 Complete the following phrase:  In March 2011 the nuclear emergencies at Japans Fukushima I Nuclear Power Plant and shutdowns at other nuclear facilities raised questions among some commentators over the future of the renaissance. Platts has reported that the crisis at Japans Fukushima nuclear plants has prompted leading energy-consuming countries to review the safety of their existing reactors and cast doubt on the speed and scale of planned expansions around the world. In 2011 Siemens exited the nuclear power sector following the 