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Modern panelizing and optimization techniques for renewable energy projects; perspectives on how CO2 emissions impact the circular economy

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  • Zheng, Xiumin
  • Imran, Muhammad
  • Umair, Muhammad
  • Lin, Chen
  • Dong, Yue

Abstract

The transition towards renewable energy is critical for addressing global climate challenges, yet achieving optimal integration and minimizing CO2 emissions remain significant barriers to sustainability. This study investigates the role of advanced panelizing and optimization techniques in renewable energy projects, focusing on their potential to mitigate CO2 emissions and enhance the circular economy across ten countries: the United Kingdom, United States, China, Canada, India, Germany, Japan, Russia, Korea Republic, and Iran, over the period 1990–2024. The primary aim is to evaluate how CO2 emissions interact with renewable energy integration, resource efficiency, and waste minimization to foster a sustainable circular economy. Using a robust methodological framework, the study employs Hurlin causality evaluation to assess causative relationships, Dumitrescu's heterogeneous panel analysis for variability across regions, and panel-based fully modified least-squares methods to ensure consistency and reliability in long-term analysis. The findings reveal four key insights: (1) Renewable energy adoption significantly reduces CO2 emissions, particularly in high-emission economies like China, the United States, and India. (2) Circular economy initiatives are positively correlated with renewable energy use, with European nations like Germany and the United Kingdom demonstrating the strongest synergies. (3) Technological advancements in renewable energy yield more substantial emission reductions in developed nations, while emerging economies show slower but steady progress. (4) A decoupling effect between economic growth and CO2 emissions is observable in most countries, but remains limited in energy-intensive economies such as Iran and Russia. These results underscore the need for policymakers to incentivize renewable energy innovation, prioritize circular economy frameworks, and establish region-specific strategies to accelerate the transition towards a low-carbon, resource-efficient future.

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  • Zheng, Xiumin & Imran, Muhammad & Umair, Muhammad & Lin, Chen & Dong, Yue, 2025. "Modern panelizing and optimization techniques for renewable energy projects; perspectives on how CO2 emissions impact the circular economy," Energy, Elsevier, vol. 323(C).
    • Handle: RePEc:eee:energy:v:323:y:2025:i:c:s0360544225015233
    DOI: 10.1016/j.energy.2025.135881
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