On Sun, 14 Oct 2007 01:57:46 -0700, Jonathan
wrote:

I work very hard to market ethically, using the "safest low figures"
as provided by the Energy Saving Trust and guidelines from the Solar
Trade Association

You consider them to be reliable sources?

The very, very minimum saving on an appropriate solar thermal
installation is £75 per annum per panel, in the real world it's many
times more.

Actually in the real world it's usually less, and the "per panel"
figure is twaddle because in the few peak months you simply make more
water than you can use with multiple panels. The gain of the extra
panels only occurs at either end of the summer and during winter and
is very small compared with their cost.

I'm sure even the most sceptical person in this group can
see all of the figures are utter nonsense. But what to do about an
ignorant public?

The ignorant public have been mislead by various proponents of
greenwash for decades. I haven't noticed installers and the Solar
Trade Association doing anything about countering the ludicrous
claims made on behalf of their industry.
--
Peter Parry.
http://www.wpp.ltd.uk/