C-E (curtailment – Energy share) map: An objective and quantitative measure to evaluate wind and solar curtailment
Yoh Yasuda, Lori Bird, Enrico Maria Carlini, Peter Børre Eriksen, Ana Estanqueiro, Damian Flynn, Daniel Fraile, Emilio Gómez‐Lázaro, Sergio Martín‐Martínez, Daisuke Hayashi, Hannele Holttinen, D. Lew, John McCam, Nickie Menemenlis, Raul Miranda, Antje Orths, J. Charles Smith, Emanuele Taibi, Til Kristian Vrana
Abstract
As the share of VRE (variable renewable energy) has grown rapidly, curtailment issues have arisen worldwide. This paper evaluates and compares curtailment situations in selected countries using an objective and quantitative evaluation tool named the “C-E map” (curtailment-energy share map). The C-E map is a correlation map between curtailment ratios that mean curtailed wind (or solar) energy per available energy and energy shares of wind (or solar). The C-E map can draw a historical trend curve in a given country/area, as an at-a-glance tool to enable historical and/or international comparison. The C-E map also can classify the given countries/areas into several categories, according to the current levels of curtailment ratio and historical trends. The C-E map helps institutional and objective understanding of curtailment for non-experts including policy makers.