An 8-kW solar array powers the majority of the home's annual energy use, while a five-ton geothermal system provides mechanical heating and cooling. A 30,000-gallon rainwater collection system feeds the home with 200 gallons of purified water daily. Search “kw 대전오피【opinfo55.com】인천오피 선릉셔츠룸 오피일번지 건마” from A Stellar Sustainable Home Is Built on a Surprisingly Low Budget

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An 8-kW solar array powers the majority of the home's annual energy use, while a five-ton geothermal system provides mechanical heating and cooling. A 30,000-gallon rainwater collection system feeds the home with 200 gallons of purified water daily.