Rolls-Royce 900 Engine

Rolls-Royce 900 Engine

Chris Ratcliffe/Bloomberg

A deal with jet-engine maker Rolls-Royce Holdings Plc or high-speed TGV train builder Alstom SA would allow Siemens AG Chief Executive Officer Joe Kaeser to expand the Munich-based company’s energy business as he tries to improve profitability and catch up with rivals General Electric Co. and ABB Ltd. of Switzerland.