OTEC returns to the world's energy agenda?

According to energy analyst Andrew McKillop, OTEC may be returning to the world’s energy agenda. He writes briefly about this in an interesting article about Economy restructuring and peak oil [cached].
Andrew says: “It can be noted that OTEC or ocean thermal energy conversion is yet again a ‘tropical country resource’, or potential resource especially suited to integration with ocean fish farming or mariculture. Current interest in, and development effort in both these domains (large-scale regional hydropower, OTECs and mariculture) are almost non-existent but this in now way reduces their huge potential, as with geothermal energy.”