Challenges of variable energy resource integration and power system security: Lessons from the 2025 Iberian system blackout
DOI:
https://doi.org/10.32397/tesea.vol6.n1.911Keywords:
Variable energy resources, Power system security, Iberian blackout, Ancillary services, Distributed generation, Demand-side flexibilityAbstract
This editorial explores the challenge posed by the growing integration of variable energy resources (VERs) into power systems, referencing the April 28, 2025 blackout in the Iberian grid as a case study. Despite robust grid infrastructure and dispatchable generation capacity, a sharp solar ramp, low demand, and limited voltage control led to system collapse. The event underscores the need for improved ancillary services, real-time visibility of distributed generation, and greater demand-side flexibility to ensure reliable operation under high VER penetration.
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Copyright (c) 2025 Mauro Gonzalez-Sierra
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution 4.0 International License, which allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
