Romania, Hungary, France... Europe's nuclear power plants tested by heatwave

Record low water levels in Europe's major rivers have ​reduced electricity output and shrunk company earnings, stoking fears about the economic impact of searing heat and erratic rainfall.

Governments across Central and Eastern Europe are taking steps to conserve electricity and avert an energy crisis as record low water levels on the Danube River have forced power plants to the brink of shutting down.