In message <[EMAIL PROTECTED]>, Ron Jones <[EMAIL PROTECTED]> writes > >You really need a *deep* drop to get enough speed into the water flow to >turn the turbines - I doubt if G.Brook is enough.
Not really true - there's a bloke down the road from us getting about 20 kW from a fairly small stream with much less head than Grindley Brook. You just need the right sort of turbine. Guessing the triple locks as 7 m and 11 million gallons / day gives around 40 kW. Definitely worth doing if the capital cost is low enough. BW aren't good at that however! Normal people would be looking at around £4k / kW installed capacity (Energy Saving Trust data) which would give a very short payback. Wassail! -- Martin E Phillips http://www.g4cio.demon.co.uk Homebrewing, black pudding, boats, morris dancing, ham radio and more! The Gloucester-Sharpness canal web page http://www.glos-sharpness.org.uk
