Paul and Annett built a self-sufficient, off-grid house in New South Wales with air conditioning and electrical appliances. They use just 25% of the solar energy that their rooftop solar voltaic system is capable of generating. The also have solar-heated water for showers, a biogas digester that turns waste food into combustible gas, and a composting toilet. They also have a 10,000 liter water tank, but Australia has been experiencing drought as of late, so they have to be conservative with their water use.
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