By the end of 2010, 194 GW of wind power capacity had been installed worldwide (figure II.6), of which 84 GW were in EU, 40 GW in the United States, 42 GW in China and 13 GW in India. In 2010, 35.7 GW of new capacity were installed, which was 6 per cent less capacity than in 2009. More than half of this new capacity was installed in China (16.5 GW) and India (2.1 GW), compared with 9.8 GW in EU and 5.1 GW in the United States (Eurobserver, 2011). For several decades, through its R&D, and its “Sunshine Programme” from 1994 to 2004, Japan refined the technology and successfully reduced the costs of a 3kW roof system from 6 million to 2 million yen.