Instruments for your CO2 accounting

Determine your status quo as a foundation for systematic optimisation

In order to provide practical support to all stakeholders in the realisation of their climate action, the DGNB provides you with tools to calculate the carbon footprint as a status assessment of your building operations.

Tool|xlsx|English|996 KB

DGNB CO2 accounting tool

The DGNB provides you with a CO2 calculator to help you calculate your carbon footprint. In addition, this tool supports you in the presentation of your building-specific climate action roadmap and the annual review of your CO2 footprint. As part of the DGNB Certification for Buildings in Use, you can use the tool to provide the relevant evidence for your CO2 footprint.

Instructions on how to use the CO2 calculator can be found here. A template for documenting your CO2 accounting is available in German.

The DGNB Academy also regularly offers events that explain in a practical way how to easily and reliably account for the operation of a building. If you are interested, please contact us via e-mail at Click here for the seminar offers.

Document|pdf|English|566 KB

Reference CO2 emission factors

ÖKOBAUDAT data from the February 2020 version, applicable for Germany or similar countries / regions, other CO2 emission factors are available in country specific tools or publications

These factors can also be found in the Framework for carbon neutral buildings and sites. You can find more information on this here.

Criteria for calculation tools to determine energy demand and greenhouse gas emissions

Software tools are important in order to be able to determine the effects of planned measures to reduce emissions. There is no specific tool defined for the determination of the energy demand and the greenhouse gas emissions of buildings or sites.

The criteria which play a role in the selection of the appropriate tool include:

  • conformity with all accounting regulations in the Framework for calculating the ‘absolute annual greenhouse gas emissions’
  • complete accounting scopes: Determining the energy demand with all existing energy supplies within the accounting parameter ‘site’
  • realistic user profile: Individual depiction of operating time, user profile and occupancy intensity
  • realistic weather data: Individual depiction of weather data on a monthly or daily basis according to the requirement, including in a minimal time interval
  • realistic building technology: Possibility to depict the actual effect of supply and regulation systems
  • realistic comfort evaluation: Evaluation of the thermal comfort taking different surface temperatures into consideration as well as the delaying effects of thermal mass on the indoor temperature
  • validated software: The use of a calculation program with verifiable fulfilment of recognised quality standards
  • individualisation: Option to use specific COemission factors

These criteria are taken from the Framework for carbon neutral buildings and sites. Please find further information here.



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Further topics

Your contact

Dr. Kathrin Quante

Manager System Development

Dr. Anna Braune

Director Research and Development

Alice Gerstner

Consultant Certification Buildings In Use