Analysis of derating and anti-icing strategies for wind turbines in cold climates

Dimitar Stoyanov, Jonathan Nixon, Hamid Sarlak Chivaee

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)
    161 Downloads (Pure)


    Wind turbines located in cold climates suffer from reduced power generation due to ice accretion. This paper presents a novel method for comparing and evaluating two emerging ice mitigation strategies: tip-speed ratio derating and electrothermal anti-icing. The method used takes into account accumulated ice mass, net energy losses both during and after an icing event, and financial breakeven points; it is demonstrated for the assessment of the NREL 5 MW reference wind turbine during different icing events. Our results show how derating can be preferred over electrothermal anti-icing and how this changes for different wind speeds, icing conditions, ambient temperatures, and system costs. For a 1-hour extreme icing event, it is expected that derating will reduce accumulated ice mass and daily power loss by up to 23% and 37%, respectively. Anti-icing was identified to be the preferred strategy when there were 42 in-cloud icing event occurrences per year, ambient temperatures were above −5 °C, and the system cost was no higher than 2% of the turbine’s capital cost. This research demonstrates to wind turbine operators how different strategies can be selected to improve performance during icing conditions.
    Original languageEnglish
    Article number116610
    Pages (from-to)(In-Press)
    JournalApplied Energy
    Early online date18 Feb 2021
    Publication statusPublished - 15 Apr 2021

    Bibliographical note

    © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

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    This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.


    • Cold climates
    • Ice accretion
    • Icing events
    • Tip-speed ratio (TSR)
    • Wind energy
    • Wind power

    ASJC Scopus subject areas

    • Building and Construction
    • Energy(all)
    • Mechanical Engineering
    • Management, Monitoring, Policy and Law


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