Spain’s grid issues urgent blackout warning as dangerous voltage swings threaten power supply A massive blackout struck several European nations in April. Dangerous voltage swings have now returned to the Spanish grid. The recurring crisis highlights systemic vulnerabilities in renewable-heavy systems. Officials are urgently implementing measures to stabilize the fragile grid. Just months after a massive blackout paralyzed the Iberian Peninsula, Spain’s grid operator is sounding the alarm again. The same dangerous voltage swings that caused Europe’s most significant power failure in over two decades—stranding commuters, crippling hospitals, and plunging millions into darkness on April 28—have returned. The recurring crisis raises urgent…

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