Siemens Energy Chief Executive Christian Bruch said this week that the company was looking to exit "peripheral" activities in the supply chain, most notably where it is only a partial owner. Supply chain problems, competition and soaring raw materials prices have made manufacturing wind turbine components challenging in recent years, despite demand from governments banking on wind energy to wean themselves off fossil fuels. Siemens Energy's 32% stake in Windar Renovables, a joint venture with Spain's Daniel Alonso Group, is held via its wind turbine division Siemens Gamesa. Shares in Siemens Energy, which on Monday reported record order backlog of more than 100 billion euros ($110 billion), were 1% higher at 1029 GMT.