The Japanese earthquake,combined with aging facilities in the UK and unplanned outages in Germany,caused a general slump in global nuclear generation in 2007 of 3.6%,from 2.8 billion MWh in 2006,according to Nucleonics Week.
U.S. reactors, on the other hand, set a record for output, surging to 843 million MWh and utilizing an average 91% of reactor capacity. National total nuclear generation was 2.4% higher than in 2006 and 2.3% higher than in the previous record year, 2004.Though the total number of operating U.S.commercial reactors (104)remained below 1990 levels, generation was 40% higher than the 577 billion kWh produced in that year.
In 2007, South Texas-
1 in Bay City, Texas had the largest output of any reactor in the world: 12.36 MWh.
The South Texas Project’s South Texas-1 in Bay City, Texas (Figure_1)generated
the largest output of any reactor in the world—12.36 MWh.Constellation Energy’s Calvert Cliffs-1 in Maryland performed the best against promised output levels, exceeding capacity level all year. Seven units closed down in 2007: Bulgaria’s Kozloduy-3 and -4, Slovakia’s Bohunice-1, and the UK’s Dungeness A- 1 and -2 and Sizewell A-1 and -2; only four reactors were added: India’s 220-MW Kaiga-3 , China’s 1,000-MW Tianwan-2 VVER, and Romania’s 706-MW Cernavoda- 2 Candu unit.
The four reactors added 3,100 MW to the grid. The Tennessee Valley Authority also returned to service the 1,155-MW Browns Ferry Unit 1 after 22 years. (See OWER, November 2007, p. 30 for details on the restart of Unit 1.) Last year also saw construction of the most nuclear power reactors in recent years. Five nits were officially launched: the 650-MW Qinshan II-4 and the 1,000- MW Hongyanhe-1 in China, the 1,000-MW Shin Kori-2 and Shin Wolsong-1 in South Korea, and the 1,650-MW Flamanville-3 in France.