Well, there is no doubt that it is more difficult to use geothermal energy than solar energy in existing buildings. It is not impossible, but it is much more difficult. It is easy to retrofit a building for solar energy.
In any case, 95% of the projects in which our company is involved are non-residential. You were right. We find that projects that offer a good return on investment are mainly in industry. So what could be described as the low-hanging fruit are really the large industrial and institutional buildings, where the need to heat the air and water is greater.