Capture the overabundant Sun energy during the summer, to then be able to use it in winter to heat the house.

By |2020-01-15T12:04:42+00:00Januar 15th, 2020|Categories: News En, Unkategorisiert|

Everyone has an obsessive secret dream. That of the writer is certainly not the most adventurous: being able to capture the overabundant Sun energy during the summer, to then be able to use it in winter to heat the house...