Ways to implementation of whole life cycle base net zero greenhouse gas emission of buildings: Implementing net zero emission buildings
Resumo: The latest IPCC report (AR6) clearly states the remaining greenhouse gas budget of 500GT and calls for rapid emissions reduction for all sectors. With a share of 37% of the global energy related GHG emissions, the construction and operation of buildings as part of the construction and real estate sector is key in reaching these targets.
In order to realise the mitigation potential in both the operational and embodied parts of GHG emissions from buildings, taking into account their interactions, a transition is needed to capture, assess and influence the full life cycle of buildings. This requires, among other things, the further development of design targets for buildings in the clients brief, the integration of this issue into the design and decision-making process using appropriate methods and tools, and the development and introduction of corresponding legal requirements. A prerequisite is the existence of robust, more directional and user-friendly methods for assessing and reporting GHG emissions and other environmental impacts during the life cycle.
In the IEA EBC Annex 72, which is currently being finalized, the aim was to provide an overview of the current assessment approaches (especially focusing on Life Cycle Assessment methods - LCA) and to provide suggestions for the methodologies further development and harmonization. During the work, several topics have been identified that have a big impact on the assessment of possible solutions on how to achieve net zero emissions in the construction and real estate sector. Rules and recommendations have been developed for these topics. These must now be reviewed in terms of their practicality and implemented.
The implementation of the harmonised approaches in combination with practical strategies that should lead to the rapid decarbonisation of the building and real estate sector should be a priority since without this it will not be possible to limit the temperature increase to 1.5 degrees Celsius by 2050 (IPCC). Therefore, a new follow-up annex should be launched to build upon the harmonized methodology proposed by IEA Annex 72. The new annex aims to support decision makers in fulfilling decarbonisation roadmaps for single buildings and whole building stocks and policy makers in future proof legal requirements.
This gives rise to the following questions:
How can methodological principles and assessment tools be further developed to full application maturity and become generally accepted aids?
What are the requirements for action for investors/builders and planners?
How and WHERE should requirements for limiting GHG emissions in the life cycle be integrated into the legislative process and what interactions arise with energy codes, among others?
Should specific requirements for limiting embodied impacts (especially embodied carbon / upfront impacts) be developed?
Data de início: 17/01/2023
Prazo (meses): 60
Participantes:
Papel |
Nome |
|---|---|
| Coordenador | MARISTELA GOMES DA SILVA |
