Since nuclear power generated almost a third of the electricity in Germany, many thought that the country would have to import energy as the nuclear phase-out progressed. At first, Germany was still selling more electricity than it bought, due to its renewable energy industry. Renewable energy supplied a record 20.8% of Germany’s electricity in the first half of 2011, from wind power, solar power, biomass and hydro. Germany installed over 7,400 MW of solar in 2010 and another 7,000 MW was added in 2011. Solar and wind capacity is expected to grow by 32% from 2012–2013. Since 2011 the price of electricity has risen by 20% and as of 2018 the cost of electricity in Germany is the 10th most expensive compared to other countries in the world.