(Bloomberg) Siemens Energy AG is in talks with the German government about securing as much as €16 billion ($16.9 billion) in state guarantees as problems at its wind-turbine unit spread to the rest of the business. Shares plummeted 40%.Most Read from BloombergControversial Chip in Huawei Phone Produced on ASML MachineApple Plans AirPods Overhaul With New Low- and High-End Models, USB-C HeadphonesIsrael Is Losing Support as Fury Grows Over Its Strikes on GazaWhat Happened Inside Morgan Stanle