Solar panels and battery - any real world recommendations?

Anyone else with a GivEnergy system noticing weird figures over the last few days? I'm showing a total generation of 80KWh on Tuesday (highest I've ever previously recorded in the peak of summer was about 35KWh). The area graph of production\usage looks about right, but the bar chart of production\battery\usage seems to have weird spikes now and again, and the total figures for the days are clearly incorrect for just about all the readings, like charge to battery of 10KWh in half an hour (8.2KWh battery, max charge rate of 3KW), or suddenly generating 9KWh in half an hour at 6pm.

I've seen a bit of talk about it on GivEnergy Facebook groups but nothing from GivEnergy themselves, seems to be showing on both the app and the website
 
Tavis75 said:
Anyone else with a GivEnergy system noticing weird figures over the last few days? I'm showing a total generation of 80KWh on Tuesday (highest I've ever previously recorded in the peak of summer was about 35KWh). The area graph of production\usage looks about right, but the bar chart of production\battery\usage seems to have weird spikes now and again, and the total figures for the days are clearly incorrect for just about all the readings, like charge to battery of 10KWh in half an hour (8.2KWh battery, max charge rate of 3KW), or suddenly generating 9KWh in half an hour at 6pm.

I've seen a bit of talk about it on GivEnergy Facebook groups but nothing from GivEnergy themselves, seems to be showing on both the app and the website
Click to expand...
yeah there's been some kind of bug with readings, it's carried through to GivTCP too
 
Yes, my numbers for yesterday seem to be off, 3 30 min blocks seems to have been triple counted and I’m also missing data from 3 30 min blocks.

To be honest, I seldom use the GE app these days, it’s all via home assistant.

Edit: I pull my solar generation from my Solis string inverter so my numbers in the production thread are correct.
 
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This is why you don't want to go to Heatable, £19k for a 13.5kWp system with just under 20 kWh of storage, although he did get a discount as he has a YouTube channel.

 
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What's depressing is a few people in the comments seem to think its a good price. I agree, it isn't, its expensive for the current market.

The Alpha stuff isn't that expensive either.

5kw hybrid inverter is £1400 and the 10kwh battery is £3400, so £9,600 on that. I didn't catch how many panels it was but it's around 30 for 13kwp, A Jinko 440w panel is £50 these days, so £1,500 there. Call it another £2,000 for mounting, cable and sundry items (very generous). So the installation which looks relatively simple so max 3/4 people over 2 days is costing £8000. It's only single story and a very shallow pitched roof so probably no scaffold needed either.

This is one of those YouTube gives a different spin on what is actually best for most people and themselves.

Take their heating situation, they'd be better off spending money on night storage heaters which they would 'charge up' on their cheap overnight EV tariff rather than using batteries to power direct electric heaters. Likewise for energy, if it wasn't for the constant £50 referrals from YouTube, they and their followers would likely be better off on Eon Next Drive for their energy, particularly with the night storage heaters because you get an extra hour.
 
Not without installing a 3.6kw inverter and then replacing it with a larger one later.

You’d need a G100 if you want to software limited install and an approved G100 inverter, the DNO may not accept it either.

What’s the issue with the G99?
 
So SGS came back with this

12 x JA Solar 445W panels
1 x GivEnergy 5kW Hybrid Gen 3 Inverter
1 x GivEnergy 9.5kW Gen 3 Battery

Bird proofing and scaffolding Inc

£11,338.71
 
That's very expensive. I paid about that for similar (though Fox instead of GivEnergy) back in late 2022.
 
I'm revisiting an idea to wall mount 6 panels on the south facing side of the house, I've got a spare input pair on my inverter so I think I just need to grab panels and cabling.

The bit that 's a bit o a minefield is the mounting system, I can project 200mm from the wall so I can get an 80 degree angle or so. However, trying to find an off the shelf right angle bracket to achieve this is proving a bit tricky.

Does anyone have any experience with this sort of setup?
 
randal said:
Does anyone have any experience with this sort of setup?
Click to expand...

Yes.



Worked out at 84 degrees IIRC



See from about this stage in my build thread, I purchased some brackets off ebay then modified them to make them shorter, and stronger.

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

Getting very close on my plan for my third solar install :D I've just popped round to our local City Plumbing, to see if I can get any discount off the web prices, got a little bit off, but minimal really, but every bit helps. For my NW roof array of 12 panels I've got these short listed...
forums.overclockers.co.uk forums.overclockers.co.uk
 
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