US' largest power grid PJM orders emergency curbs as electricity use nears record peak

America's largest power grid operator, PJM, urged customers to reduce electricity use amid a severe heatwave. Generator outages and overloaded transmission lines strained the system, pushing spot power prices to over $2,500 per MWh. PJM took emergency measures to prevent blackouts, even curtailing exports to neighboring regions as demand neared record highs. This highlights ongoing challenges in modernizing the grid.

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