FACTBOX-China-Russia energy deals

May 23 (Reuters) - Russia is to build and supply a $1 billion uranium enrichment plant in China, Russia's nuclear chief said on Friday.

The deal will be signed during Russian President Dmitry Medvedev's state visit to Beijing which begins on Friday, said Sergei Kiriyenko, the chief of the Rosatom state nuclear corporation.

The following lists the main energy deals between the two nations.

* May 2007: China Tianwan nuclear Plant started second of its Russian-built reactors of 1.06 gigawatt in eastern Jiangsu province, after the first one of same size started in 2006. Atomstroiexport, building contractor of Russian atomic agency Rosatom, is the supplier and builder. Each plant costs $1.6 billion.

* Nov 2006: Rosneft (ROSN.MM) and China's No.2 oil firm Sinopec Group agreed to build a refinery and a fuel retail network during then Russian Prime Minister Mikhail Fradkov's visit to Beijing. No details of the deal were disclosed.

* July 2006: CNPC is allocated $500 million worth of shares in Rosneft through its IPO, although it placed an order for up to $3 billion worth of shares.

* June 2006: Sinopec Group acquired at about $3.5 billion Udmurtneft, a 120,000 barrels per day crude production unit of BP's Russian vehicle TNK-BP. Under the deal, Sinopec would then sell 51 percent of the asset to Rosneft. Rosneft would pay for its share out of future Udmurtneft revenues.

Sinopec also holds 25 percent stake in Rosneft's Sakhaline-3 Veninsk Block.

* March 2006: During former Russian President Vladimir Putin's visit to Beijing, CNPC and Rosneft agreed to build a 200,000 bpd refinery and jointly operate 300 or more petrol stations. Port city Tianjin, near Beijing, has been picked as the site of the plant, industry sources told Reuters. Companies also set up a joint venture firm Vostok Energy to explore and produce crude oil in Irkutsk region. (Reporting by Chen Aizhu; editing by James Jukwey) (aizhu.chen@thomsonreuters.com; Reuters Messaging: aizhu.chen.reuters.com@reuters.net; +8610 6627 1211)