Optimal PV Sizing and Demand Response in Greek Energy Communities Under the New Virtual Net-Billing Scheme

Ioanna-Mirto Chatzigeorgiou (), Dimitrios Kitsikopoulos, Dimitrios A. Papadaskalopoulos, Alexandros-Georgios Chronis, Argyro Xenaki and Georgios T. Andreou ()
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Ioanna-Mirto Chatzigeorgiou: Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Dimitrios Kitsikopoulos: Department of Spatial Planning and Development, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Dimitrios A. Papadaskalopoulos: Department of Electrical and Computer Engineering, University of Patras, 26504 Patras, Greece
Alexandros-Georgios Chronis: Department of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
Argyro Xenaki: Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Georgios T. Andreou: Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Energies, 2025, vol. 18, issue 19, 1-25

Abstract: Energy Communities have emerged as a key mechanism for promoting citizen participation in the energy transition. In Greece, recent legislation replaced the virtual net-metering scheme with a virtual net-billing framework, introducing new economic and regulatory conditions for shared renewable energy investments. This study develops an optimization tool for determining the optimal PV system size and Demand Response actions for individual EC members under this new framework. The model is constructed to align closely with the current regulatory and legal context, incorporating technical, economic, and policy-related constraints. It uses real electricity production and consumption data from existing Greek ECs, as well as 2024 Day Ahead Market prices, grid fees, and surcharges. The results emphasize the importance of customized sizing strategies and suggest that policy refinements may be needed to ensure equitable participation and maximize community-level benefits.

Keywords: optimization; virtual net-billing; Greece; demand response; flexibility; energy communities (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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