Miscalculation by Spanish power grid operator REE contributed to massive blackout, report finds - Reuters

1. Miscalculation by Spanish power grid operator REE contributed to massive blackout, report finds  Reuters
2. Spain's government blames huge blackout on grid regulator and private firms  BBC
3. Full-scale power failure that shut down Iberian peninsula had no single cause but was not cyber-attack, Spain says – as it happened  The Guardian
4. Spain says April blackout was caused by grid failures and poor planning, not a cyberattack  AP News
5. Cause of massive power cut that plunged Spain and Portugal into chaos revealed  Sky News

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