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this post was submitted on 14 Feb 2024
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Are you just talking construction costs? How about if you consider the lifetime energy consumption of a building over, I dunno, 50 years? And using zero emission heating, since in 50 years we hopefully are not using fossil fuels for that.
Obviously that's going to vary dramatically depending on the indoor/outdoor temperature delta and future renewable energy costs, so there are too many variables to come up with a number easily, but I could see these bricks being very cheap if you factor int he total cost over the life of the building.
Glass works ok for small windows - but large glass panels are fragile and expensive.
Aerogel is also fragile