ᐅ Photovoltaic Battery Storage – Market Overview and Fire Risk

Created on: 24 Oct 2022 00:21
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DASI90
Maybe some of you have seen the short report on SWR about the Senec batteries that literally went up in smoke. Unfortunately, my wife saw it too. The battery (Varta) is installed in the basement and is waiting for final installation by the electrician. She is starting to get cold feet and doesn’t feel comfortable having it installed. What do you think about this? Of course, it’s clear that any battery device can catch fire or explode, or that there is a higher risk of an electrical fire somewhere else. But I can’t deny that it is still a very large lithium battery that is almost impossible to control if it catches fire due to a short circuit or defect.

I’m asking for advice on what precautions can be taken or what your thoughts are on this. Does anyone know if in case of an incident this would be covered by the home insurance policy or if it needs to be reported separately?
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Snowy36
26 Oct 2022 17:28
That’s why we built a kind of insulated cabinet around our system, plus a frost guard … the temperature in the garage shouldn’t drop below 5°C (41°F) this way …

It had to be placed in the garage because the photovoltaic system is also installed on the garage roof …
DASI902 Nov 2022 12:11
Would you rather choose the 7.7 kW storage unit or the 10.2 kW storage unit from BYD? The price difference is a mere €2,000. However, unlike the 7.7 kW storage, the 10.2 kW unit is now available for delivery within one week. Currently, I could fully charge both storage units based on how much energy I feed into the grid daily.
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RotorMotor
2 Nov 2022 12:18
Roughly estimated: 2 kWh on 100 days per year at $0.40 -> $80/year.
2000€/$80 per year -> 25 years

I would go for the smaller one if it can be delivered within a reasonable timeframe.
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Fuchur
2 Nov 2022 19:23
I have the 10.2 and could still use a bit more. It’s really a question of the size of the photovoltaic system to ensure there’s enough left for storage.

Financially, retrofitting is difficult to justify at current prices. With VAT deduction, subsidies, and depreciation, the situation looks very different when purchased together.
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Snowy36
5 Nov 2022 17:41
Here is a photo of the cabinet for the battery storage system… The materials used are styrodur (extruded polystyrene foam) and drywall (plasterboard)… On the left, there is a frost guard installed, and on the right, the battery storage unit will be placed…

Teilweise montierte Werkstatt-Kabine aus grün-gelben Platten, Werkzeuge daneben.


Weißes Heizgerät an der Wand, daneben ein weißer Schrank; Metallregal mit Kleidung in der Garage.
Tolentino5 Nov 2022 21:14
Cool.
How is it in the summer? Do you open the cabinet then?

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