From the category archives:

AltEnergy

http://www.siei.org/mainpage.html Guy decides to take his off the grid home off of its dependence on backup diesel generator (and because it would be a cool project) Gets some friends together Team ties together solar panels with Electrolyzer (to convert water into 0xygen and Hydrogen), store the hydrogen in a massive tank, and then fuel a [...]

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Found the following on BoingBoing: The Cardboard House — roofed with HDPE plastic — is recycled, recyclable, flat-pack, home-assembled, and comes with a composting toilet and condenses its own water, which doubles as an under-house ballast tank to keep it from blowing over. Very cool. Link to BoingBoing article here. Link to the Houses of [...]

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