Decommissioning vs. repowering of offshore wind farms—a techno-economic assessment

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dc.contributor.authorJadali, A. M.
dc.contributor.authorIoannou, A.
dc.contributor.authorSalonitis, Konstantinos
dc.contributor.authorKolios, Athanasios
dc.date.accessioned2021-03-10T16:07:44Z
dc.date.available2021-03-10T16:07:44Z
dc.date.issued2021-01-07
dc.description.abstractOffshore wind turbines are normally designed for a nominal service life of 20 to 25 years; however, with a significant number of units approaching the second half of their service life, the discussion on selecting the most appropriate end-of-life scenario becomes ever more relevant. Scenarios to be investigated mainly include decommissioning, repowering, or service life extension, while such decisions depend on a number of criteria which should be taken into account and should ultimately inform a techno-economic and risk assessment. This paper performs an initial comparative assessment between two of these scenarios, repowering and decommissioning, through a purpose developed techno-economic analysis model which calculates relevant key performance indicators. The economic model of risk aversion is further adopted to calculate the certainty equivalent of LCoE (levelized cost of energy) based on each of the examined end-of-life scenarios and a stochastic expansion of the deterministic model. An application to a typical, hypothetical offshore wind farm qualifies the full repowering scenario as the prevailing option, under the assumptions considered, with a lower amount of risk premium (1.136 £/MWh) and certainty equivalent (69.821 £/MWh) in comparison to other scenarios, reducing LCoE by nearly 35% compared to partial decommissioning and 36.5% compared to full decommissioning.en_UK
dc.identifier.citationJadali AM, Ioannou A, Salonitis K, Kolios A. (2021) Decommissioning vs. repowering of offshore wind farms—a techno-economic assessment. International Journal of Advanced Manufacturing Technology, Volume 112, Issue 9-10, February 2021, pp. 2519-2532en_UK
dc.identifier.issn0268-3768
dc.identifier.urihttps://doi.org/10.1007/s00170-020-06349-9
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16462
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectCertainty equivalenten_UK
dc.subjectRisk premiumen_UK
dc.subjectLevelized cost of energyen_UK
dc.subjectDecommissioningen_UK
dc.subjectRepoweringen_UK
dc.subjectEnd-of-life scenariosen_UK
dc.titleDecommissioning vs. repowering of offshore wind farms—a techno-economic assessmenten_UK
dc.typeArticleen_UK
dcterms.dateAccepted2020-11-02

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