Energy retrofit technologies can significantly reduce global energy requirements and carbon emissions and support policy makers achieve net zero targets. The installation and implementation of these technologies is mostly quite straightforward, however the assessment of their benefits and impacts across the technical, economic, and environmental domains can be very complex and often requires a high degree of stakeholder engagement. The purpose of this paper is to propose a clear and easy-to-follow methodological framework for conducting a techno-economic analysis of energy system retrofit technologies to help reduce this complexity. The proposed framework involves four main stages that involve identifying stakeholders and defining key performance indicators (KPIs), fact and knowledge generation and alignment, decision-making support and finally reviewing and refining the outputs. Two case studies, carried out in the context of the Horizon 2020 Integrated Smart GRID Cross-Functional Solutions for Optimized Synergetic Energy Distribution, Utilization Storage technologies (inteGRIDy) project, were considered to illustrate application of the framework. Associated relevant technical and economic evaluation of performance parameters carried out in accordance with the proposed framework demonstrated that implementation of retrofit technology in these case studies significantly impacted identified stakeholder relevant KPIs, including reduces total energy consumption, peak load, and carbon footprint. Likewise, they improved wider grid adaptability and energy security. The cost-benefit analysis also identified several stakeholder benefits, such as revenues from demand response operations, cost reductions due to local generation, revenues from energy export, and decreased expenses related to reduced carbon emissions. The article concludes that the proposed methodological framework can assist in focusing efforts related to the technical and economic evaluation of energy retrofit technologies onto meaningful indicators which have relevant real-world interpretation for key stakeholders. Overall, it is suggested that the proposed framework can be used as an additional tool to evaluate the impacts and benefits of energy retrofit technologies in a more meaningful way, giving policy makers better insights into deployment and scale-up of retrofit technologies to achieve net zero targets.
Bibliographical noteFunding Information:
The authors acknowledge the support provided by Romain Chomaz (SOREA), Angelina Katsifaraki (TREK), Diana Vaz (AIGUASOL) and other project members in the inteGRIDy project involved in Work Package 8, Task 8.4.
The work presented in this paper was carried out as part of the inteGRIDy project, co-funded by the EU’s Horizon 2020 Framework Programme for Research and Innovation, Belgium under grant No. 731628. The authors wish to acknowledge the European Commission for their support, the efforts of the project partners, and the contributions of all those involved in the inteGRIDy project.
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