to be fair the article was not intended to be a discussion of the economic issues surounding wind power, but whether is would be potientially possible to satisfy the demand for electricity using wind power.
The economic issue is mainly a concern for land based applications. For us, at sea, electricity produced via diesel or Solar is far more expensive than power generated by wind. Large turbines can be made with a minimal amount of tools and skill (www.otherpower.com) and be very cost effective if you don’t have access to the terrestrial grid power supply.
I would have liked this report to include wind speed data from offshore locations. I’m sure that data is out there but I just haven’t looked yet.
You just go step-by-step selecting the region, data type, etc and you get nice color maps. Here is an example of an Atlantic Ocean Forecast Zone, a model run-time of 30 hour back, a product of Wind Speed and Direction, and a forecast time relative to start of 0: