This document is Bonneville Power Administrations (BPA) 2006 Pacific Northwest Loads and Resources Study, commonly called the White Book. The 2006 White Book is a snapshot as of March 31, 2006, of the Pacific Northwest (PNW) region and the Federal system loads and resources for Operating Year (OY) 2007 through 2016. This analysis incorporates BPAs estimates of PNW total retail loads, contract obligations, contract purchases, and resource capabilities. BPA compiles these estimates with those provided by PNW Federal agencies, public agencies, cooperatives, U.S. Bureau of Reclamation (Bureau), U.S. Army Corps of Engineers (USAGE), and investor-owned utilities (IOUs) through annual data submittals. These combined projections provide projections of the PNW region and Federal system load and resource capabilities for the 10-year study horizon, operating years (OY) 2007 through 2016.