 On 11 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.Russia's State Atomic Energy Corporation, Rosatom, started site preparation of the two unit VVER-1000 nuclear power plant with a combined capacity of 2100 MWe in September 2016.On 14 March 2017 construction formally started.