Nuclear power plant unit shuts down after off-site power loss

Exelon Corp’s (NYSE: EXC) 1,136 MW Unit 2 at the Byron nuclear power plant in Illinois shut down Jan. 30 after a loss of off-site power.

According to the Chicago Tribune, Exelon declared an unusual event at the plant the morning of Jan. 30. A spokeswoman was quoted as saying Exelon was looking into the trip and there was a transformer issue and reports of smoke.

The 1,164 MW Unit 1 continues to operate at full power.

This is the second nuclear power plant in as many weeks to shut down because of a loss of off-site power. On Jan. 16, the 1,200 MW Wolf Creek nuclear power plant in Kansas was shut down after a circuit breaker in a switchyard failed, causing the loss of power to the plant. The plant is still shut down.

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