T SOL is a simulation program that allows you to accurately calculate the yield of a solar thermal system dynamically over the annual cycle. 
With T*SOL Pro you can optimally design solar thermal systems, dimension collector arrays and storage tanks, and calculate the economic efficiency. All relevant systems and company systems Components: combination tanks, buffer tanks, domestic hot water supply, heating support, swimming pools, process heating, air collectors One or two collector arrays.
Climate data for 8,000 locations worldwide and your own climate data Photo Plan: dimensioning and photorealistic presentation of the potential solar thermal system on the roof Projects with multiple system variants Solar fractions for heating and domestic hot water shown separately User groups: sollar installers, designers and heating engineers T*SOL Pro offers you around 200 preconfigured systems and extensive automatic design assistance. And you can of course also enter all the technical parameters individually.

Price T*sol*pro (2017) : from 895 €
T*SOL pro website