As the fall refueling season approaches its peak, total U.S. nuclear plant availability dropped early Oct. 9 following the loss of five reactors since Oct. 6.

Exelon Corp.'s Limerick 2 in Pennsylvania was shut from full power for undisclosed reasons while four other units were shut for refueling, including: NextEra Energy Inc.'s Point Beach 1 in Wisconsin, Ameren Corp.'s Callaway plant in Missouri, Vistra Energy Corp.'s Comanche Peak 1 in Texas and Pinnacle West Capital Corp.'s Palo Verde 1 in Arizona.

Helping to partially offset the lost generation was Exelon's Three Mile Island in Pennsylvania, which was restarted and running at 28% power early Oct. 9, and Entergy's Grand Gulf plant in Mississippi, which was ramped from 58% on Oct. 6 to 87% on Oct. 9.

The latest outages leave 11 units offline across the U.S.

For details of U.S. nuclear power plant operations, visit our Nuclear Status and Output Page.