Even the powerful were without power days after Hurricane Irene. Sources say Bill and Hillary Clinton’s rented pad on Lily Pond Lane in East Hampton had its electricity knocked out by the Saturday storm. But the power couple were still in the dark until yesterday afternoon. “Even Clinton can’t get the power on,” a nearby resident exclaimed, adding that the Clintons didn’t have a backup generator and spent days in darkness until the lights came back on at about 3:30 p.m. yesterday. The Clintons weathered Irene by celebrating Bubba’s 65th at the Bridgehampton Tennis and Surf Club on Friday. A Clinton rep did not respond to requests for comment.