Nexity CDC – Habitat Eiffage
© Dreal
Carbon footprint calculation for buildings
It is acknowledged that reducing GHG emissions from human activities is crucial, and the construction sector, which accounts for a third of these emissions, must play its part.
While numerous initiatives focus on existing buildings, aiming first to reduce energy consumption and then transition to carbon-free energy sources, very few national regulations require the calculation of carbon emissions across a building’s entire life cycle. There are almost no regulatory safeguards in place to limit emissions associated with construction (embodied carbon), unlike those related to energy consumption (operational carbon).
The Low Carbon Building Initiative purpose
There are many discrepancies across Europe in the use of Life-Cycle Analysis (LCA); different indicators, study periods, scopes, and reference areas are used. Building upon key existing standards and frameworks[1], the methodology fostered by LCBI aims to harmonize the measurement and practice of Life-Cycle Analysis across Europe with a pure carbon indicator (kgCO2e/m2), consistent with local regulations.
Addressing this, LCBI has developed a unique method to measure carbon footprints of buildings across their entire lifecycle, with limit values, basis of a certification scheme for low-carbon buildings. This method also aligns with major European standards (Taxonomy, Level(s), CRREM, RICS).
Publicly available on LCBI website, this unified European methodology simplifies the quantification and comparison of building carbon footprints, fostering decarbonization across Europe.
[1] EN15978 (LCA at building level), EN15804 (LCA at product level), instructions and guidance from Level(s).
Thais – Levallois Perret (92) France – 5.600 sqm
Covivio – DGM Architectes
Label BBCA Standard – New Built
© Atomic Graphic
LCBI Certification Scheme
View below video presenting LCBI Methodology and Certification Scheme
Considering the entire life-cycle, LCBI Certification scheme will assess building’s performance on three criteria:
- The embodied carbon (emissions linked to building elements) measured in kg CO2e/m² over 50 years
- The operational carbon (based on energies sources used) measured in kg CO2e/m²/year
Biogenic carbon stored (use of bio-sourced materials) in the building measured in kg CO2e/m²
The LCBI life-cycle carbon rating will be delivered with three exemplarity levels based on:
Completeness of the Life Cycle Analysis
- Achievement of carbon emission thresholds, both concerning embodied carbon and operational carbon