Cliff, I don't dismiss the other options. Like Pat Takahashi states on his blog today however I believe, OTEC is the only energy option with any kind of chance for making a real contribution to the climate problem. As we have discussed before I think the technical and environmental problems are mostly overcome by the use of a heat pipe arrangement instead of cold water pipes.
The fact that it has 5 times the potential of the current petroleum market, which will be non-viable in less than 50 years, also makes it hugely attractive.
As to the resource being a half a world away from the load, this applies to Middle East oil and in most cases LNG as well.
As to wavepower Pat states 3.7 TW is (hugely optimistic).
It also has positive implications for the sea level problem.
Your opinion is respected, thanks.