In its Order No. 773-A, issued April 18, 2013, the Federal Energy Regulatory Commission denied in part and granted in part requests for rehearing, and made certain clarifications, of its December 20, 2012 Order No. 773 in which it approved the revised definition of "Bulk Electric System" as developed by the North American Electric Reliability Corporation ("NERC"), for determining which facilities or elements are subject to NERC's Reliability Standards. Order No. 773-A also responded to certain requests for clarification of the related NERC Exceptions Process by which an entity could seek to exclude or include selected facilities as part of the Bulk Electric System. The linked memorandum summarizes Order No. 773-A.