Completed18 Oct 2026CobraSol · PV

STEMP: trackers on a slope,
planned collision-free.

The STEMP, a four-star superior wellness hotel, wants to generate most of its own power: with a tracker solar plant and battery storage. The plant is built. The real work was in the terrain.

ClientDas STEMP · wellness hotel

Tracker systemCobraSol, Roßbach

Scope3D planning · collision simulation · terrain levelling & earthworks

StatusPlant built · grid connection & storage in progress

Drone flight · finished plant

0Collisions in the final plan

42Tables

21Trackers

2,184Modules

552Ground screws

The terrain is uneven: it slopes, undulates, has dips and humps. That is tricky for trackers, because the tables turn with the sun and are linked by a drive shaft.

The problem

If a table sits higher or at a steeper tilt than its neighbour, the drive shaft can run into the next table's module, or two tables get too close. On a flat meadow this rarely happens; on a slope it happens in many places.

Simulation · shaft cuts module

The solution: simulate and resolve automatically

For this, a system was developed that simulates potential collisions in the 3D model and fixes them automatically:

CheckEvery table is checked against its neighbours and against the drive shaft, with fixed safety clearances.
OptimiseWhen the system finds a collision, it adjusts the tilt and height of the affected tables in small steps until no conflict remains.
Re-planAfter the terrain levelling and after stake-out, the model was recalculated with the new survey data, through to a final plan without collisions.

Terrain levelling

It could not be done without earthworks. Where the terrain is adjusted and how much soil is moved was also planned from the 3D model. The plant was only buildable thanks to this precise 3D planning.