Total U.S. nuclear plant availability slipped early Dec. 11 to 94.32%, down from 96.30% on Dec. 8 but was above the 92.63% rating recorded on the same day in 2016.
Total production was pulled lower by the loss of several reactors over the past weekend. Exelon Corp.'s Clinton reactor in Illinois was offline as of early Dec. 11, from 100% on Dec. 8. According to a filing from the U.S. Nuclear Regulatory Commission, the unit was manually scrammed "due to the loss of division 1 AC power to numerous components."
Also, Entergy Corp.'s Indian Point 2 unit in New York and Dominion Energy Inc.'s North Anna 2 in Virginia were both offline as of early Dec. 11, down from 98% and 100%, respectively, on Dec. 8.
On the flip side, Tennessee Valley Authority's Watts Bar 2 in Tennessee was operating at 97% as of early Dec. 11, up from 30% on Dec. 8. The reactor was taken offline in late October for a maintenance and refueling outage.
Riverstone Holdings LLC's Susquehanna 2 plant in Pennsylvania was returned to 100% as of early Dec. 11, up from 85% on Dec. 8.