Good morning,
Yesterday, we received a quote for a photovoltaic system. Our construction of the single-family house will start in October 2023 and is expected to be ready for occupancy in September 2024.
We have an annual electricity consumption of about 3000 kWh for our household, plus an unknown amount for the air-to-water heat pump (Weishaupt Biblock).
Our roof is oriented exactly south with a 25° pitch (gable roof). According to the calculation in the quote, the entire south roof is fully covered with modules (20 units), and the north roof is also equipped with 5 modules.
Attached you will find the details of the quote. The price is €20,900 net with battery storage and €15,900 net without storage.
What do you think of the offer? From what I understand in the discussions here on the forum, it is advisable to skip the battery storage. That would bring the cost to just under €16,000, which is a bit over €1,600 per kWp. That seems relatively expensive, doesn’t it?
Thank you very much in advance for your help.
Best regards,
Elias
Yesterday, we received a quote for a photovoltaic system. Our construction of the single-family house will start in October 2023 and is expected to be ready for occupancy in September 2024.
We have an annual electricity consumption of about 3000 kWh for our household, plus an unknown amount for the air-to-water heat pump (Weishaupt Biblock).
Our roof is oriented exactly south with a 25° pitch (gable roof). According to the calculation in the quote, the entire south roof is fully covered with modules (20 units), and the north roof is also equipped with 5 modules.
Attached you will find the details of the quote. The price is €20,900 net with battery storage and €15,900 net without storage.
What do you think of the offer? From what I understand in the discussions here on the forum, it is advisable to skip the battery storage. That would bring the cost to just under €16,000, which is a bit over €1,600 per kWp. That seems relatively expensive, doesn’t it?
Thank you very much in advance for your help.
Best regards,
Elias
S
sergutsch30 Apr 2022 10:18I believe that Snowy36 was referring to the fire hazard and does not want the source inside the house (basement).
That was clear to me and certainly a valid point. Without in-depth technical knowledge, I would reasonably assume that the likelihood of faults decreases significantly under good environmental conditions. At least in practice, I have never heard of a battery self-igniting. If it is drained, frozen at -20°C (−4°F), and covered with frost, I would rather expect any kind of defect to occur earlier, including on the circuit boards. But perhaps the battery experts know better.
R
RotorMotor30 Apr 2022 13:26LiFePO batteries are generally considered safe. However, they should not be exposed to frost, especially not while being charged!
sergutsch schrieb:
I believe that Snowy36 meant the fire hazard and does not want the source inside the house (basement). Yes, that’s correct… I’m just referring to the e-bike battery incidents you hear about… I don’t know how realistic it is, but it helps me sleep better.
D
Deliverer30 Apr 2022 16:09This can happen occasionally, although it is extremely rare.
It is always a good idea to avoid storing combustible materials near the storage area.
For e-bike batteries (where this is not quite as rare for various reasons), there are fireproof boxes or cabinets available for charging them safely inside.
It is always a good idea to avoid storing combustible materials near the storage area.
For e-bike batteries (where this is not quite as rare for various reasons), there are fireproof boxes or cabinets available for charging them safely inside.
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