Shared signals: Using existing facility meters for energy savings verification

This article reviews and summarizes techniques for using or sharing signals from existing facility and utility meters for the purpose of verifying energy savings from industrial, institutional and large commercial energy conservation projects. Techniques for sharing or using signals from existing electric, natural gas, fuel oil, steam, steam condensate, boiler feedwater, hot water, and chilled water meters will be described. The techniques and experiences reported in this article are based on the results of the actual in-field installation of energy monitoring equipment in several hundred sites at various locations throughout the United States.