Towards Zero: A Review on Strategies in Achieving Net-Zero-Energy and Net-Zero-Carbon Buildings

Towards Zero: A Review on Strategies in Achieving Net-Zero-Energy and Net-Zero-Carbon Buildings

2 June 2024 | Hoi-Lam Lou * and Shang-Hsien Hsieh *
This systematic review explores strategies for achieving net-zero-energy (nZEB) and net-zero-carbon (nZCB) buildings, emphasizing the role of embodied carbon assessments and life cycle assessments (LCAs). The study identifies three major areas: multidisciplinary approaches, energy systems, and governance, covering thirteen subfields. Key findings include the growing global interest in nZEBs and nZCBs, the importance of balancing energy efficiency with sustainability, and the need to assess the impact of design on emissions and economic outcomes. The research highlights the significance of embodied emissions in the entire life cycle of buildings, alongside operational emissions. It also discusses the role of renewable energy technologies, innovative materials, and energy-efficient design strategies in achieving nZEBs and nZCBs. The study reviews case studies and existing research, identifying gaps and priorities for future research. The methodology involved a systematic literature review of 64 papers published between 2013 and 2024, using keyword co-occurrence analysis, publication statistics, and qualitative content analysis. The results show that nZEBs and nZCBs require a comprehensive approach, considering both operational and embodied emissions. The study also emphasizes the importance of life cycle assessments in evaluating the environmental impact of buildings and the need for standardized frameworks to guide the implementation and assessment of nZEBs. The findings suggest that future research should focus on balancing energy efficiency with sustainability, assessing the impact of design on emissions and economic outcomes, and developing comprehensive frameworks for the large-scale adoption of nZEB standards. The study concludes that nZEBs and nZCBs can significantly reduce environmental impact in the building sector, but require careful planning, innovative materials, and a holistic approach to energy systems and governance.This systematic review explores strategies for achieving net-zero-energy (nZEB) and net-zero-carbon (nZCB) buildings, emphasizing the role of embodied carbon assessments and life cycle assessments (LCAs). The study identifies three major areas: multidisciplinary approaches, energy systems, and governance, covering thirteen subfields. Key findings include the growing global interest in nZEBs and nZCBs, the importance of balancing energy efficiency with sustainability, and the need to assess the impact of design on emissions and economic outcomes. The research highlights the significance of embodied emissions in the entire life cycle of buildings, alongside operational emissions. It also discusses the role of renewable energy technologies, innovative materials, and energy-efficient design strategies in achieving nZEBs and nZCBs. The study reviews case studies and existing research, identifying gaps and priorities for future research. The methodology involved a systematic literature review of 64 papers published between 2013 and 2024, using keyword co-occurrence analysis, publication statistics, and qualitative content analysis. The results show that nZEBs and nZCBs require a comprehensive approach, considering both operational and embodied emissions. The study also emphasizes the importance of life cycle assessments in evaluating the environmental impact of buildings and the need for standardized frameworks to guide the implementation and assessment of nZEBs. The findings suggest that future research should focus on balancing energy efficiency with sustainability, assessing the impact of design on emissions and economic outcomes, and developing comprehensive frameworks for the large-scale adoption of nZEB standards. The study concludes that nZEBs and nZCBs can significantly reduce environmental impact in the building sector, but require careful planning, innovative materials, and a holistic approach to energy systems and governance.
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