Solar panel production figures

Ron-ski said:
I think I'm pretty well aware of the what affects what when it comes to solar panels, I really don't think we need information overload that a lot of people won't understand, there's something to be said for keeping it simple ;)

Anyway a meagre 12.7kWh from who knows what equivalent south facing panels at the perfect angle, as they are at different angles and orientations :D

PS. The point was someone could have 20kW or 2kW of panels, with no indication of system size the figures are meaningless really.
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True, I agree with you, its just that your ignoring more factors that mean even adding system size the figures are still meaningless.

I don't think its hard to follow a simple table, and standardise your array. If you want to, its actually quite important if you went to try to understand what your array would do real world of course.
Just once you would need to adjust the output based on either data you already have or can easily estimate (for most angle, they will know facing).

One of the first things we do in the real world is normalise/standardise (ensure accuracy and equivalence) when looking at data. Which in this case to have any relevance needs to be output, orientation and facing adjusted.
If we were looking globally we would need to adjust for that as well, the assumption is we are talking UK but as we have seen, the odd person from abroad makes the generation, or generation / panels a silly comparison.

No offence I know your probably the most up to speed on here with solar or at minimum amongst them.
But as someone who regularly does comparisons of equivalence in something its glaring to me that simply taking the panels and ignoring the other known differences makes the output/w basically useless.

But anyway as I have said all along, I only really care about my own performance, what can MY array, do for me. As such MY generation is what I care about.
Certainly no "ranking" of arrays facing different directions in different places on different rooves adds anything at all for me.
 
alphaomega16 said:
I joined but need to message about getting rid of account, no easy way to add my system.
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You have got a solax inverter haven't you?
If so its a total ball ache

A few people have been getting data out but its quite involved and seems its not perfect yet either.

I gave up in the same situation as you.
Although you may be able to trust some of the data more since you have a sep battery?
The main issue with Solax is they talk "yield" and that includes energy from batteries. (but excludes energy diverted to batteries)
Yield is really usage.
 
13.3 today, not too bad I suppose, whats annoying is my battery at 8.9 out of 13.5 stated kwh is saying 96% lol, got a frustrating bit of bird poop on panels as well that rain wont get

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SpeedFreak said:
If you had your time again would you just fill the roof on both sides? 8+ KW install might do ok over winter.
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If you meant me I would have waited probably til I could have sorted more space in back garden for some panels as well, something that could be rotated/tilted perhaps but with no roof to get in the way and being lower it probably wouldn't be needed.

I am regretting battery storage atm with all the SOC issues im having, considering it has a gateway home backup system the battery being unreliable is a joke, atm for a 13.5kw battery that from 5% flat (thats the reserve) to 100% ive seen 14.7kwh and ive even seen during flux charge period 15.7kwh being put into the battery (its stated 13.5kw on datasheet but says 15.96 in portal) and based on that info with 4.7kwh left in the battery its telling me there is 72% battery left.

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Last couple of days

8.5
8.9

It’s enough I suppose, not having batteries is something I may look at going forward to see if it’s even worth it
 
alphaomega16 said:
If you meant me I would have waited probably til I could have sorted more space in back garden for some panels as well, something that could be rotated/tilted perhaps but with no roof to get in the way and being lower it probably wouldn't be needed.

I am regretting battery storage atm with all the SOC issues im having, considering it has a gateway home backup system the battery being unreliable is a joke, atm for a 13.5kw battery that from 5% flat (thats the reserve) to 100% ive seen 14.7kwh and ive even seen during flux charge period 15.7kwh being put into the battery (its stated 13.5kw on datasheet but says 15.96 in portal) and based on that info with 4.7kwh left in the battery its telling me there is 72% battery left.


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You can get active arrays (typically 4 panels I have seen) they either track slowly E to W to follow the sun, or that as well as pitch in order to cater for lower winter sun.
They are around 50% higher annual production than pure S facing panels.

You obviously need a spots that pretty unobscured from E to W and ideally from NE to NW (the long way round)

They are a little pricey. Must admit if the plan of a house with more land comes off in a few years, I would 100% go for something 3 x 4 panel active setups.
Nice and easy to replace the panels as well if some new tech suddenly increases the efficiency by say 5-10%
 
Todays the day…..the new panels are all connected up, just need to get on the extension roof now and feed the cables up into the attic, for final connection to the inverter. Hopefully just after lunch we will be connected. 12 x 405w panels all facing near enough south.


access to the soffets from the inside stops play…….whoever rebuilt the roof and soffets a few years before we bought it, has timberd the inside, so we cant get to the soffets when i removed all the thermal insulation. Bloody buggers…..need to drill out from the inside now and down the eve end and dont have a powerful enough drill to do it with….
 
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alphaomega16 said:
If you meant me I would have waited probably til I could have sorted more space in back garden for some panels as well, something that could be rotated/tilted perhaps but with no roof to get in the way and being lower it probably wouldn't be needed.

I am regretting battery storage atm with all the SOC issues im having, considering it has a gateway home backup system the battery being unreliable is a joke, atm for a 13.5kw battery that from 5% flat (thats the reserve) to 100% ive seen 14.7kwh and ive even seen during flux charge period 15.7kwh being put into the battery (its stated 13.5kw on datasheet but says 15.96 in portal) and based on that info with 4.7kwh left in the battery its telling me there is 72% battery left.

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Thanks for the info. Will have a read. Debating how big to go in a self build. Will have air source heat pump so frankly the bigger the better. Pitch will be SW to NE in the south west of England. Roof space on the southern side should be roughly 65 SQM so in theory I can fit 20+ panels to make up 8kw. My only thought is to add panels to the NE aspect, maybe 4kw, which in practice might be more like 2kw effective. 20kw battery would get us through 8-9 months energy free and hopefully in winter we can make some dent in the bill.

I like the idea of a ground install but my plot is 650sqm so not quite big enough without shade from trees and buildings. I may be able to use the garage for the 4kw as it's aspect will be E rather than the NE aspect of the house, and would presumably be more efficient.
 
SpeedFreak said:
Thanks for the info. Will have a read. Debating how big to go in a self build. Will have air source heat pump so frankly the bigger the better. Pitch will be SW to NE in the south west of England. Roof space on the southern side should be roughly 65 SQM so in theory I can fit 20+ panels to make up 8kw. My only thought is to add panels to the NE aspect, maybe 4kw, which in practice might be more like 2kw effective. 20kw battery would get us through 8-9 months energy free and hopefully in winter we can make some dent in the bill.

I like the idea of a ground install but my plot is 650sqm so not quite big enough without shade from trees and buildings. I may be able to use the garage for the 4kw as it's aspect will be E rather than the NE aspect of the house, and would presumably be more efficient.
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The thread over on forums is "Battery Calibration" as it started off with me not getting the message the battery calibration had been completed after a few days but all the info on that is in there as well, apparently GE said it was done but somehow didn't get the message.

Edit
15.6 Generation with 10.2 Export, bit of a weird afternoon lol
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