Pepco’s chief executive, Joseph Rigby, didn’t get a salary increase last year because of “customer reliability issues,” but he still managed to double his overall compensation, regulatory filings show. Thanks mostly to an employment deal and supplemental executive retirement plan, Mr. Rigby’s overall compensation rose to nearly $7.2 million last year, according to Securities and Exchange Commission filings. With hundreds of thousands of Pepco customers in the District of Columbia and Maryland left without electricity for days in sweltering temperatures after a violent storm Friday, Mr. Rigby’s compensation is likely to get a closer look as questions emerge about the...