ANNAPOLIS -- State lawmakers voted yesterday to overturn Gov. Robert L. Ehrlich Jr.'s veto of the Democrats' energy plan that will postpone a 72 percent rate increase by Baltimore Gas and Electric Co. but forces customers to pay interest on the deferred charges. The company's 1.1 million residential customers will see their bills increase 15 percent on July 1 -- not the 72 percent increase to market rates set earlier this year in a wholesale electricity auction overseen by the utility-regulating Public Service Commission. However, the money customers save will still be owed to the company, and the customers will...