This is excellent. The more this fouls up now the sooner we get an act to manage the grid.
The PJM interconnection serves Pennsylvania, Ohio, Virginia, West Virginia, Maryland, Delaware, New Jersey, and parts of other states including the Chicago area in northern Illinois.
Image from here.
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It can be noted that every nuclear power plant in the country is currently on-line and producing power. The large majority of the plants are at or near 100% power output. The new Unit 3 at Vogtle is currently at 46% power, still undergoing startup testing. See NRC reactor status report below for July 27.