: Provides technical and economic indicators, including CO2 reductions, payback periods, and energy savings.
: For those in education, full 180-day licenses are available for a nominal fee of 90.00 EUR (plus VAT), though this is not strictly free. Key Features of T*SOL
: You cannot save project reports or print during the trial period. Valentin TSOL Free Download
: You can download a full-featured trial of T*SOL 2026 to test its capabilities on your computer.
: Best for quick estimates before moving to the detailed desktop application. : Provides technical and economic indicators, including CO2
: It determines the yield and solar fraction of a system based on your location and basic heat demand.
While there is no permanent "free" version of the full desktop software, you can access the Valentin Software T*SOL toolset for free through a or a simplified online calculator . : You can download a full-featured trial of
: Pre-loaded with over 2,000 global climate data locations and 200+ pre-configured solar thermal systems.