Optimal renewable’s Energy sharing by active Customers

EU electricity market and accelerated reforms of the market design Directive (EU) 2024/1711, which amends Directives (EU) 2018/2001 and (EU) 2019/944introduced a clearer framework for energy sharing and reinforced the role of consumers, communities and aggregations of distributed resources in the internal electricity market [4]. In that context this paper analysed the energy sharing concept from the perspective of operational efficiency and local use of PV generation.

This paper presents a method for optimising the allocation of shares (allocation shares) within the consumer group, i.e. energy community jointly utilizing PV-generated electricity – whether based on collective ownership or cooperative schemes with individual owners/users. Using 15minute load profiles of the participating consumers, the allocation share should be adjusted to maximize the amount of self-consumed PV energy and minimize the power injected back into the grid. The formulation is based on a nonlinear constrained optimisation model in which the objective is to minimise surplus PV injection back to the grid while optimise the allocation of

PV production between energy sharing participants.. The model is tested on four use cases representing different consumption patterns, including household consumers, businesses, and mixed-use scenarios.

The results show that optimised allocation shares maximize PV energy usage while minimizing the amount returned to the grid. Furthermore, the optimisation reveals the portion of PV energy that remains unused under fixed shares, which is relevant when sizing new communities, selecting participants with complementary load profiles, or assessing whether additional 1 Paris Session 2026

August 23 to 28

Palais des Congrès, Paris, France flexibility options should be introduced. In that sense, the proposed method is useful not only for operational allocation, but also for ex-ante design of energy-sharing schemes.

Post-optimisation economic assessment further translates the energy results into monetary effects for participants and bring the perspective of the benefits of participants in the shared energy schemes and give the participants additional information to support their investment decision.