This one's broke.
How do I get the hydrogen from the off-shore platform back to shore? Where do I store the hydrogen? How do I maintain the platforms and windmills? Lot's of infrastructure will be required.
There is no such thing as "free". Everything has a cost.
I was referring only to electrical lines and pipelines because they would be impractical as infrastructure for the application.. A platform would require storage tanks with a scheduled visit from a tanker to transfer hydrogen from the storage. Of Course.
Developing the infrastructure to convert to a hydrogen based energy economy would create thousands of jobs. Potentially hundreds of thousands of wind generators and accompanying platforms would have to be manufactured. This would require considerable investment. And yes, nothing is for free.
Some benefits of the wind generator concept is that individuals could invest in their own water containment, hydrogen platform, or form co-operatives to reduce the cost of production, storage and transport and eliminate the middleman from the distribution scheme. Just the thought of people eliminating middleman markups and cutting huge corporate control of energy distribution and price manipulation, is in its self enough to create resistance and misinformation to a shift to a hydrogen based energy economy. No wonder the oil companies are the leading critics of the concept!