 on the New York Stock Exchange. Following a push by the Korean government to restructure Korea's power industry which began in the mid-1990s, the Act on the Promotion of Restructuring the Electric Power Industry was proclaimed on December 23, 2000, after which the electricity generation business was split up into Korea Hydro & Nuclear Power, a subsidiary responsible for nuclear & hydro power generation, and five thermal power generation companies: Korea South-East Power, Korea Midland Power, Korea Western Power, Korea Southern Power, and Korea East-West Power.