The role of transmission and energy storage in European decarbonization towards 2050

This paper presents analyses of the development of the European electricity sector that is in line with the climate and energy targets of the European Union for 2030 and 2050. The role of energy storage and transmission under various assumptions about a) development of electric battery costs, b) transmission grid expansion restrictions, and c) the variability of future electricity demand is demonstrated. Two models are soft-linked -LIBEMOD, a multimarket energy equilibrium model of Europe, and TIMES-Europe, a bottom-up stochastic model of the European electricity and district heat sectors -to pro -vide an analysis of the decarbonization of the electricity sector that has consistent assumptions about electricity use and fuel prices. To explicitly value flexibility, a stochastic methodology is used to ensure that investment decisions take into account different operational situations that can occur due to weather-dependent renewable generation and the uncertainty of the electricity demand. It is demon-strated that the European power sector can be decarbonised with a 65%-70% share of the electricity supply from wind power and PV in 2050. The cost-efficient investment in stationary batteries is highly dependent on technology development in PV and expansion of the international transmission grid. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).