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Unintended consequences: The snowball effect of energy communities

Ibrahim Abada, Andreas Ehrenmann and Xavier Lambin

Cambridge Working Papers in Economics from Faculty of Economics, University of Cambridge

Abstract: Following the development of decentralized generation and smart appliances, energy communities have become a phenomenon of increased interest. While the benefits of such communities have been discussed, there is increasing concern that inadequate grid tariffs may lead to excess adoption of such business models. Furthermore, snowball effects may be observed following the effects these communities have on grid tariffs. We show that restraining the study to a simple cost-benefit analysis is far from satisfactory. Therefore, we use the framework of cooperative game theory to take account of the ability of communities to share gains between members. The interaction between energy communities and the DSO then results in a non-cooperative equilibrium. We provide mathematical formulations and intuitions of such effects, and carry out realistic numerical applications where communities can invest jointly in solar panels and batteries. We show that such a snowball effect may be observed, but its magnitude and its welfare effects will depend on the grid tariff structure that is implemented, leading to possible PV over-investments.

Keywords: Energy communities; Cooperative game theory; Non-cooperative game theory; Decentralized power production; Consumer participation; Micro-grids (search for similar items in EconPapers)
JEL-codes: C61 C71 C72 D61 O13 Q42 Q49 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ene and nep-gth
Date: 2018-04-18
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