A decision support tool to assist with lifetime extension of wind turbines

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Abstract

This paper is aimed at analysing the levelised cost of energy (LCOE) of onshore wind turbine generators (WTGs) that are in operation beyond their design lifetime. In order to do so, the LCOE approach is introduced and input parameters are discussed for a UK deployment. In addition, a methodology is presented to support economic lifetime extension and investment decision making at the end of an asset's design lifetime. As part of a case study, a wind farm consisting of six 900 kW WTGs is subjected to different combinations of i) lifetime extension (5- 15 years), ii) input assumptions (pessimistic, central, optimistic), and iii) re-investment types (retrofits). Results indicate that in the central lifetime extension scenario, LCOE estimates of 22.40 £/MWh are achievable.
Original languageEnglish
Pages (from-to)423-433
Number of pages11
JournalRenewable Energy
Volume120
Early online date29 Dec 2017
DOIs
Publication statusPublished - 31 May 2018

Keywords

  • lifetime extension
  • wind turbine
  • LCOE
  • decision making
  • economics

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