What is the Lithuanian LCA Calculator?

The Lithuanian LCA Calculator is a digital tool for assessing the life-cycle Global Warming Potential (GWP) of buildings. It supports the calculation of GWP total across relevant building life-cycle stages and is designed to provide a transparent and consistent basis for whole-life carbon assessment.

To perform an assessment, the calculator uses information about:

• building and project characteristics;

• material quantities and the Bill of Materials (BOM);

• environmental emission factors for construction products and materials;

• transport, construction, replacement, operational energy and end-of-life parameters, where applicable.

The calculator applies GWP total emission factors and is being developed in alignment with European life-cycle assessment principles, including EN 15978, Level(s) and the life-cycle GWP requirements of the Energy Performance of Buildings Directive (EPBD).

The tool is developed within the SUSTAINOVATE-DSS project to support building designers, researchers, public authorities and other stakeholders in evaluating and reducing the life-cycle climate impact of buildings in Lithuania.

The assessment process follows the main stages of the building life cycle: production, construction, use and end-of-life.

The calculator is intended to support both early-stage design comparisons and more detailed life-cycle GWP assessments as project information becomes available. Results should be interpreted in relation to the selected data sources, assumptions and calculation method, which are documented within the tool.