Kadri Simson (née Must, born 22 January 1977) is an Estonian politician from the Centre Party, European Commissioner for Energy in the von der Leyen Commission since 1 December 2019. She was previously Minister of Economic Affairs and Infrastructure in Jüri Ratas' first cabinet from 2016 to 2019. In 2015 she unsuccessfully challenged party leader Edgar Savisaar for his role after an almost uninterrupted 25-year tenure. Savisaar won the vote of 541 delegates, to Simson's 486, from a total of 1,051. From 2009 to 2016 Simson was the chairwoman of the Centre Party fraction in the Riigikogu.