On Mon, 25 Feb 2013 05:30:50 -0800 (PST), Graham Easterling wrote:

Estimated pay back time was 15 years+ using just for hot water, using
for heating was totally out of question

Don't understand this bit. What you use the power for is based on what
appliances you are using when the sun's out (or it's bright).

I sort of get the feeling Will is confusing Solar Thermal and Solar PV. The
former generate heat the latter electricity.

--
Cheers Dave.
Nr Garrigill, Cumbria. 421m ASL.