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On the Different Fair Allocations of Economic Benefits for Energy Communities

Author

Listed:
  • Gabriele Volpato

    (Industrial Engineering Department, University of Padova, Via Venezia 1, 35131 Padova, Italy)

  • Gianluca Carraro

    (Industrial Engineering Department, University of Padova, Via Venezia 1, 35131 Padova, Italy
    Interdepartmental Center “Giorgio Levi Cases” for Energy Economics and Technology, University of Padova, Via Francesco Marzolo 9, 35131 Padova, Italy)

  • Enrico Dal Cin

    (Industrial Engineering Department, University of Padova, Via Venezia 1, 35131 Padova, Italy)

  • Sergio Rech

    (Industrial Engineering Department, University of Padova, Via Venezia 1, 35131 Padova, Italy
    Interdepartmental Center “Giorgio Levi Cases” for Energy Economics and Technology, University of Padova, Via Francesco Marzolo 9, 35131 Padova, Italy)

Abstract

Energy Communities (ECs) are aggregations of users that cooperate to achieve economic benefits by sharing energy instead of operating individually in the so-called “disagreement” case. As there is no unique notion of fairness for the cost/profit allocation of ECs, this paper aims to identify an allocation method that allows for an appropriate weighting of both the interests of an EC as a whole and those of all its members. The novelty is in comparing different optimization approaches and cooperative allocation criteria, satisfying different notions of fairness, to assess which one may be best suited for an EC. Thus, a cooperative model is used to optimize the operation of an EC that includes two consumers and two solar PV prosumers. The model is solved by the “Social Welfare” approach to maximizing the total “incremental” economic benefit (i.e., cost saving and/or profit increase) and by the “Nash Bargaining” approach to simultaneously maximize the total and individual incremental economic benefits, with respect to the “disagreement” case. Since the “Social Welfare” approach could lead to an unbalanced benefit distribution, the Shapley value and Nucleolus criteria are applied to re-distribute the total incremental economic benefit, leading to higher annual cost savings for consumers with lower electricity demand. Compared to “Social Welfare” without re-distribution, the Nash Bargaining distributes 39–49% and 9–17% higher annual cost savings to consumers with lower demand and to prosumers promoting the energy sharing within the EC, respectively. However, total annual cost savings drop by a maximum of 5.5%, which is the “Price of Fairness”.

Suggested Citation

  • Gabriele Volpato & Gianluca Carraro & Enrico Dal Cin & Sergio Rech, 2024. "On the Different Fair Allocations of Economic Benefits for Energy Communities," Energies, MDPI, vol. 17(19), pages 1-26, September.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:19:p:4788-:d:1485190
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    References listed on IDEAS

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