Multi-sectoral efforts are required for decarbonising the building sector: a case in Hong Kong

This paper proposes a novel "stage-sector-measure" framework for evaluating carbon mitigation effects in the building sector, using Hong Kong as a case study. The framework links life cycle stages of buildings (material production, transportation, construction, operation, demolition, waste disposal) to contributing sectors (manufacturing, transportation, building, electricity) and specific mitigation measures. Results indicate an 84.4% decrease in Hong Kong's building sector emissions by 2050, with the electricity sector playing the most significant role (71.8% of mitigation effects). Cleaner production of concrete and steel, along with alternative fuel mixes and carbon capture and storage, are highlighted as key measures.

Yihan Wang, Wei Pan