Total U.S. nuclear plant availability dropped to 95.53% as of Aug. 7, down from 97.18% on Aug. 4 and below the 96.08% reported on the same day in 2016.

Working to tug production lower was the loss of two units unexpectedly over the weekend.

Nine Mile Point 2 in New York, which is owned by Exelon Corp., EDF Group, and Long Island Power Authority, was offline early Aug. 7, down from 100% on Aug. 4. According to a filing with the U.S. Nuclear Regulatory Commission, Nine Mile Point 2 "experienced an automatic scram on high reactor pressure." The cause of the scram is being investigated.

Exelon's Quad Cities 2 unit in Illinois was also offline as of early Aug. 7, down from 100% on Aug. 4.

On the flip side, Southern Co.'s Hatch 2 plant in Georgia, which saw output fall to 75% as of Aug. 4, was operating at full power early Aug. 7.

Tennessee Valley Authority's Watts Bar 2 in Tennessee, which was pegged at 8% on Aug. 4, was ramped to 40% as of early Aug. 7, and Entergy Corp.'s Grand Gulf 1 in Mississippi was operating at 100% as of early Aug. 7, up from 88% on Aug. 4

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