Solar panel production figures

rtho782 said:
2 of my 645w panels are wall mounted, I am hoping they punch above their weight when the sun is low in the sky!!
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I've got three SSW 525w wall mounted panels, they only do well on sunny days, overcast days they generate very little.

In December they generated 27 kWh, whole system was 193 kWh.
 
Ron-ski said:
I've got three SSW 525w wall mounted panels, they only do well on sunny days, overcast days they generate very little.

In December they generated 27 kWh, whole system was 193 kWh.
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That's disappointing , I was hoping that as the ideal angle in winter is something like 70 degrees, 90 is much closer to 70 than the 30 the roof is on and they would do well
 
They do appear to be generating a bit better than predicted, but when I look at the figures I do feel a little disappointed, but I need to remember its only a 1575w array.

Ronski's S/S/W rear wall 1.575kW | Weekly

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See this post for a picture of them

Ronski's Solar & battery DIY build with whole house backup

Time to get jealous - see this post as you must have missed it, you've got some catching up to do :D Love it!!! Have you reached solar maximum yet?! There can't be many inches left not covered by panels?? I'll be able to use my new smart telescope to give you early heads up of sun spots...
forums.overclockers.co.uk forums.overclockers.co.uk
 
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A slightly below average day.

SolarEdge: 17.8 kWh
Garage: 19.59 kWh
North west roof: 19.8 kWh
House rear wall: 4.82 kWh
Peak power was 13.95 kW at 14:05

Total generated yesterday: 62.01 kWh
Total exported yesterday: 66.9 kWh
Total imported yesterday: 29.14 kWh
 
I'm about to move into a house with 4kw of panels (no battery) on an older FIT scheme paying 7.4p/kw export rate and 18.95p/kw generation rate.

Does anyone have any advice on if this is good or not? Is there anything I should immediately look to change / move scheme to? I think the current tarrif agreement has another 10 years or so left.

I also don't understand why there is a rate for generation? Is that not just local use?
 
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relicalpha said:
I'm about to move into a house with 4kw of panels (no battery) on an older FIT scheme paying 7.4p/kw export rate and 18.95p/kw generation rate.

Does anyone have any advice on if this is good or not? Is there anything I should immediately look to change / move scheme to? I think the current tarrif agreement has another 10 years or so left.

I also don't understand why there is a rate for generation? Is that not just local use?
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If its south facing it might generate about 4000kWh per year and you'd get paid 18.95p for these (£758). Say you use about a third of what's generated yourself: you're not buying about 1333kWh at around 25p/kWh (£333) and getting paid 7.4p/kWh for the remaining 2667kWh exported (£197).

So yes its very good.
 
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reef said:
If its south facing it might generate about 4000kWh per year and you'd get paid 18.95p for these (£758). Say you use about a third of what's generated yourself: you're not buying about 1333kWh at around 25p/kWh (£333) and getting paid 7.4p/kWh for the remaining 2667kWh exported (£197).

So yes its very good.
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Thanks, that's super helpful.

When you say used 1333kWh myself, is that usage that will never hit my traditional electric bill? So that's effectively free, or say under a 3000kWh annual household usage, thats 44% never billed to me? Then ontop of that you get the £758+£197?
 
relicalpha said:
Thanks, that's super helpful.

When you say used 1333kWh myself, is that usage that will never hit my traditional electric bill? So that's effectively free, or say under a 3000kWh annual household usage, thats 44% never billed to me? Then ontop of that you get the £758+£197?
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When the array is generating, any which you use is electricity you would normally have purchased, so you're saving that from your bill. The generation rate is an amount you get paid for what's generated whether you use it or not. The export rate is what you get paid for energy you generate which you don't use, which is sent out to the grid.
 
reef said:
When the array is generating, any which you use is electricity you would normally have purchased, so you're saving that from your bill. The generation rate is an amount you get paid for what's generated whether you use it or not. The export rate is what you get paid for energy you generate which you don't use, which is sent out to the grid.
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Nice thanks, I can see why that means a battery potentially saves you much more.
 
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