C3rro (speak: ze·ro)

is a spin-off of the Fraunhofer Institute for Building Physics (IBP). Aside from creating tools for the design and certification of high performing buildings we enable our clients to provide their own tools and services through a state-of-the-art building science platform.

We are currently in the founding phase.

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What is c3rro?

At c3rro (speak: ze·ro) we want to unleash the full potential of hygrothermal building simulation.

The C3 in c3rro refers to our main services:

  • Coding
  • Computing and
  • Consulting

With our service we want to provide our contributions to a c3rro (zero) carbon future through c3rro (zero) energy buildings with c3rro (zero) durability, comfort or air quality issues.

As a Bavarian company we like to celebrate our white and blue C3rrocummulus sky and bring “moisture (simulation) into the cloud” through cloud powered hygrothermal simulation.

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C3rro provides services and products. We help our clients to

  • Program and get software products onto a state-of-the-art web-based building science platform
  • Build up a software-as-a-service model for their own software tools
  • Connect client’s software products with other established building simulation models
  • Combine tools and services into software-as-a-service model run by our clients

We utilize our building science know-how and staff capabilities to provide help, support and education:

  • Project specific consulting
  • Customer centered web and in-house seminars
  • First and second level support for software end-users

C3rros products are building and component hygrothermal simulation modules and Passive House certification modules powered by WUFI® technology from Fraunhofer IBP:

  • Cloud based hygrothermal building component and building simulation with integrated Passive House certification to improve workflows
  • Building information modelling (BIM) integrated and high-performance computing (HPC) simulation to shorten execution time
  • Unified data model with segment specific user interface (UI) to reduce complexity and increase availability and collaboration

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With a combined experience of more than 50 years of building science software programming and distribution the team is aware of the challenges for functional and easy to use software tools in the industry


management lead


technical lead


cloud lead

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