Membership details
Membership organisation:
Registration date: 01-01-1970
Membership ID:
Membership type:
Membership valid for year:
Note: for 3-year memberships, the membership is valid for the year mentioned above and the two subsequent years.
Membership renewal
You can now register for new memberships / renew your membership for the next solar year.
The official starting date will be January 2026, but your membership will be valid as soon as we have received your payment.
New! You can now also subscribe for a 3-year period (2026-2028) – option only available for individual and institutional memberships.
Click on the button below to renew your membership. This will open a new page that will guide you through the update process.