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It looks great. 80k investment to go from 9 months of heating to 6 months. Expensive project, wonder if solar would have yielded more in the north.

Well I think it's as much about happiness as it is energy efficiency. They get to enjoy the outdoors year round.

Isn't a green house a solar collector in some way? They get their heat from the sun, and their main mechanism is simply trapping it in a closed environment.

I think the parent commenter meant to imply buying $80k of solar panels.

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