The message
from Matt contains these words:

So no amount of windmill building, even up to and beyond T B Liar's
targets will keep the lights on. Tidal barrages might have some future
but again the environmentalists will moan. The ONLY possible future is
nuclear. It will really upset the environmentalists but unless action
is taken now (a firm decision to press the button for a new generation
of multiple nukes in the next 12-24 months) the lights will go out in
a couple of decades (or less).

Tidal barrages would be a much better bet than wind power. Not only
would a relatively few schemes producing a serious amount of power
suffice their output would be entirely predictable and if strategically
placed round the coast provide continuous cover.

--
Roger Chapman