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Nuclear update: Total availability drops below 90% as 5 units enter planned outages

TotalU.S. nuclear plant availability has dropped below 90%, pegged at 87.21% earlySept. 26, down from 90.30% on Sept. 23, and below the 88.36% reported on thesame day in 2015.

Asexpected, several nuclear plants went offline this past weekend for plannedseasonal maintenance, including FirstEnergy Corp.'s Beaver Valley 1 in Pennsylvania,Entergy Corp.'s ArkansasNuclear One in Arkansas, NebraskaPublic Power District's Cooper Nuclear Station, 's Braidwood 1 in Illinoisand Florida Power & LightCo.'s St. Lucie 1 in Florida.

Also,output at Exelon's Byron 1 unit in Illinois was reduced from 100% on Sept. 23to 78% as of early Sept. 26, while production at FirstEnergy's Perry 1 in Ohiowas cut from 100% on Sept. 23 to 67% as of early Sept. 26.

Conversely,Pinnacle West CapitalCorp.'s Palo Verde 3 in Arizona continued to ramp power over thepast week, eyed at 96% as of early Sept. 26, up from 12% on Sept. 23 afterbeing taken offline Sept. 19.

Outputat Xcel Energy Inc.'sPrairie Island 2 in Minnesota returned to 100% as of early Sept. 26, up from areduced level of 88% previously, while its Monticello reactor in Minnesotaincreased to 58% as of early Sept. 26, up from 43% on Sept. 23. 'sWatts Bar 2 reactor in Tennessee was ramped to 25% as of early Sept. 26.

Power production levels andimpending outage dates are current at the time of publication and are subjectto change. For details of U.S. nuclear power plant operations, visit our NuclearStatus and Outage Report.