David B wrote:
"newsposter" wrote in message
...
It's probably stupid idealistic naiveity but I've often wondered why
renewables can't eventually produce 100% of the world's energy
requirements.

Enough pump storage systems could surely buffer the demands of the
'Eastenders' broadcast on a cold Boxing day.
Enough tidal power systems would surely provide an entirely predictable

A company which operates near here - http://www.engb.com/ has spent a lot
of their own and gov money on tidal energy.

They have concluded that it is not a viable source of significant amounts of
energy


Meanwhile, at Scapa Flow, the reverse applies and wave energy is considered both
viable and highly significant. The possibility of exporting surplus to the
mainland (Europe) has been mentioned.


--
Gianna
(in the interests of balance)