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Kittitas County Courthouse Energy Audit <br />.►v <br />5.1 LIGHTING ECM SUMMARY <br />Table 5-1: Lighting ECM Annual Savings <br />Energy <br />Cost <br />Implementation <br />Simple Payback <br />Description <br />Savings <br />Savings <br />Cost <br />(years) <br />y <br />Notes <br />(kWh/yr) <br />($/yr) <br />Light fixture replacement - LED <br />27,818 <br />$2,225.43 <br />$32,200.00 <br />14.5 <br />1,2 <br />Install occupancy -sensing lighting <br />9,587 <br />$766.94 <br />$6,800.00 <br />8.9 <br />1 <br />controls in rooms less than 300 sq ft <br />Exterior lighting controls — <br />899 <br />$71.90 <br />$600.00 <br />8.3 <br />1,3 <br />astronomic timer <br />Notes <br />1. Cost savings based on estimated electricity cost of $0.08 per kWh. <br />2. Implementation cost based on fixture replacement or retrofit by maintenance staff. <br />3. Implementation cost based on one-to-one replacement of existing time clock with no <br />changes to electrical circuits. <br />5.2 ENVELOPE ECMS <br />Table 5-2 Envelope ECM Annual Savings <br />Energy <br />Energy <br />Cost <br />Implementation <br />Simple <br />Description <br />Savings <br />Savings <br />Savings <br />Cost <br />Payback <br />Notes <br />(kWh/yr) <br />(CCF/yr) <br />($/yr) <br />(years) <br />Window <br />5,452 <br />2,180 <br />$3,112 <br />$251,340 <br />81 <br />1,2 <br />Replacements <br />Window <br />4,362 <br />1,090 <br />$1,682 <br />$3,700 <br />2.2 <br />1,3 <br />Glazing - Film <br />Notes <br />1. Cost savings based on estimated electricity cost of $0.08 per kWh. <br />2. Metal -framed windows need to be replaced with double -pane, full -height windows. <br />3. Cost savings based on application of film to existing windows to be installed by <br />maintenance staff. <br />Project Number 22-084 24 <br />October 28, 2025 <br />