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XI TLI <br /> CASE STUDY /EXIT <br /> LIGHTS <br /> wg <br /> (From 40 Watt Incandescent to 5.5 Watt LED) <br /> COST ANALYSIS <br /> COST COMPARISONS <br /> Annual (Watts11000) Cost Energy Maintenance Cost 18 changes Total <br /> Watts Hrs KWH KWH Cost/Yr Labor$5 Maerial$2.00 Annual Cost <br /> Exit Light(1) 40.00 8,760.00 350.40 0.08 $28.03 $40.00 $16.00 $84.03 <br /> Exit Light(2) 5.50 8,760.00 48.18 0.08 $3.85 $0.00 $0.00 $3.85 <br /> Difference 34.50 0.00 302.22 0.00 $24.18 $40.00 $16.00 $80.18 <br /> PAYBACK COMPARISONS <br /> Payback Internal Rate <br /> Cost NAS Years of Return <br /> LED Exit Light w/o Battery Backup $65.00 $24.18 2.69 37% note:with energy savings only <br /> $80.18 0.81 123% note:with energy and maintenance savings. <br /> LED Exit Light with Battery Backup $105.00 $24.18 4.34 23% note:with energy savings only <br /> $80.18 _ 1.31 76% note:with energy and maintenance savings. <br /> ' f <br /> ( <br /> Energy Investments that Beat the DOW <br /> is <br />