InvestmentsTop Global NewsMarketsReal Estate Siemens to buy Iberdrola’s stake in Siemens Gamesa By financialnews_rlv83x - February 4, 2020 0 133 Siemens is buying Iberdrola’s stake in Siemens Gamesa renewable energy , the German engineering company said, as it prepares to merge the business with its own energy unit ahead of a floatation later this year.