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IGttitas County Courthouse Energy Audit <br />TABLE OF CONTENTS <br />ABBREVIATIONSAND ACRONYMS....................................................................................................1 <br />DEFINITIONS.............................................................................................................................................. <br />3 <br />1.0 <br />EXECUTIVE SUMMARY.............................................................................................................. <br />6 <br />2.0 <br />BUILDING INTRODUCTION...................................................................................................... <br />6 <br />3.0 <br />EXISTING SYSTEM DESCRIPTIONS AND CONDITIONS.................................................... <br />7 <br />3.1 BUILDING ENVELOPE................................................................................................... <br />7 <br />3.2 MECHANICAL SYSTEMS............................................................................................... <br />8 <br />3.2.1 Heating, Ventilation, and Air Conditioning Systems ....................................... 8 <br />3.2.2 Refrigeration.........................................................................................................10 <br />3.3 ELECTRICAL SYSTEMS................................................................................................11 <br />3.3.1 Electrical Service and Equipment......................................................................11 <br />3.3.2 Backup Power Generation..................................................................................11 <br />3.3.3 Lighting and Controls.........................................................................................11 <br />3.3.4 On -site Renewable Energy.................................................................................17 <br />3.4 PLUMBING SYSTEMS....................................................................................................17 <br />3.4.1 Domestic Water Supply......................................................................................17 <br />3.4.2 Domestic Hot Water............................................................................................19 <br />4.0 <br />HISTORICAL ENERGY CONSUMPTION ANALYSIS..........................................................19 <br />4.1 UTILITY RATES..............................................................................................................19 <br />4.2 ELECTRICAL END -USE DISTRIBUTION.................................................................. <br />21 <br />4.3 NATURAL GAS END -USE DISTRIBUTION.............................................................. <br />22 <br />4.4 WATER END -USE DISTRIBUTION............................................................................. <br />23 <br />5.0 <br />SUMMARY OF ENERGY CONSERVATION MEASURES .................................................... <br />23 <br />5.1 LIGHTING ECM SUMMARY....................................................................................... <br />24 <br />5.2 ENVELOPE ECMS.......................................................................................................... <br />24 <br />5.3 MECHANICAL ECMS................................................................................................... <br />25 <br />5.4 PLUMBING ECMS.......................................................................................................... <br />25 <br />6.0 <br />REFERENCES............................................................................................................................... <br />27 <br />Project Number 22-084 i <br />October 28, 2025 <br />