 In August 2013, the head of Russian nuclear regulator Rosatom said that the state company would soon sign documents transferring operational control of the Bushehr nuclear power plant to Iran, and on 23 September 2013, operational control was transferred.In November 2014 Iran and Russia signed an agreement to build two new nuclear reactors at the Bushehr site, with an option of six more at other sites later.Construction formally started on 14 March 2017.