PJM Interconnection, the operator of the largest U.S. electric grid, has issued a maximum generation alert and load management alert for July 24 due to expected high peak load demand amid a heat wave. PJM Interconnection, whose area covers 13 mid-Atlantic and Midwest states and the District of Columbia, said that the alert does not require any action from customers. It is mostly to notify neighboring systems that electricity exports from PJM may be curtailed on Thursday, the grid operator said. PJM has also issued a Hot Weather Alert…