2 types of mounting systems were used here. The Tree-system substructure is knocked into the ground at a certain angle, preventing the system from blowing away and leaking the impervious layer. On the upper part of the mountain is a flat roof system. The temporary cover layer that is there now will be replaced by a permanent layer in the future. The PV system will then have to be removed temporarily. A flat roof system is then easier to remove than a system anchored in the ground.