By THE STAR STAFF Pensions for employees of the Puerto Rico Electric Power Authority (PREPA) will continue to be funded through electricity rates, since no alternative source of funding has been found, Robert Mujica, executive director of Financial Oversight and Management Board for Puerto Rico, said Wednesday. Mujica said using the island’s General Fund to pay for the pensions is not an option. PREPA’s revenues are declining year after year. The options are: not funding the pensions, funding...