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|1 MB

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, you can use the tool to provide the relevant evidence for your CO₂ footprint.

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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 ausbildung@dgnb.de. Click here for the seminar offers.

Reference CO<sub>2</sub> emission factors

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

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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 CO₂emission factors

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

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