Andy Burns wrote:
Chris Green wrote:

I can't find a site providing what seem
to be realistic 'ball park' figures for UK regions.

http://www.reuk.co.uk/wordpress/solar/solar-insolation/

What I *actually* want to know is the 'average over the year' *watts*
from a panel. I could work it out backwards from the above but a
simple "you'll get about 20% of the panel rating averaged over the
year" would be more useful. I want to know how much panel I need to
install to run a water pump, or how big a water pump I can reasonably
power from a 260 watt panel.

--
Chris Green
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