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Energy saving tip number 8

Choose a zero-energy home…

Zero-energy or ultra-low energy buildings are designed so that, on average, they require little or no energy. It is much easier to design a zero-energy home from the beginning than it is to try to upgrade an existing home.

Using techniques such as earth sheltering, super-insulation, high-efficiency windows, seasonal thermal storage, and other techniques, a building can be designed that requires no additional energy for lighting, heating and cooling. Solar panels can provide the energy required to run appliances and other devices.

https://en.wikipedia.org/wiki/Passive_house

(Image: https://en.wikipedia.org/wiki/File:Earth_house.jpg, CC-BY-SA-4.0)