Decommissioning vs. repowering of offshore wind farms—a techno-economic assessment
Jadali, A. M. and Ioannou, A. and Salonitis, K. and Kolios, A. (2021) Decommissioning vs. repowering of offshore wind farms—a techno-economic assessment. The International Journal of Advanced Manufacturing Technology, 112. pp. 2519-2532. ISSN 1433-3015 (https://doi.org/10.1007/s00170-020-06349-9)
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Abstract
Offshore 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.
ORCID iDs
Jadali, A. M., Ioannou, A., Salonitis, K. and Kolios, A. ORCID: https://orcid.org/0000-0001-6711-641X;-
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Item type: Article ID code: 76876 Dates: DateEvent28 February 2021Published7 January 2021Published Online2 November 2020AcceptedSubjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering Depositing user: Pure Administrator Date deposited: 24 Jun 2021 10:03 Last modified: 12 Dec 2024 11:33 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/76876