Costly failures at wind turbine manufacturer Siemens Gamesa last month sent shares of parent company Siemens Energy tumbling, and analysts are concerned about wider teething problems across the industry.The German energy giant scrapped its profit guidance in late June, citing a “substantial increase in failure rates of wind turbine components” at its wind division Siemens Gamesa.Siemens Energy CEO Christian Bruch told journalists on a call Friday that “too much had been swept under the carpet” at Siemens Gamesa and that the quality issues were “more severe than [he] thought possible.”Siemens Energy stock plunged by around 37% on June 23, while other wind companies also saw shares retreat as investors worried that the problems at Gamesa might be a symptom of a wider issue for the industry.Nicholas Green, head of EU capital goods and industrial technology at AllianceBernstein, told CNBC that the pace of expansion, and the fact that many components of larger turbines haven’t actually been in use for very long, means there could be inherent risk …
