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Grid Operators Say Earthquake Had No Immediate Impact on Operations

The PJM Interconnection and the New York Independent System Operator on April 5 said that an earthquake with an epicenter in north-central New Jersey had no immediate impact on operations.

An earthquake estimated at 4.8 on the Richter scale, with an epicenter in north-central New Jersey, was felt in portions of the PJM region the morning of April 5, the PJM Interconnection said.

PJM coordinates the movement of electricity through all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia.

“Operations of the PJM electrical grid are running normal. Preliminary reports indicate no impacts to grid operations or to the PJM campus. PJM is in active communications with transmission and generation owners to monitor any additional information or developments throughout the day,” it said on April 5.

“There were no immediate impacts observed on the transmission system or with generation in New York.  We continue to communicate with asset owners across the state to assess any impacts moving forward,” said Andrew Gregory, Manager for External Communications at NYISO.

"The New York Power Authority performed immediate inspections at its generation assets and offices in the impacted areas. No concerns were identified," said NYPA spokesperson Lynne Smith. "There were also no impacts to NYPA’s transmission assets resulting from the earthquake."

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