Units of Warren Buffett’s Berkshire Hathaway holdings – including NV Energy, PacifiCorp, and Sierra Pacific Power– were prohibited by the Federal Energy Regulatory Commission (FERC) in a June 9 order (Docket No. ER10-2475-006, et. al.) from selling power at market rates in the PacifiCorp-East (PACE), PacifiCorp West (PACW), Idaho Power, and NorthWestern balancing authority areas.