"David Hansen" wrote in message
news
The reports at
http://www.sd-commission.org.uk/pages/tidal-power.html discuss the
issues. Offshore lagoons are probably not the thing,

It states its finings on not enough practical evidence of tidal lagoons.
One was to be trialled off Swansea. Modelling is very upbeat on them - then
there is the knock-on effects.

The following is just barrages, not lagoons.
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Liverpool, UK - 25 March 2009: Engineers at the University of Liverpool
claim that building estuary barrages in the North West could provide more
than 5% of the UK's electricity.
http://www.liv.ac.uk/news/press_rele...r-barrages.htm

Joe Flanagan, Head of Energy and Environmental Technologies at the Northwest
Regional Development Agency (NWDA) said: "The NWDA is pleased to have
supported this project, which has provided an important stimulus to the
concept of tidal power in England's Northwest. There are a variety of groups
and individuals promoting a number of schemes in the region, which have now
been brought together under the Northwest Tidal Energy Group."
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This is very interesting indeed...
A pilot scheme is about to be tested in Norway and the Dutch are very
serious about it wanting one in the mouth of the Rhine.

They can be merged into desalination plants too, so fresh water as well.
Looks good and all eco.
http://www.newscientist.com/article/...ers-mouth.html

Most UK river mouths could have these plants. Yep. No dams either. It
appears feasible in large estuaries where there is a lot of fresh water
flowing into the sea. Could be a power station in each estuary where salt
and fresh water meet. Cities like Liverpool, Bristol, etc, could take all
their power from these local station with little line losses.