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Off-grid cob house Go to and use code EXPLORINGALTERNATIVES to get a 2-year plan plus 1 additional month with a huge discount. It’s risk free with Nord’s 30 day money-back guarantee! The Stoltz Bluff Eco-Retreat is a monolithic cob house that’s completely off-grid. It has a 1-kilowatt solar power system and a backup generator for electricity, a propane radiant in-floor heating system and a Rumford fireplace for heat, and a constructed wetland for natural wastewater treatment. Most cob homes are built with a timber frame structure, and the cob – a mixture of sand, clay, and straw – is used to create the walls. This home is quite different because it’s a structural cob house, so the 2-foot thick walls are load-bearing, and they support the weight of the roof. Since it was built in a seismic zone, the home had to be engineered and built to withstand earthquakes. It was built with curved walls to strengthen the structure, as well as with airplane c
