Power companies run by billionaire friends Bill Gates and Warren Buffett have chosen Wyoming to launch the first Natrium nuclear reactor project on the site of a retiring coal plant. TerraPower, founded by Gates about 15 years ago, and power company PacifiCorp, owned by Warren Buffett’s Berkshire Hathaway, said on Wednesday that the exact site of the Natrium reactor demonstration plant was expected to be announced by the end of the year.... ...The project features a 345 megawatt sodium-cooled fast reactor with molten salt-based energy storage that could boost the system’s power output to 500MW during peak power demand. TerraPower...