According to a team of researchers at MIT, both scenarios may be possible before long, thanks to a new material that can store solar energy during the day and release it later as heat, whenever it’s needed. This transparent polymer film could be applied to many different surfaces, such as window glass or clothing.
[...] the new finding could provide a highly efficient method for storing the sun’s energy through a chemical reaction and releasing it later as heat. — news.mit.edu
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