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This paper provides a holistically—yet preliminary—energy and embodied carbon assessment of a residential detached building undergoing major renovation located in Mediterranean climate (Malta). Compared to the base case (Maltese building energy code) chosen strategies cover the building operational energy demand and allowing for residual electrical energy that theoretically avoid the release of 0.54 tCO2eq in the atmosphere, due to roof and wall insulation, calculation of thermal bridges, efficient heating, cooling and lighting systems, domestic water heaters and photovoltaic panels. Furthermore, a drastic reduction (31%) of the unregulated embodied carbon GWP (A1-A3 modules) was obtained due to material efficiency strategies that also enhance envelope U-values (beneficial for OC emission reduction) by salvaging as many as possible building envelope elements (32.54 tCO2eq) as opposed to their complete demolition and reconstruction requiring the release of 47.70 tCO2eq during construction.

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Combined Deep Energy Retrofit and Embodied Carbon of Residential Detached Building: an Early-Stage Assessment in Mediterranean Climate

  • 会议论文

  • 发表日期：

    2026年

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  • Luca Caruso

摘要

This paper provides a holistically—yet preliminary—energy and embodied carbon assessment of a residential detached building undergoing major renovation located in Mediterranean climate (Malta). Compared to the base case (Maltese building energy code) chosen strategies cover the building operational energy demand and allowing for residual electrical energy that theoretically avoid the release of 0.54 tCO2eq in the atmosphere, due to roof and wall insulation, calculation of thermal bridges, efficient heating, cooling and lighting systems, domestic water heaters and photovoltaic panels. Furthermore, a drastic reduction (31%) of the unregulated embodied carbon GWP (A1-A3 modules) was obtained due to material efficiency strategies that also enhance envelope U-values (beneficial for OC emission reduction) by salvaging as many as possible building envelope elements (32.54 tCO2eq) as opposed to their complete demolition and reconstruction requiring the release of 47.70 tCO2eq during construction.