 Small-scale rooftop turbines suffer from turbulence and rarely generate significant amounts of power, especially in towns and cities.In July 2012, a new feed-in tariff approved by Japanese Industry Minister Yukio Edano went into effect, promising to boost the country's production of wind and solar energy production.The country is aiming to increase renewable energy investment in part as a response to the Fukushima radiation crisis in March 2011.