Yasuda, YohArdal, Atle RyggCarlini, Enrico MariaEstanqueiro, AnaFlynn, DamianGomez-Lázaro, E.Holttinen, HanneleKiviluoma, JuhaVan Hulle, FransKondoh, JunjiLange, BernhardMenemenlis, NickieMilligan, MichaelOrths, AntjeSmith, J. CharlesSoder, Lennart2014-05-062014-05-062013Yasuda, Y.; Ardal, A.R.; Carlini, E.M.; Estanqueiro, A. [et.al.]. Flexibility chart: Evaluation on diversity of flexibility in various areas. In: 12th International Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Power Plants, Book of Proceedings, London, UK, 22-24 October, 2013, 6 p.http://hdl.handle.net/10400.9/2460This paper evaluates various aspects of flexibility in power systems worldwide within the multi-country study framework of IEA Wind Task 25, including grid components and actions which have been favoured for enhancing flexibility in different areas/countries/regions, and how TSOs/ISOs/ utilities intend to manage variable generation in their operating strategies. One methodology to evaluate the diversity of flexibility sources is a "flexibility chart”, which can illustrate several flexibility parameters (e.g. hydro, CCGT, CHP, interconnection) in a polygonal radar (spider) chart.engWind energyVariable generationSolar energySystem flexibilityInterconnectionconference object