Renewables: "talking 'bout my generation"

nigelpm

Another nigh on 27kwh day for me. Getting boring now ;-)

KevinG

theboylard wrote: »

So, the shadow on the roof from the chimney - is that robbing me of afternoon generation and might be worth looking at optimisers, or is it nothing to worry about?

It certainly looks like it. In the absence of micro-inverters, shading on one panel will knock the output of all the others on the same string.

KevinG

nigelpm wrote: »

In the sense that historic isolation levels cannot determine future levels.

To get a sensible comparison you really need to compare with other installations in your area.

I understand that, but the PVGIS figures do seem to be updated quite regularly, I know mine have changed over time. Two different things I think rather than "arbitrary".

Dodo0808

Best day so far...25kWh :j:j:beer:

nigelpm

KevinG wrote: »

I understand that, but the PVGIS figures do seem to be updated quite regularly, I know mine have changed over time. Two different things I think rather than "arbitrary".

You're right. Arbitrary wasn't the right word ;-)

jimjames

theboylard wrote: »

So, the shadow on the roof from the chimney - is that robbing me of afternoon generation and might be worth looking at optimisers, or is it nothing to worry about?

Oh, and what to do about the flying rats?! I don't want to kill them (ok, I do!), but would an airsoft gun (onbviously non-lethal) be an acceptable teaching tool to encourage them to poo elsewhere?!

Thanks again to all! And my first 5 O

Shade will definitely have an effect. I spotted a drop in our panels, then looking up to realise someone had the velux window open! Over 90 mins at the end of the day we lost 1kWh. Earlier on that would have been much more significant.

http://uk-solarpanels.blogspot.co.uk/2012/07/effect-shade-solar-panels-output.html

jimmyboy420

Theboylard, are you pretty much exactly east south eastern facing?

Looks similar to my shading from a chimney. You can see my output, with optimisers, a page back, a much smoother curve...

nigelpm

KevinG wrote: »

It certainly looks like it. In the absence of micro-inverters, shading on one panel will knock the output of all the others on the same string.

Indeed, Kevin is spot on.

Shading is a huge problem on PV installations not using individual inverters.

I would hope your installers made you very aware of this.

groovyf

jimmyboy420 wrote: »

I never got their confirmation email...

Me neither... but I emailed them directly and a helpful person manually activated my account. Will take a proper look at what's on their website tomorrow now.

Oscargrouch

theboylard wrote: »

Oh, and what to do about the flying rats?! I don't want to kill them (ok, I do!), but would an airsoft gun (onbviously non-lethal) be an acceptable teaching tool to encourage them to poo elsewhere?!

Thanks again to all! And my first 5 O

Just get rid of the Flying Rats.....:eek: Enjoy your dinner...Make sure though, that if you miss, you know where your projectile may land...;)

Another Hawaii today + 1.48 O's; last time I did better than this was on the 23rd of April 2013 with a Hawaii + 1.52 O's....:D