Siemens Gamesa, the wind power subsidiary of Siemens Energy AG (<a href="https://www.boerse-frankfurt.de/equity/siemens-energy-ag" target="_blank">ETR:ENR</a>), has signed a deal to sell its power electronics business to Swiss electrification and automation group ABB Ltd (<a href="https://www.six-group.com/en/market-data/shares/share-explorer/share-details.CH0012221716CHF4.html#/" target="_blank">VTX:ABBN</a>) for an undisclosed amount.