On May 15, 1:59*pm, Martin Brown
wrote:
On 14/05/2011 19:11, harry wrote:





On May 14, 9:18 am, Martin
wrote:
On 13/05/2011 17:21, harry wrote:

On May 13, 5:20 pm, * *wrote:
I have started a group about PV panels if anyone has them or is
considering getting them. *Please join& * *recount experiencse/
questions.

Damn. Forgot to put the link in! *;-0
http://groups.google.com/group/feed-.../topics?start=

Looks genuine enough and not selling anything so please don't give the
OP too hard a time.

People who are on the previous much less generous FIT contract are livid
about the new more generous deal not being available to early adopters..
And have accumulated experience of running them and in this case online
realtime and historic data. eg.

http://www.viridis.net/energy/solar-pv.html

I am thinking about installing PV at the moment - not because I believe
they will save the planet (at this latitude PV is crazy) but because it
provides a viable long term return on investment!

I will probably join and pass the link on to a few friends who already
have PV arrays and/or campaign for energy efficiency and green energy. I
hope you do manage to get enough critical mass to share experiences.

Regards,
Martin Brown

It's only a money thing with me. It's a lot better deal than leaving
money in the bank to rot these days. *The return in my case is
projected to be 11.5%.
Only been running for three weeks but it looks achievable. *But only a
full year will tell for sure.

If you can give a monthly average or quarterly average and the angle of
slope and azimuth of your roof it should be possible to give a pretty
good independent guestimate of average annual output using old solar
power tables I have from Kew from the 1970's (first oil shock era).

I need to do 10kwh/day average over the whole year. So far about 19kwh/
day. *Obviously things will not be as good in Winter but should
improve as days lengthen.

If that was for April then it is probably atypical but puts a rough
lower bound on your annual average output at around 12kWh/day.

An interesting quirk in winter on sunny days is that efficiency is
higher because the cells stay cold. The days are short though...

A lot of the solar powered "please go round the bend" and "danger ice"
signs up here die a horrible death in the cold dark winters which is
when they are most needed. They are almost always dead in the water on
cold frosty mornings. One not far away often has a car embedded in the
exit point from the bend. Another failed to prevent someone embedding
their car into a house on the bend.

Regards,
Martin Brown- Hide quoted text -

- Show quoted text -

The highest daily KWh so far is 29.
The lowest has been 9.6 (rain).
The average is down to 18Kwh with this cloudy weather of the last
week.
Hopefully things will buck up this next few months.
We do all the washing, baking. cooking etc on sunny days at midday
when possible.