Sverige - Klimatdeklaration av byggnader

Klimatdeklaration tool (Included in all Swedish licenses) is used to calculate the global warming potential impacts from the construction phase of a building. The results of your calculations with this tool can be used for purposes of the new law on climate declaration for new buildings, enforced in the beginning of year 2022.

The life cycle stages included in climate declaration are manufacturing of materials (A1-A3), transportation of materials from manufacturing site to the construction site (A4) and construction process (A5).

Materials included in the scope:

• Load-bearing structural parts, such as load-bearing walls, columns, beams and joists.
• Building envelope, elements that consist of one or more layers isolating the interior of a building from outdoors.
• Interior walls, also walls that are not load-bearing.

Materials excluded:

• Earthworks, installations and fixed furnishing
• Internal surface layers of envelope, load bearing structural parts or interior walls

1 - Create a project and select the right calculation tool

Create a building project and select the Klimatdeklaration av byggnader tool as the chosen calculation tool.

2 - Create your first design and set up the LCA parameters if needed

NOTE: LCA parameters do not affect Klimatdeklaration tool at all. If you are using additional tools aside Klimatdeklaration on your project, set the LCA parameters accordingly.

If you use only Klimatdeklaration tool in your project you can choose 'Use default LCA parameters' to skip this phase.

3 - Check mandatory scope

Check the mandatory scope of required elements from Boverket guidance.

4 - Fill in the building area

Fill in the Building area question form by entering the Bruttoareal (BTA), Sweden of the building.

5 - Input data for construction site operations

Add the construction site electricity, district heat and fuel consumptions to their respective sections in the question form using the Boverket energy data sets.

6 - Input required material data

Fill in your project information in One Click LCA by entering the design either manually or by import your data (see different import options here; guidance for data import can be found here). If you need help finding the right datasets for your building materials, check our guidance pages here and here.

Use EPD data where available. If there is no EPD published from the specific product, choose a generic material from Boverket database instead. Default transportation and material wastage are automatically added for both Boverket and EPD material data. However, more accurate project specific values can be added and data source changed to 'Specifika Klimatdata'.

After importing or manually adding the material data, set the following parameters for each material in the 'Building Materials' query:

• Choose the correct building part classification for each material from the 'BSAB Byggdelar' dropdown menu. This can be done also within the import process. This parameter is used for showing the results per building part in the result graphics.
• Specify the correct building part from the 'Byggnadsdel' dropdown menu.
• Set the transportation distance and method from manufacturing site to the construction site of each material. Adjust the data source if needed.
• Set the wastage data of each material. This refers to the additional quantity of each material that goes to waste during construction phase. Adjust the data source for Boverket data if needed.
• Document the sources of transportation and site waste data for each material. If you have used Boverket default values for these parameters, select 'Generiska klimatdata' from the dropdown menu. If you have used project specific data or data from the EPDs, select 'Specifika klimatdata'.

7 - Building Information (optional query)

Fill in this optional query to generate a XML file which has all the information what is needed for submitting a Climate Declaration. Only the inputs relating to scope coverage affect calculations.

• Building area - Add the building type and "Bruttoarea" For buildings with mixed-use, provide the area of  all the different building types.
• Building part areas - Fill in the information which is relevant to your building.
• Acoustic and Energy Class - Fill in the information which is relevant to your building.
• Scope coverage definitions - Based on the section input, the scope coverage rate (täckningsgrad) is calculated. The calculation is based on mass of materials and 2 different alternative parameters.
  • 'The user-defined' ratio uses % as a basis for the calculation. One should add the share of materials the user has included in the 'Building Material' query (for example 90% of the total materials of the building) and this percentage is used to scale the mass and emissions accordingly to cover emissions of a full mandatory scope of the building.
  • 'Material mass for full scope' uses the total mass of building as the basis for the calculation. One should add the total mass of the building as an input (in kg/tonne). The calculation is then based on the mass of the materials in the building materials query.

• Mass ratios of load-bearing elements - Select calculation method for XML export

  • The automatic export automatically calculates the share of different material types and adds the mass ratios in the Boverket submission. The share of different load-bearing material types can also be seen in the result page. Please note that in Boverket these values are rounded to the closest tenth.
  • If one selects Manual Selection, you should input the share of different material types for load-bearing building parts to sections 6 and 7. These values will then be used in the XML file export. Please note that the result page results will still show the automated calculation results based on the user inputs in the 'Building Materials' query.

8 - Review the results and download the results report in XML or Excel format

Navigate to the results page either from any input query page of your project or by opening the input menu of the desired design and choosing 'View results'.

The main results table shows the global warming potential impacts in kg CO2e broken down in different life cycle stages. If any Boverket materials have been used, conservative values are used in this table. One  should use the results from this table if you are submitting results to Boverket registry.

'Additional results with average values for Boverket data' shows results if average data is used for Boverket materials instead of conservative values.

The table 'Data sources GWP %' shows the share of EPDs, Boverket and other data used in the calculations in percentage of total global warming potential.

The XML file for submitting your results to Boverket can be downloaded from the top of the results page under 'More actions' menu.

Also the full results report can be downloaded from the  'More actions' menu. Choose 'One Click LCA results report' to open the material level results table in a separate window. This table can then be downloaded in Excel format for results reporting.

If you cannot find the answer to your question from this article, you can contact the support for further guidance.