Historical Organization
Rosatom
Rosatom
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Organization Timeline
Bushehr pre-commissioning tests demonstrate progress
📅 25 February 2009Iranian and Russian officials oversaw pre-commissioning tests at Bushehr, a visible step toward bringing Iran’s Russian-assisted nuclear power plant into operation.
Russian fuel loading process begins at Bushehr
📅 21 August 2010The process of loading Russian fuel at Bushehr began under IAEA supervision, advancing Iran’s first nuclear power reactor toward operation.
Bushehr holds a commissioning ceremony after Russian-assisted construction
📅 12 September 2011Bushehr’s commissioning ceremony marked a major stage in Russian-assisted nuclear construction in Iran. The milestone followed years of work and delays; it should be distinguished from initial grid...
Iran and Russia sign nuclear expansion agreements
📅 11 November 2014Iran and Russia signed nuclear construction agreements in Moscow, including a contract for two additional Bushehr units and a wider framework envisaging further reactors.
Bushehr expansion begins with groundbreaking ceremony
📅 10 September 2016Iran and Russia held a groundbreaking ceremony for the Bushehr II nuclear expansion, advancing the two additional reactor units contracted in 2014.
First concrete is poured for Russian-assisted Bushehr unit 2
📅 10 November 2019Iran began pouring first concrete for Bushehr unit 2 in cooperation with Russia, moving the nuclear expansion beyond the earlier groundbreaking ceremony.
Putin addresses security of Russian staff at Bushehr
📅 20 June 2025At the St Petersburg economic forum, Putin discussed Russian specialists working at Iran's Bushehr nuclear site and efforts to secure their safety amid the conflict.
Rosatom and Iran sign a memorandum on small nuclear plants
📅 24 September 2025Rosatom and Iran’s Atomic Energy Organization signed a memorandum of understanding on cooperation to build small nuclear power plants in Iran. The memorandum set a cooperation pathway; it was not...