On May 24, 2005, Warren Buffett, the chairman and chief executive officer of Berkshire Hathaway Inc., announced that MidAmerican Energy Holdings Company, a subsidiary of Berkshire Hathaway, would acquire the electric utility PacifiCorp. In Buffett's largest deal since 1998, and the 2nd largest of his entire career, MidAmerican would purchase PacifiCorp from its parent, Scottish Power plc, for $5.1