ᐅ Experiences with photovoltaic systems including battery storage?

Created on: 11 Dec 2022 13:53
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Robvoi79
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Robvoi79
11 Dec 2022 13:53
Hello everyone,

I want to have a photovoltaic system installed. It’s a mid-terrace house, with a storage battery and island (off-grid) operation.
I have now received an offer for a system with panels on the south and north sides.

I only have limited knowledge about this topic, so it would be great if someone with expertise could give a rough assessment of the offer.
Just whether it is generally okay and makes sense.

There is a “decision support” document and the offer itself. I have already noticed in the amortization calculation that the “price cap” for the electricity rate has not been considered.

Thank you in advance if anyone takes the time to answer my question.

Thanks
Robert
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SoL
11 Dec 2022 14:04
Links are harmful; please upload the files here.
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Robvoi79
11 Dec 2022 14:17
OK. Thanks for the note.
Here is the attachment for the post.

Thank you!

Offer for home power system with solar modules, mounting structure, and price overview in table


Invoice table with items, quantities, and prices (S10 Mini M4 AI6.5, connection set, installation)


Grid connection and meter cabinet cost breakdown with subtotal and total amount.


Overview of PV system: output 8.36 kWpeak, total cost 20,230.00 €, yield and savings.
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RotorMotor
11 Dec 2022 14:33
The offer doesn’t seem particularly cheap at first, but it’s also not overly expensive given the current situation.
What condition is your meter cabinet in?
They are asking for 1380 and then another 2200 on top of that.

I find the payback calculation rather questionable.
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Fuchur
11 Dec 2022 14:41
The assumed feed-in tariff is likely incorrect as well
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Robvoi79
11 Dec 2022 14:43
There is still plenty of space in the meter cabinet. It’s quite large, and half of it is free.

I would still need to arrange an on-site inspection. The initial offer was based only on photos.

What also puts me off a bit is the staged payment. Then something might not be deliverable, and I would have already made a down payment.

He won’t be able to start construction before the middle of next year anyway. But I would have to make the down payments...

Regarding the payback period... if it even happens, I’ll be satisfied. The question is whether that will be the case.