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This week's Movers & Shakers segment features executive shuffles in energy storage companies and an O&M firm, while examining a new merger between Spain's Gamesa and Siemens Wind Power. Spain's Renewable Energy Association elects a new president for the next four years, and Jon Wellinghoff exits SolarCity amid the US$2 billion Tesla acquisition.

Spain’s Constitutional Court has published the full details of its judgement rejecting appeals against a decrease in feed-in tariffs for renewable energy sources, but the reasoning has been branded “short, superficial and alien to reality” by a legal representative.