The Block Island Wind Farm, in Rhode Island, ACTUALLY WILL BE America's 1st offshore wind farm when it is completed at the end of August 2016. The farm will be fully operational by November 2016, at which point it will be America's ONLY operational offshore wind farm -http://www.fastcoexist.com/3062881/world-changing-ideas/americas-first-offshore-wind-farm-is-almost-ready
It will only be 30 MW. In comparison, the London Array offshore wind farm is 630 megawatts and powers "half a million UK homes every year, which works out to two-thirds of the homes in Kent." (source:http://www.greencitytimes.com/Sustainability-News/london-array-paving-the-way-for-efficient-wind-energy-farms.html)
Scotland recently powered most of their country with wind energy, along with countries like Germany, Denmark, and Ireland (and much of that is offshore wind energy - http://www.ecowatch.com/5-countries-leading-the-way-toward-100-renewable-energy-1881999459.html)
Offshore wind energy (plus wind energy in general, solar, other renewables), should serve as a complete replacement for dirty fossil fuels, according to our research. What do you think?