Siemens Energy shares plunge after wind turbine problems deepen

Shares in Siemens Energy, one of the world’s largest wind turbine makers, plunged 30 per cent on Friday after the company warned it may have to spend more than €1bn fixing an array of technical faults.

Jochen Eickholt, chief executive of Siemens Gamesa, highlighted problems with rotor blades and bearings.