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05. Dezember 2024
Von der Seite des Verlags (Elsevier / Science direct):
Aus Heliyon, Volume 10, Issue 24, e40800; (Oberle, Stella et al.)
2405-8440/© 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license
( http://creativecommons.org/licenses/by/4.0/ ); https://doi.org/10.1016/j.heliyon.2024.e40800
ABSTRACT:
German energy system studies, investigating the energy transition pathways to the set climate
targets, depict a significant decrease in gas demand. This leads to a discussion about the long-term
need of gas distribution networks. The discussion intensified with the war in Ukraine and the
subsequent energy price crisis. The German regulatory agency responded to these developments
with adjusting the regulatory framework to the current challenges. Up to now, the depreciation
period of network components varies between 45 and 65 years, and consequently the monetary
capital is tied up for a long time, lowering the flexibility of network operators to react to current
challenges. Therefore, the German regulatory agency allows the shortening of depreciation periods
of new gas network assets. Nonetheless, it is still unclear how to deal with existing assets at
risk of becoming stranded assets and how to regulate the decommissioning of gas networks.
Therefore, this paper addresses the research question: “What effect do different regulations for
decommissioning of gas distribution networks have on operators and users?“. To answer the
question the model MERLIN is applied, which integrates the current and future regulation options
into long-term investment decision analysis. The results show a need to shorten the depreciation
period of existing assets to avoid stranded assets. Further, partial decommissioning with including
the decommission costs in the regulatory framework and hence finance it through the network
users, is the most economical attractive option for network operators and users.
