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Kittitas County Detention Center AKANA <br />4.0 HISTORICAL ENERGY CONSUMPTION ANALYSIS <br />The city of Ellensburg provides electricity and natural gas to the Kittitas County Courthouse and <br />Detention Center. Water and sewer services are provided by Kittitas County Public Works. The <br />facility has building -level electrical and natural gas metering. <br />4.1 UTILITY RATES <br />Table 4-1 shows the estimated utility use and cost. <br />Table 4-1 Annual Utility Data <br />Annual Utility Data <br />Building Area (square feet) <br />44,866 <br />Electric Use (kWh/yr) <br />1,352,793 <br />Electric Cost ($/yr) <br />$101,647.80 <br />Natural Gas Use (CCF/yr) <br />13,530 <br />Natural Gas Cost ($/yr) <br />$17,914.34 <br />Water Use (gal/yr) <br />6,136,762 <br />Sewer Discharge (gal/yr) <br />- <br />Water and Sewer Cost ($/yr) <br />$14,544.13 <br />Total Utility Cost ($/yr) <br />$134,106.27 <br />Building Energy Use Intensity (thousand British <br />thermal units/square foot) <br />128.85 <br />Building Energy Cost Index ($/square feet) <br />$2.66 <br />The energy use intensity is 128.85 kBTU/sq ft, which is high for the Northwest. The building <br />energy cost index is 2.66 for natural gas and electricity, which is low for the Northwest. Water <br />usage does not factor into energy -use intensity. Diversity in energy end use is not captured by <br />existing energy -metering capabilities. Therefore, energy consumption for each end use was <br />estimated based on Commercial Buildings Energy Consumption Survey (CBECS) data for <br />similar buildings (U.S. Energy Information Administration 2016b). In addition to using CBECS <br />as a reference for end -use energy consumption, Akana used site observations and engineering <br />judgment to estimate quantities of energy by end use. <br />Project Number 22-084 19 <br />October 28, 2025 <br />