Total U.S. nuclear plant availability dipped early March 27 to 85.02%, down from 86.00% on March 26 but still higher than the 82.82% reported on the same day last year.
Working to pull down total output was the loss of two units. Southern Co.'s Farley 1 in Alabama was offline early March 27 after being pegged at 99% on March 26. According to a report filed with the U.S. Nuclear Regulatory Commission, the unit was required shutdown due to an inoperable main steam isolation valve. Also, Entergy Corp.'s Palisades plant in Michigan was offline early March 27 for undisclosed reasons. The unit was operating at 30% power on March 26.
In addition, Riverstone Holdings LLC's Susquehanna 1 in Pennsylvania saw production slip from 99% on March 26 to 79% by early March 27.
Partially offsetting the lost output, FirstEnergy Corp.'s Davis-Besse plant in Ohio was warming up at 6% early March 27 after being shut on March 3 for planned seasonal work.
Looking ahead, private sources indicate that two units may be shut in the following days for refueling outages.
As of early March 27, a total of 14 nuclear units were reported offline.