From 1996 onward, prices began to increase in Germany, owing to rapidly expanding demand both domestically and for exports to emerging economies and later owing to higher commodity prices. Further, China mandated domestically produced components and, along with India, instituted domestic technology certification programmes. As in the case of Europe, wind power plants were not necessarily built in the most suitably windy locations: the local policy environment was a much more important factor. For example, in India in 2004, 57 per cent of wind power capacity was installed in Tamil Nadu which only has 7 per cent of the wind resources (Global Wind Energy Council, World Institute of Sustainable Development and Indian Wind Turbine Manufacturing Association, 2011).