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Passive House in the Woods 
The Passive HouseTM in the Woods is the first certified Passive HouseTM in Wisconsin, and one of the only a few net energy positive and carbon-neutral buildings in the country. It blends economy, ecology, health and durability in ways only Passive House can. System Components     The Domestic hot water system utilizes a 40 sq. ft. Solar Skies collector on the roof to pre-warm water in a 50 gallon storage tank. It is capable of providing over 85% of the hot water used in the home. The 3.68kW solar electric system consists of 16 Sunpower 230 watt modules atop a Wattsun dual axis tracker and uses a Sunpower 4000 inverter. The smaller .84kW rooftop system consists of four Sunpower 210watt modules and uses Enphase inverters. Additional Measures High-Performance building envelope High-Efficiency Ventilation System No boiler or furnace Rain Garden Minnesota Green Star Certification System Designer: Energy Concepts, Inc. System Engineer: Craig Tarr, PE System Installer: Energy Concepts, Inc Date of Installation Completion: September 2010 Anticipated Energy Delivery When Purchased The 2 solar electric systems generate a surplus over the energy consumed on site, avoiding 2.78 tons of C02 annually, and therefore providing carbon neutral operation for a household of two people.
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