User-based licensing of Polysun

In March 2026, Polysun will introduce a new, user-based licensing model. While the extensive simulation options will remain unchanged, this will significantly simplify activation and licence management for all our users.

The new license portal will be available from March 2, so that IT and license administrators can prepare everything for a smooth transition.

From March 9 and Polysun version 2026.3 or higher, the new user-based licensing will then be available to all users.

Please note that you must first register (Registration = “Sign up”) using the link at the bottom of the login page. Your license should already have been entered by your administrator or by us as part of the migration process—if not, our support team will be happy to assist you. Only then can you log in using your username and the password you set during registration (Log in = “Sign in”)

For a transitional period, the previous licensing system will continue to run in parallel to enable a smooth and uninterrupted transition for all users.

All necessary information can be found on the following pages:

• Guide for switching to the user-based licensing system
• Guide for IT administrators
• Causes and solutions for startup and connection problems