I wonder how that would fare in our climate in finland, where the ground freezes and thaws all the time, breaking just about everything we lay in it, including roads, signs, pipes, foundations...
Another issue in Finland is that the average soil temperature (like, a few meters down) is only five or six degrees. But that leave a lot of room for a heating upgrade...
IMHO if you can capture the massive surplus of sunlight in summer and use it in the winter, it would be a major win. Some way to set up a big underground heat reservoir ?
IMHO if you can capture the massive surplus of sunlight in summer and use it in the winter, it would be a major win. Some way to set up a big underground heat reservoir ?