As the debate swirls about the state's future energy needs, one thing has become clear: South Carolina is a lousy place to build a large wind farm. On land, that is. Three years ago, the Energy Office hired a consultant to map wind speeds across the state. Using existing weather data and sophisticated computer-modeling techniques, researchers estimated that wind speeds average less than 10 mph on state soil -- too low to efficiently turn today's huge wind turbines. But it's an entirely different story just off the Carolina coast.