2025 - 26.8 kW modules on 20 kW inverter over 3 roofs
From Jul-2025
Complex solar installation over 3 roofs with Axitec TopCon modules, using an SL-Rack mounting system (roof hooks: 3D SL Alu K) and a 20 kW SMA grid-tied inverter (20kW). The system was planned as a hybrid system, and changed along the course of the project towards an only grid connected system. Frankly, several changes were done over the course, so planning turned out being quite intense. There are some extra modules on the metal roof, connected to the main system with module optimizers (BRC Solar M500), and four almost vertical modules connected to a separate microinverter (Hoymiles HMS-1600-4T). Almosts all physical work was done by Bausteine Renovierungen. Great work.
overview, electrical layout
first roof hook, SL-Rack
first roof (South) with hooks, first rail
second roof (East), only hooks
third roof (West), hooks set in place
third roof (West), all rails set
first and second roof, side view
second roof, first module
second roof, elevated part with trapezoidal metal roof (hooks: SL-Rack)
optimizers for elevated part (BRC solar, M500), DC plugs changed to Stäubli MC4-evo2
first and second roof, all rails set
first roof again (South) before cable installation
