Mass electricity blackouts: Histrory and learnings

The risk of massive failures affecting the supply to millions of customers and darkening whole regions or countries may even be increasing as demand rises, especially for air conditioners, and electricity networks are integrated over increasingly wide areas. India's power failure earlier this year has heightened concern about the reliability of power networks integrated over wide areas, and raised questions about the wisdom of China's plan for an ultra-high voltage super-grid. On July 31,

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