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OPTIUON 7 <br />PAGE 4 OF 9 <br />T*SOL Energy and Cost/Benefit Analysis: <br />Solar energy consumption as percentage of total consumption <br />2,200 \ <br />2,000 <br />1,800 <br />&a0 <br />4400 <br />Jul AugSep Oat Nov Dec <br />Solar contribution 21,837 kBtu E Total energy consumption 31,751 k8tu <br />SOLAR HOT WATER: Lexington Pool <br />(14) ALS2512 collectors; (2)115 -gal. solar storage tanks. <br />(1)115 gal. stainless steel electric resistance tankfor backup. <br />System Price* $ 29,700 <br />Less estimated AECs sale proceeds (all paid Year 1) $ (3,715) <br />Less 30% Federal Tax Credit (municipality direct pay) $ (8,910) <br />Net Cost $ 17,075 <br />Annual energy offset (estimate) 21.8 mmBTU <br />Solar portion of DHW load ("Solar Fraction") 69% <br />Est. annual savingsys. electric resistance: 6712 kWh <br />Year 1 cash savings: $1,477 (@$.22/kWh) <br />Year 1 cash on cash return: 8.6% (@$.22/kWh) <br />CO2 savings equivalent: 120,816 1bs./20 yrs. <br />Maple/Beech/Birch tree forest equivalent: 3.4 Acres <br />* Notes: <br />-Assumes no extraordinary structural or electrical requirements. <br />-On line Monitoring system not included. <br />-All electric connections, upgrades and permits by others. <br />-Production estimate assumes HW usage avg. 150 GPD @ 1207. <br />-Consult your tax professional regarding Rebates, AECs, and Tax Credits <br />and their impact on your tax return. <br />www.NESHW.com <br />info@a neshw. com / (781) 536 8633 <br />