The company that built the United States’ first offshore wind farm says the powerful storm that hit the Northeast this week was a chance to go “full throttle” and put the turbines through their paces. Deepwater Wind says all five turbines off Rhode Island operated at full capacity during much of Tuesday’s nor’easter. It says the wind farm automatically powered down for several hours when the sustained wind speeds exceeded 55 mph, the designated limit. Winds got as high as 70 mph. Deepwater Wind CEO Jeffrey Grybowski says the offshore wind industry loves strong storms and the wind farm handled the season’s worst conditions superbly. The blustery late-season storm plastered the Northeast with sleet and nearly three feet of snow is some areas.