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?
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?
Fuchur schrieb:
I have the 10.2 and could still use a bit more. It’s really a matter of the size of the photovoltaic system, so there’s enough energy left to store.
Financially, retrofitting is difficult to justify at current prices. With VAT deduction, subsidies, and depreciation, it looks quite different when purchasing together.How much capacity do you have on your roof?
R
RotorMotor5 Nov 2022 21:25Fuchur schrieb:
I have the 10.2 and could handle a bit more. It’s really a matter of the size of the photovoltaic system so that there’s enough energy left to store.
Financially, upgrading is difficult to justify at current prices. With VAT deduction, subsidies, and depreciation, it looks quite different when purchased together. Currently, my system still provides enough. The “problem” with a worthwhile storage system is usually that you can’t (use it meaningfully) during summer, and in winter it isn’t full because the photovoltaic system produces little and the heat pump uses up all of it.
If you use 10 kWh every night, I think it would make more sense to focus on reducing consumption first.
RotorMotor schrieb:
If you use 10kWh every night, in my opinion you should focus more on reducing your consumption. Firstly, during transitional periods, there are days with temporarily poor weather. This means that overall, enough energy would have been generated, but it was fed into the grid while the battery was already being discharged early in the day due to bad weather.
Secondly, 10kWh disappears quickly in winter. At night, the heat pump runs for heating, and I already try to schedule hot water preparation strictly during the day. Maybe a quick dinner is cooked (considering when it gets dark...), and perhaps the washing machine or dishwasher is also used in the afternoon.
Since March 10, I have been completely self-sufficient, with yesterday being the first day of external power supply, because despite having over 28kWp, only 4.5kWh were produced due to the weather.
RotorMotor schrieb:
The "problem" with a cost-effective storage system is always that you can't (effectively) empty it during the summer, and in winter it doesn't get fully charged when the photovoltaic system produces little and the heat pump uses up what little there is. As of today for 2022: 1970 kWh discharged from the storage. For 2021, it was ultimately 2290 kWh, although the yield this year is already significantly higher than the entire 2021.
Tolentino schrieb:
Cool.
How is it in summer? Do you open the cabinet then?Why should we? The battery doesn’t generate any heat…B
Bausparfuchs11 Nov 2022 20:35So, today I generated 6 kWh from my 7 kWp system. My total daily consumption today, including hot water production, was 9 kWh. Self-consumption was 99 percent. Grid supply was 3 kWh.
Therefore, I find it a bit surprising if a 28 kWp system only produces 4.5 kWh.
Starting January 1, 2023, EnviaM will increase the basic electricity tariff from the current 28.85 to 48.06 cents per kWh. That is more than a 66 percent price increase.
With prices like these, every storage system and every kWh consumed from photovoltaic makes financial sense.
With my annual consumption of 5000 kWh, that would mean almost 2800 euros in electricity costs per year. With my photovoltaic system, it will probably only be around 500 euros. The system with storage would have paid for itself after just 5 years, instead of the planned 10 years.
Therefore, I find it a bit surprising if a 28 kWp system only produces 4.5 kWh.
Starting January 1, 2023, EnviaM will increase the basic electricity tariff from the current 28.85 to 48.06 cents per kWh. That is more than a 66 percent price increase.
With prices like these, every storage system and every kWh consumed from photovoltaic makes financial sense.
With my annual consumption of 5000 kWh, that would mean almost 2800 euros in electricity costs per year. With my photovoltaic system, it will probably only be around 500 euros. The system with storage would have paid for itself after just 5 years, instead of the planned 10 years.
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