Siemens Gamesa put its latest financial guidance “under review” and listed an array of ongoing internal and external challenges that contributed to “very low” quarterly orders as clouds darkened around the global wind turbine OEM.

Siemens Gamesa – which on Tuesday announced the sale of 3.9GW of southern European development assets to UK utility SSE for €580m ($627m) – again highlighted internal issues around its onshore wind business as central to its problems.