calculate for free
Discover in 4 steps your roof's energy output, payback time, and available subsidies.
From consultation to installation
Simple, transparent, and worry-free just like a mobile subscription.
Free & no obligation
Optimized throughout Switzerland for the most cost-effective result
Precise forecast of electricity production and amortization
Suitable for all buildings
Free & no obligation
Optimized throughout Switzerland for the most cost-effective result
Precise forecast of electricity production and amortization
Suitable for all buildings
What you will receive
Our non-binding indicative offer includes the most important information about:
Why FreeState?
Experience
15,000+ installed systems
Local presence
Service teams across Switzerland
Comprehensive service
Consultation, financing, installation & maintenance
Exclusive tariffs
Electricity revenue thanks to FreeState ONE exclusive tariffs
Up to 60% lower energy costs
SolarFree connects your solar system, storage, heat pump, and EV, using AI to maximize self-consumption and sell surplus power at the best rate.
FAQ about the solar calculator
It analyzes location, roof orientation, area and slope and gives you a realistic assessment of electricity production, self-consumption and amortization.
Yes, our solar calculator is completely free to use. You receive a non-binding indicative offer with no registration required.
You will receive your personalized indicative offer within minutes of completing the 4-step process in the solar calculator.
Our calculator takes into account all relevant federal and cantonal subsidies, including the one-time payment for solar systems and additional cantonal funding programs.
Most roofs in Switzerland are suitable for solar systems. Our calculator analyzes your specific roof orientation, slope, and area to determine the optimal setup for your building.