This story was originally published on Utility Dive. To receive daily news and insights, subscribe to our free daily Utility Dive newsletter. The Federal Energy Regulatory Commission on Tuesday rejected a waiver request from American Electric Power utilities that would have allowed them to sell up to 750 MW in an upcoming “incremental” capacity auction. AEP’s request failed to address a concrete problem — one of the criteria FERC uses when considering waiver requests — because the PJM Interconnection has ...