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Photovoltaic Panels to generate electricitySix “banks” total 6.6kW = powers this house and charges a Nissan Leaf.
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PV system Cost $51,000 (2009-2011) Less $15,000 from the Energy Trust of OR Less $12,000 OR Tax Credit Less $12,000 Fed. TaxCredit = $12,000 out of pocket cost.
Note Metal Roof. RequiredFor Rain Water Collection
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Solar Collectors for Hot WaterTwo 3’ X 7’ collectors.This system cost about $750 for materials (used collectors)4 hrs of sun = 50 gal of 1300 H2O
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GE Geospring Heat Pump Water Heater
• Heat Pump Water Heaters will be in nearly all homes in ten years. The improvement in efficiency is amazing. My new 50 gallon Geospring uses 40% the energy of my old 40 gallon high efficiency traditional electric heater. AND the state of Oregon will give you a huge tax credit to install one. I paid $700 (a special deal) for mine and got a $500 tax credit.
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Rainwater Collection in Corvallis
• Cook’s roof = 2700 square feet of surface (house and garage)
• 1700 gallons of water collected from 1 inch of rainfall
• Corvallis receives about 45 inches rain/year• Total annual rainwater collection possible
from Cook’s roof = 76,500 gallons.
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Rainwater Collection
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Getting Rainwaterto the sump
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55 gallon “sump”→
Float SwitchControlled pump→
←OverflowTo street
↖Inflow←from roof
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Two 1550 gallon tanks
Filler line→.
←Overflow line
Outflow line ↑