On Wed, 24 May 2017 20:39:04 +0100, bert wrote:

In article , Harry Bloomfield
writes
Tim Streater brought next idea :
Which you get from where? And when it comes to pumping it out, where
does the water go?

It would be pumped out to a lagoon, then allowed to flow back via the
generators.

A lagoon eh? And just how big would this lagoon be and where do you
suggest it is located?

We already have one and it's pretty big, it's called 'the sea'. ;-)

Cheers, T i m