Walkthrough Energy Audit Guide The purpose of this guide is to introduce the user, both technical and non-technical, to common opportunities that may be found in an industrial facility to reduce the electrical energy consumption. Download Industrial Audit Guide Conservation Resource Energy Data RED_Book_FY08_FINAL.pdf This is a source document summarizing data on costs and savings pertaining to BPA's energy conservation acquisition programs and resources. The document provides information and references for general audiences and for use in preparing general publications. Fiscal Year 2010 RED Book Fiscal Year 2009 RED Book Fiscal Year 2008 RED Book Fiscal Year 2007 RED Book