On May 25, 2:51*am, The Natural Philosopher
wrote:
F wrote:
On 24/05/2012 23:42 the_constructor wrote:

In brilliant sunshine, such as we have had over the past couple of days,
what prevents solar panels producing the full permitted 4KW. Down to 2KW
now.

Temperature. The hotter they get, the less efficient they are.

I got peaks of over 4kW out of our 3.99kW system a few weeks ago when
the sky was clear but the temperature low. On similarly bright but warm
days now, the peaks are around 3kW.

Overall, with the longer days, I'm getting in excess of 25kWh each day.

Oh and the other thing is the SPIV factor.

spiv stands for "Solar Power 'Investment' Vendor".

where an average of 100 watts becomes 'up to 4KW'
* etc. etc.

--
To people who know nothing, anything is possible.
To people who know too much, it is a sad fact
that they know how little is really possible -
and how hard it is to achieve it.

Drivelling on again about things you have no clue about eh?