“…In addition, there is a significant amount of work available in how to provide stability and other grid services such as frequency support with power-electronic-interfaced devices. In particular for the Cape Verdean system, Sørensen et al [70] explore the inertia inherently available during a progressive renewable transition up to 60% penetration. This work was continued with a study comparing synchronous condensers (SC), with EES providing fast frequency response and virtual inertia to maintain the stability on the same system [71].…”