Great Barrier House, built by Crosson, Clarke and Carnachan in New Zealand's Great Barrier Island, is a sustainable solar-powered home constructed of sustainably-sourced timber in deference to its ecologically-sensitive island surroundings.

Despite its open frame and floor plan, Great Barrier House maintains a comfortable temperature all throughout the year, thanks to the low E glass that provides reliable insulation no matter the season.

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Most impressive: The fully solar-powered home has had as many as nine laptops in use simultaneously, all without ever making use of the backup generator that is on hand just in case.

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The fireplace, Inhabitat reports, has been used only once by the client—to generate ambience rather than for warmth!

[Inhabitat]