: Provides technical and economic indicators, including CO2 reductions, payback periods, and energy savings.
: Best for quick estimates before moving to the detailed desktop application. Valentin TSOL Free Download
: You can download a full-featured trial of T*SOL 2026 to test its capabilities on your computer. : Provides technical and economic indicators, including CO2
: A free, simplified web-based Solar Thermal Calculator that requires no download. : Provides technical and economic indicators
: Calculates energy performance across a year with a 6-minute resolution.