 The Public Service Enterprise Group is planning to construct the 70-mile, 500-kilovolt transmission line known as the Maryland-Piedmont Reliability Project from northern Baltimore County through Carroll County to a substation in southern Frederick County. Spokesman William Smith says PSEG was awarded the contract to build the line by PJM, which manages the regional grid. He said it will meet the growing need for electricity in the region. Smith was asked if construction of a data center by Quantum Loophole was considered.