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Blackout risk rises as heatwave stresses largest US electric grids

The Guardian World Wednesday 02 September 2026, 12:16 UTC By Reuters 1 min read
Key Points

US energy department warns of potential for outages in PJM Interconnection, serving 67 million from DC to ChicagoThe risk ⁠of power outages ⁠is expected to ​escalate across a broad swath of the United States on Wednesday as intense heat will test the capacity of electricity supplies ⁠serving millions of homes and businesses from the midwest through the mid-Atlantic. The US Department of Energy warned of the potential for heightened blackout risks in ⁠the PJM Interconnection, the largest US...

US energy department warns of potential for outages in PJM Interconnection, serving 67 million from DC to Chicago

The risk ⁠of power outages ⁠is expected to ​escalate across a broad swath of the United States on Wednesday as intense heat will test the capacity of electricity supplies ⁠serving millions of homes and businesses from the midwest through the mid-Atlantic.

The US Department of Energy warned of the potential for heightened blackout risks in ⁠the PJM Interconnection, the largest US electric grid, which serves 67 million people in ​a territory stretching from Washington DC to ‌Chicago.

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US (LOCATION) PJM Interconnection (ORG) DC (LOCATION) the United States (LOCATION) midwest (LOCATION) mid-Atlantic (LOCATION) The US Department of Energy (ORG) ⁠the PJM Interconnection (ORG) ​a (LOCATION) Washington DC (LOCATION)
Originally published by The Guardian World Read original →

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