Passive House in Alaska Heated By Sun

More Canadian homes need to be built like this to survive coming fossil fuel shortages. It certainly saves a lot of money for the homeowner.

Passive House in Alaska using water insulated in a tank as a giant battery for energy.

The world would have forgotten the Saskatchewan house, too, were it not for a quirky German physicist interested in energy-saving buildings. After studying the Saskatchewan house and a handful of similar buildings, Dr. Wolfgang Feist wrote a mathematically precise — and elegantly simple — criterion for designing buildings that require less than a tenth of the energy of average buildings. He called it the Passivhaus standard.

Feist’s formula has gone viral. There are now more than 25,000 certified Passivhaus buildings in Europe, and thousands more under construction around the world.

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