"Nuclear power is no sustainable energy source, it has been a mature technology for decades and is no option to fight climate change," Faymann and his vice Chancellor Reinhold Mitterlehner said in a joint release issued after EU competition commissioner Joaquin Almunia had approved the UK's plan to grant EDF £92.50 per MWh ($148.8/MWh) for the electricity output from Hinkley Point C over a period of 35 years.