[Code of Federal Regulations] [Title 10, Volume 3] [Revised as of January 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR436.23] [Page 424-425] TITLE 10--ENERGY CHAPTER II--DEPARTMENT OF ENERGY PART 436_FEDERAL ENERGY MANAGEMENT AND PLANNING PROGRAMS--Table of Contents Subpart A_Methodology and Procedures for Life Cycle Cost Analyses Sec. 436.23 Estimated simple payback time. The estimated simple payback time is the number of years required for the [[Page 425]] cumulative value of energy or water cost savings less future non-fuel or non-water costs to equal the investment costs of the building energy or water system, without consideration of discount rates. [61 FR 32651, June 25, 1996]