This year or next, wind farms will overtake hydroelectric dams as the top renewable energy source in the United States, providing roughly 7% of the country's total electricity demand from an installed base of over 90,000 megawatts. And almost all the turbines will be located on land, with offshore projects kicking in a paltry 30 megawatts, or 0.033%, of that total. While offshore wind power in the United States is not very impressive today, there are signs that the sleepy industry may finally be waking up.