Seasonal Solar Thermal Battery uses dirt, clay, rock or soil to store heat from the summer and use it in the winter via evacuated vacuum tubes and liquid heat injection. It’s the thing to use to grow your own food, no GMO, healthy options!
https://www.dlsc.ca – Drake Landing Solar Community in Alberta
they are providing all heating for over 50 homes via solar heat and a thermal battery for many years now
https://www.youtube.com/user/urbanfarmercstone – The Urban Farmer Curtis Stone
He made a fantastic geo air solar greenhouse at his home
https://www.youtube.com/user/BrightAgrotechLLC – Bright Agrotech talks about geo air greenhouses in several videos
https://www.youtube.com/watch?v=IZghkt5m1uY – Citrus in the Snow is the original geo air greenhouse for cold climates, been working for over 20 years!
https://www.youtube.com/user/LDSPrepper – LDSPrepper just recently built a geo air greenhouse that works and implemented many cost effective methods in the build you can’t ignore
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