info about offshore windfarms.  energy for seasteads plus potential for creating a viable economy: energy production/exports.  people will need energy plus its impossible to increase the size of an economy without increase energy production every year.

http://www.technologyreview.com/Energy/20500/

http://www.technologyreview.com/Energy/20854

http://www.technologyreview.com/microsites/spain/wind_archive/