Taishan 1, world's first EPR connected to the grid. Taishan 1, world's first EPR connected to the grid... On the 29th of June at 17: 59 local time, Taishan 1 reactor located in China became the first EPR* reactor in the world to be successfully connected to the grid... It is operated by TNPJVC, a joint venture established between CGN (51 %), EDF (30 %) and the provincial Chinese electricity company Yuedian (19 %) . The construction of Taishan 1 began in 2009, whilst that of Taishan 2 began in 2010 . These two units were respectively the third and fourth EPR reactors to have started being built worldwide.