MARSEILLES, Ill. (AP) – One unit of an electricity generating station in northern Illinois shut down Tuesday night when a main power transformer went offline.
Exelon Nuclear spokesman Adam Slahor says the unit is still down Wednesday morning.
The company is investigating what caused the problem, but it’s not thought to be related to a winter storm moving across Illinois.
The shutdown of LaSalle Generating Station Unit 1 in rural LaSalle County, about 75 miles southwest of Chicago, did not cause any power outages. Slahor says it just means there’s less electricity going to the power grid.
A second unit at the station is still running.
A main power transformer raises the voltage of electricity before it is sent to the electrical grid. Slahor says the plant responded as expected, safely and without incident.