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Mark Burton<p>This very interesting article basically says it was likely to be either human error or a system fault that caused the Iberian apagón or grid shutdown.<br>Not an excess of wind or solar, not a cyber attack, not a weather abnormality.<br>However, because of the uneven and rapid expansion of solar and wind, the system relies on quick corrections to rebalance frequency &amp; voltage. Seems likely there was a system fault to do with the rebalancing mechanism.</p><p><a href="https://mstdn.social/tags/Spain" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Spain</span></a> <a href="https://mstdn.social/tags/PowerOutage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PowerOutage</span></a> <a href="https://mstdn.social/tags/GridCollapse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GridCollapse</span></a></p>
Doug Bostrom<p>Somebody with decent chops has produced some excellent digests of events leading to similar, on Wikipedia. ( went down this rabbit hole quite recently)</p><p><a href="https://scicomm.xyz/tags/GridCollapse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GridCollapse</span></a> <br><a href="https://scicomm.xyz/tags/PowerTransmission" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PowerTransmission</span></a> <br><a href="https://scicomm.xyz/tags/ElectricalGrid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricalGrid</span></a> </p><p><a href="https://arstechnica.com/tech-policy/2025/04/massive-power-outage-in-spain-portugal-leaves-millions-in-dark/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">arstechnica.com/tech-policy/20</span><span class="invisible">25/04/massive-power-outage-in-spain-portugal-leaves-millions-in-dark/</span></a></p>