Before the first screw, the study.

• Solar irradiation study — Monthly irradiance assessment, local shadows (trees, buildings), actual roof orientation.
• Production simulation — PVSyst software, calculation of expected monthly kWh over 25 years.
• Sizing — Panel power, inverter, wiring, battery, switchboard adaptations.
• Economic study — Payback time, self-consumption rate, grid feed-in account, ROI.
• Structural audit — Floor capacity, water-tightness, ventilation.
• Administrative procedures — Building permit, grid operator notification, Pronovo, cantonal subsidy files.

Federal, cantonal, communal, fiscal: three to five funding sources accumulate in French-speaking Switzerland. Our experts compile your file at each office, at no additional cost.

Even if the project is complex (multiple owners, collective self-consumption, old buildings), we know the mechanisms to obtain the maximum contribution.

Our pre-study is always free and without commitment. You receive within 15 days a detailed document with production simulation, subsidy calculation and amortisation study.