"The Natural Philosopher" wrote in message
...
tim.... wrote:
I guess that this is off topic but I suspect that I will find some
experts here.

My sister has had a man around to quote for this and I've been tasked
with checking out if what she was told makes sense.

She has a bungalow with a shallow sloped roof and the quote was to
install 14 panels on an Easterly facing roof because the Southerly facing
one is shaded by a tree. So the figures a

Expected output 2928 kWh per year.

Returning 41.3 feed in tariff plus a saving on her electric bill of 50%
of the output at say 12p and the other 50% output gains 3p from the
electric company.

The prices a

a) A "leasing" scheme whereby the householder pays an "installation" fee
of 2610.00 and receives the "free electricity plus the "3p" but the
company receive all of the 41.3 feed in tariff.

b) Outright purchase costing 18237.00 whereby the householder keeps all
of the returns.

I calculate that (a) returns around 220 pounds (8.4%) and (b) returns
1430 pounds (7.8%).

So the question is, are these figures actually achievable and is the cost
price competitive?


also ask yourself how long the output will stay at those levels with dust,
bird****, and general wear and tear.

They need cleaning once per year. I don't think that there's any "wear".



And how long the government will tolerate buying micro amounts of
electricity at 20 times the bulk price from a nuclear set.

They "promised" 25 years, but this is a risk!