Mathematical modelling of renewable energy communities for energy-economic assessment
B. Molnar, I. Vokony   Department of Electric Power Engineering. Budapest University of Technology and Economics. Egry Jozsef 18. Budapest – Hungary   2025-07-25

Abstract

The spread of energy communities worldwide has accelerated in recent years. Energy communities also constitute a promising option for the deployment of renewable-based local electricity generation and use in the European Union, which can play a key role in the green transition and in enhancing the security of energy supply.

Energy communities encourage the creation of new concepts and models, which must be defined so that technical feasibility must be matched with organisational sustainability in order to achieve the desired goals. However, the mathematical modelling of energy systems applicable to energy communities and the optimisation of electricity generation, use and sharing for members and the energy community in regards the defined business model are rarely considered.

The aim of the study is to present a detailed mathematical modelling of a renewable energy community based on a given business model, paying particular attention to their synergies. The research also included the integration of optimisation objectives into the mathematical model, which play a key role in the long-term sustainability of renewable energy communities in the Hungarian regulatory environment and in the current economic situation.

Key words: Renewable energy communities, Business model, Mathematical modelling, Energy-economic assessment, Simulation.

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