A half-century-old Pennsylvania power plant fueled by oil and natural gas will keep running beyond its scheduled shutdown date following an order from the Trump administration just one day before it was due to retire.

The Eddystone Generating Station near Philadelphia was to close permanently last Saturday because its owner determined it no longer made economic sense to run.

But an order from the U.S. Department of Energy on Friday directed the plant’s owner, Constellation Energy, and grid manager PJM Interconnection to take “all measures necessary” to ensure that the two remaining generation units at the plant are available to operate. The order is effective until Aug. 28 and can be extended.

“Operational availability and economic dispatch of the aforementioned Eddystone Units 3 and 4

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