Treehugger reports on an amazing energy efficient house concept that consumes a mere 800Wh (0.8kWh) per day; a small fraction of 45kWh that a typical North American suburban house uses. The article lists some of the electricity saving measures taken by the house, including a dual wiring system for 120V AC and 12V DC appliances and lighting, and use of daylight to minimize electrical use for lighting. The house uses propane gas for the refrigerator and stove, as well as the dryer. Information wasn’t given on what the consumption of the house would be if the propane gas use was taken into account, although it would still be far less than an average house. The same concepts for lighting could be applied to create a very efficient multi-occupant dwelling such as a small apartment building, using fiber optic lighting cables to bring light from the roof into lower units. All things considered, this demonstrates that a very low energy dwelling is not only possible, but very stylish and functional as well.

800 Watt Hours A Day! The Most Efficient Modern House? – via

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Steve holds a degree in Environmental Engineering Technology from Humber College in Toronto, is a LEED Accredited Professional and a Certified Sustainable Building Advisor. He currently lives in Victoria BC and works as a green building consultant specializing in residential projects.


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