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Nuclear update: US output swings higher despite loss of LaSalle 1

Total U.S. nuclear plant availability advanced early March 23 to 87.64%, up from 86.86% on March 22 and still much higher than the 81.73% reported on the same day in 2017.

U.S. output rose despite the loss of Exelon Corp.'s LaSalle 1 in Illinois. The plant was offline early March 23 for undisclosed reasons after being pegged at 24% power on March 22.

On the other hand, three other units ramped production. Exelon's Nine Mile Point 1 in New York returned to full power early March 23 after being cut to 85% on March 22. The recently restarted Tennessee Valley Authority's Browns Ferry 1 in Alabama saw production rise from 24% on March 22 to 91% early March 23. PG&E Corp.'s Diablo Canyon 2 in California was at 28% early March 23, climbing from 7% on March 22.

Looking ahead, private sources indicate that unit 1 of Entergy Corp.'s Arkansas Nuclear One in Arkansas; unit 2 of the South Texas Project in Texas, which is owned by NRG Energy Inc., CPS Energy and Austin Energy; and Exelon's Limerick 1 in Pennsylvania may be shut in the next few days for refueling outages. In terms of power levels, Arkansas Nuclear One 1 is at 100%, South Texas Project 2 is at 92% and Limerick 1 is at 86% as of early March 23.

As of early March 23, a total of 11 units remain offline.

For details of U.S. nuclear power plant operations, visit our Nuclear Availability and Status and Outage pages.