Vela Solaris AG

Vela Solaris is a leading provider of simulation software for the renewable energy sector. Polysun, a simulation software developed by Vela Solaris, provides invaluable support in the analysis, design and calculation of heating and cooling systems using renewable energy. Polysun has been specifically created for solar thermal energy, photovoltaics, heat pumps, geothermal energy and solar cooling. The Vela Solaris’ product range incorporates extensive research activities in cooperation with universities and the industry as well as providing the opportunity to customise the software (company versions as stand-alone or online versions).

Company details

Stadthausstrasse 125 , Winterthur , CH-8400 Switzerland

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Our Distributors

Business Type:
Software vendor
Industry Type:
Energy - Renewable Energy
Market Focus:
Globally (various continents)
Year Founded:

Vela-Solaris Software to design and implement efficient, innovative and comprehensive energy concepts: a sustainable push towards a better environment of tomorrow!.


We feel responsible for doing our bit for a clean future. Our software products facilitate the design and implementation of efficient, innovative and comprehensive energy systems. Together, we create the next steps leading to a future of sustainable energy.

Our values

We co-operate closely with universities and manufacturers. Together with our partners, we constantly work on the further improvement of our software solutions and update them several times a year. We work hard for good software – starting before the first line of code and until after the last one.


We don’t just work in the „sustainable business“. In our day-to-day-lives, we strive to use the resources available to us in a sustainable way as well. We prefer using public transport or non-motorized traffic for our transportation needs. Our electricity comes from renewable sources. Our brochures and business cards are printed without water and without chemicals or volatile organic compounds.