This is a new development here in the US for clean (no-carbon) renewable energy...
MPBN Article (http://www.mpbn.net/News/MPBNNews/tabid/1159/ctl/ViewItem/mid/3762/ItemId/28244/Default.aspx)
It will create some new navigation issues here in the Gulf of Maine [and other areas as it expands].
Personally, I'm glad to see it.
A follow-up article...
History Made as Floating Turbine off Maine Coast Begins Feeding Grid (http://www.mpbn.net/News/MPBNNews/tabid/1159/ctl/ViewItem/mid/3762/ItemId/28480/Default.aspx)...
"...the prototype turbine, if successful, could foreshadow a future where hundreds of offshore windmills produce electricity - at competitive rates - for customers all over New England."
A previous governor who went into the industry has called the Gulf of Maine with its steady winds a potential Saudi Arabia of wind power.