Hello. We would also like to install a photovoltaic system and currently have three quotes. So far, we have received two, and the third one is still being prepared.
A local provider offered us the following:
40 x 410 W mono S4 half-cut modules = 16.4 kWp
Q.HOME+ ESS HYB- G3 3-phase 15.0 kWp inverter & 6.0 kW battery storage
Including installation, scaffolding, new distribution board, grounding rod, equipotential bonding bar, and all formalities and registration for just under €29,400.
The modules are arranged facing south-southwest and some towards northeast.
The second offer is almost the same price but has significantly lower kWp and comes from a company operating nationwide in Germany.
Do you think this is reasonable? I personally find it still quite expensive and am curious about the third offer. Are the components okay?
A local provider offered us the following:
40 x 410 W mono S4 half-cut modules = 16.4 kWp
Q.HOME+ ESS HYB- G3 3-phase 15.0 kWp inverter & 6.0 kW battery storage
Including installation, scaffolding, new distribution board, grounding rod, equipotential bonding bar, and all formalities and registration for just under €29,400.
The modules are arranged facing south-southwest and some towards northeast.
The second offer is almost the same price but has significantly lower kWp and comes from a company operating nationwide in Germany.
Do you think this is reasonable? I personally find it still quite expensive and am curious about the third offer. Are the components okay?
Don’t get me wrong, we will probably buy a battery storage system as well. But our 12.8 kW (12.8 kW) battery costs us only about 6,900 and comes with a 10-year warranty. Our usage profile is ideal. Because we work from home, we consume a lot of electricity during the day. As gamers and people who eat warm meals in the evening, we also use quite a bit of power after sunset. On top of that, we have a heat pump, air conditioning in summer, and an electric car. Since we don’t use the electric car for commuting but rather for everyday and occasional trips, we can charge it flexibly whenever surplus energy is available. Therefore, we hope to actually reach 200 cycles with the battery, so it pays off before the warranty expires. Anything beyond that—even with reduced capacity—I consider pure profit. =)
Still, this is an experiment for us. Whether it pays off within 10 years largely depends on the development of electricity prices, feed-in tariffs, and the actual usage rate and durability.
Still, this is an experiment for us. Whether it pays off within 10 years largely depends on the development of electricity prices, feed-in tariffs, and the actual usage rate and durability.
kbt09 schrieb:
@kati1337 ... it would be very interesting if you could start a new thread here with your experiences after commissioning, including any changes in usage behavior, etc. I would really appreciate that 😎I would be the last person to need to be asked twice to start a new thread. 😎Storage systems are currently becoming significantly cheaper, as long as they don’t have a premium brand name. The same applies to modules and inverters.
Recently, I’ve seen some for around 250€/kWh (approximately 250 USD/kWh). At that price, even building your own system no longer makes financial sense.
Recently, I’ve seen some for around 250€/kWh (approximately 250 USD/kWh). At that price, even building your own system no longer makes financial sense.
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xMisterDx6 May 2023 12:16Storage systems are and will remain pointless 😉
In summer, they fill up after 2 days and hardly empty again... and in winter, they don’t charge at all because the energy produced goes straight to the heat pump.
Besides that, I know it’s annoying... but it should become standard that the unit for storage capacity is kWh, not kW. The storage stores energy, not power.
Only crazy people build their own storage systems anyway. If it catches fire and takes the house with it, no insurance on this planet will pay a single cent.
In summer, they fill up after 2 days and hardly empty again... and in winter, they don’t charge at all because the energy produced goes straight to the heat pump.
Besides that, I know it’s annoying... but it should become standard that the unit for storage capacity is kWh, not kW. The storage stores energy, not power.
Only crazy people build their own storage systems anyway. If it catches fire and takes the house with it, no insurance on this planet will pay a single cent.
I can’t provide long-term experience yet, but this is the current situation for us:
37.4 kWp installed module capacity. East/West orientation.
This means only 50% of the panels are ideally exposed to sunlight.
Both roof sides are fully occupied.
The highest output occurred on lightly cloudy days, reaching up to 27 kW due to reflection.
We don’t have a storage system. Now in April/May, the system produces so much electricity that we still draw about 20-30% of our power from the grid.
Our daily consumption in spring is between 8 and 14 kWh (KfW40 standard).
Between 6 a.m. and 7:30/8:00 p.m., the system basically covers the entire electricity demand. (Northern Germany)
We paid around 1,150 EUR net per kWp at the end of 2022.
The images show heavy cloud cover and rain (May 6) as well as sunshine (April 29).
37.4 kWp installed module capacity. East/West orientation.
This means only 50% of the panels are ideally exposed to sunlight.
Both roof sides are fully occupied.
The highest output occurred on lightly cloudy days, reaching up to 27 kW due to reflection.
We don’t have a storage system. Now in April/May, the system produces so much electricity that we still draw about 20-30% of our power from the grid.
Our daily consumption in spring is between 8 and 14 kWh (KfW40 standard).
Between 6 a.m. and 7:30/8:00 p.m., the system basically covers the entire electricity demand. (Northern Germany)
We paid around 1,150 EUR net per kWp at the end of 2022.
The images show heavy cloud cover and rain (May 6) as well as sunshine (April 29).
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