Celsios GmbH

Celsios is a German proptech company focused on decarbonization in the real estate sector. Founded by Justus Wiedemann, it provides digital services for building-related emissions reduction. It serves as a marketplace platform connecting asset managers with solution providers across areas such as energy efficiency, photovoltaics, and building systems. Within this structure, tools such as Pathfinder form part of its platform, supporting the exploration and planning of decarbonization pathways across property portfolios.