Sergey Kirienko was born on July 26, 1962 in Sukhumi. In 1984, he graduated from the Gorky Institute of Water Transport. In 1993, Mr Kirienko received a degree in Finance and Banking from the Russian Presidential Academy of National Economy. In 1986–1990, he worked as a foreman at Krasnoye Sormovo Shipyard, headed the regional Communist Youth League committee, and served as CEO of AMK, one of the first commercial companies in Gorky (now Nizhny Novgorod). After that he was elected to the Gorky regional council of people’s deputies. In 1993–1996, Mr Kirienko chaired the Management Board of Garantia Bank and, beginning in August 1994, served on the Presidential Council for Industrial Policy and Entrepreneurship. In 1996–1997, he occupied the office of President of NORSI-Oil prior to being appointed First Deputy Minister in May 1997, and then Minister of Fuel and Energy in November of the same year.
In April–August 1998, Mr Kirienko held the office of Russian Prime Minister. In December 1998, he headed the Novaya Sila (New Force) conservative political movement, and in 1999 was elected a co-chairman and leader of the Souyz Pravykh Sil (Union of Right Forces) election bloc. In December 1999, he was elected member of the Russian Parliament and then was appointed Presidential Plenipotentiary Representative to the Volga Federal District in May 2000. A year later he took the office of Chairman in the Russian Federation Committee on Chemical Disarmament. In November 2005, he was appointed Director of the Federal Agency for Atomic Energy. Since December 2007, Sergei Kirienko has served as Chief Executive Officer of ROSATOM.