100% renewable energy sources require overcapacity: To switch electricity supply from nuclear to wind and solar power is not so simple -- ScienceDaily

100% renewable energy sources require overcapacity: To switch electricity supply from nuclear to wind and solar power is not so simple -- ScienceDaily: Germany decided to go nuclear-free by 2022. A CO2-emission-free electricity supply system based on intermittent sources, such as wind and solar -- or photovoltaic (PV) -- power could replace nuclear power. However, these sources depend on the weather conditions. Scientists have now analysed weather conditions using 2010, 2012, 2013 and 2015 data derived from the electricity supply system itself, instead of relying on meteorological data.