The most important is the freedom for design, assured by the system: proportion of transparent/solid surfaces can be determined without compromising microclimate. The same goes for orientation: the system balances any local overheating or cooling down on scale of the whole structure: south areas can heat north sides for example.
This provides and indeal and comfortable microclimate in an easy and effective way.
In addition to thermal comfort, the system is also energy efficient: the panel utilizes the total surface as a “battery” to capture heat load during the whole year to use it in winter. This gives considerable energy savings, because the “heat trap” not only allows cheap heating energy reserves, but also cools the house in summer.