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
One for the storage system. The BYD (Build your dreams) LVS is good and reasonably priced. However, delivery times are probably extremely long. Unfortunately, I was not able to get my preferred BYD HVS storage system.
There are many opponents of storage systems here, especially when the price per kWh exceeds €500 net. I am now in favor of storage systems if the price is acceptable (maximum €650 net per kWh). Of course, the capacity must also fit; I consider 8 kWh to be appropriate. If the budget is tight, it’s better to install more kWp solar panels on the roof rather than a larger storage system. Otherwise, both pay off on their own!
There are many opponents of storage systems here, especially when the price per kWh exceeds €500 net. I am now in favor of storage systems if the price is acceptable (maximum €650 net per kWh). Of course, the capacity must also fit; I consider 8 kWh to be appropriate. If the budget is tight, it’s better to install more kWp solar panels on the roof rather than a larger storage system. Otherwise, both pay off on their own!
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Elias_dee22 Apr 2022 20:34i_b_n_a_n schrieb:
One thing about storage systems. The BYD (Build your dreams) LVS is good and reasonably priced. However, the delivery times are probably extremely long. Unfortunately, I wasn’t able to get my preferred BYD HVS storage system.
There are many opponents of storage here, especially when the price per kWh exceeds €500 net. I am now in favor of storage if the price is acceptable (max. €650 net per kWh). The size also needs to fit properly; I consider 8 kWh (about 8.5 kWh) to be suitable. But if the budget is tight, it’s better to install more kWp on the roof than to invest in storage. Otherwise, both will pay off on their own! Thanks for the advice. I’m still debating whether a storage system makes sense. We’re planning to install a sauna with a 9 kW heater. For something like that, a storage system does seem useful, right? If you go to the sauna after work in the evening and run the heater for an hour, you could basically “use up” the energy from the sun during the day for free in the evening...
No, forget that. The power from the battery is meant to last from 6:00 PM to 8:00 PM until the morning. Basically, for the time when there is no supply from above. If you empty the storage with a sauna stove (which usually runs for at least 1 hour!), you will have to draw power from the grid for the house.
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Elias_dee22 Apr 2022 20:41i_b_n_a_n schrieb:
No, forget that. The electricity from the battery is meant for 6:00 PM to 8:00 PM until morning. Basically for the time when nothing is coming from above. If you drain the storage with a sauna heater (which usually runs for at least 1 hour!), you have to draw power for the house from the grid. Isn’t that basically six of one, half a dozen of the other? Example calculation: I need 10 kW for the sauna from 6:00 PM until morning and another 10 kW for the house. Whether 10 kW for the sauna comes from the storage and then 10 kW for the house from the grid, or vice versa — it costs the same, right?
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Elias_dee22 Apr 2022 22:10i_b_n_a_n schrieb:
Exactly. But then the electricity for using the sauna just isn’t free 😉True, you’re right about that too :pSimilar topics