Evaluation of electricity storage versus thermal storage as part of two different energy planning approaches for the islands Samsø and Orkney

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Abstract

Island energy systems should aim for a better integration of local resources and exploit their potential forlocal energy supply to increase their independence and security of supply besides other benefits. Two trends addressing this problem can be observed: On the one hand, increasing the local use of renewable electricity in the electricity sector by investing in Battery Energy Storage Systems (BESS). On the other hand, the integration of all energy sectors into a Smart Energy System (SES) with the conversion of renewable electricity to heat - thus enabling the usage of Thermal Energy Storage (TES). In this paper, these two potential approaches are investigated through energy systems analyses using EnergyPLAN for the Danish island Samsø and the Orkney islands in Scotland. This investigation shows that BESS tend to address only the electricity sector, while TES furthermore improves issues in the heating sector and enables possibilities in the transport sector. The TES approach results in overall reduced energy system costs, while the BESS has a stronger effect on the exchange of electricity. Depending on the various energy systems, both approaches present potential solutions, while the SES approach with the use of TES demonstrates more advantages for the whole energy system.
Original languageEnglish
JournalEnergy
Volume175
Pages (from-to)505-514
Number of pages10
ISSN0360-5442
DOIs
Publication statusPublished - 15 May 2019
Event13th Conference on Sustainable Development of Energy, Water and Environment Systems - Splendid Hotel La Torre, Palermo, Italy
Duration: 30 Sep 20184 Oct 2018
http://www.palermo2018.sdewes.org
http://www.palermo2018.sdewes.org/

Conference

Conference13th Conference on Sustainable Development of Energy, Water and Environment Systems
LocationSplendid Hotel La Torre
CountryItaly
CityPalermo
Period30/09/201804/10/2018
Internet address

Keywords

  • thermal storage system
  • EnergyPLAN analyses
  • Battery energy storage system
  • smart energy system
  • electrified heating
  • integrating energy sectors

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