MACo Bronze Corporate Partner Potomac Edison, a subsidary of FirstEnergy Corp., is nearing completion of a new substation and additional distribution circuits that will enhance service reliability to customers in northern Frederick County, MD. From First Energy Corp's website: Located in the Foxville area, the substation will split an existing 114-mile circuit serving about 1,300 customers into two circuits that will serve about 650 customers each in the Myersville, Wolfsville and Foxville areas. The two…