ᐅ Evaluating the Proposal and Technology of a Photovoltaic System
Created on: 30 Jan 2023 12:00
H
hanghaus2023
Hello,
I am planning to equip my house with a photovoltaic system.
Electricity consumption: 7100 kWh per year
Southwest orientation, roof pitch 45 degrees
Most affordable photovoltaic offer:
23 * modules
Jolywood JW-HD108N-420W (frame: black, backsheet: glass)
- Best price-performance ratio: high nominal power of 420 W per module and an efficiency of 21.51%.
- Linear power warranty for 30 years (minimum 87.4% after this period).
- 25 years product warranty from the manufacturer.
- Half-cut cells: two separate cell areas connected in series reduce shading losses.
- Front and back glass with anti-reflective technology.
23 * modules DC installation including scaffolding
1 * Sungrow SBR096 9.6 kWh
- High-voltage lithium iron phosphate battery with multi-level protection concept and comprehensive safety certifications.
- Up to 30A continuous charge and discharge current with high efficiency and 100% usable energy.
- Plug & Play, no wiring required between individual battery modules.
- Of the total price, €4,476.16 net is allocated to the battery storage.
1 * Sungrow Hybrid SH8.0RT
- Three-phase hybrid inverter for residential use.
- Fast charging/discharging to easily manage consumption peaks.
- High self-consumption through optimized integrated energy management system.
- Remote firmware updates and customizable settings.
- Quick and easy installation, commissioning via smartphone.
1 * AC installation for Sungrow SBR096 9.6 kWh battery with Sungrow inverter(s)
According to the provider, the meter cabinet does not incur any additional costs.
Note:
The cost for the required additional electricity meter is not included in the purchase price. Your local grid operator is responsible for installing this meter and will charge you separately for this service.
Net price: €26,192
The provider is relatively new to the market and has 150 ***** reviews on Google.
Previously, I received offers with lower specifications starting above €50,000.
Is there anything to consider regarding taxes?
Honestly, I have no expertise in this area. Is there an expert here who can technically and financially evaluate the most affordable offer for me?
Thank you very much for your help from
hanghaus2023
I am planning to equip my house with a photovoltaic system.
Electricity consumption: 7100 kWh per year
Southwest orientation, roof pitch 45 degrees
Most affordable photovoltaic offer:
23 * modules
Jolywood JW-HD108N-420W (frame: black, backsheet: glass)
- Best price-performance ratio: high nominal power of 420 W per module and an efficiency of 21.51%.
- Linear power warranty for 30 years (minimum 87.4% after this period).
- 25 years product warranty from the manufacturer.
- Half-cut cells: two separate cell areas connected in series reduce shading losses.
- Front and back glass with anti-reflective technology.
23 * modules DC installation including scaffolding
1 * Sungrow SBR096 9.6 kWh
- High-voltage lithium iron phosphate battery with multi-level protection concept and comprehensive safety certifications.
- Up to 30A continuous charge and discharge current with high efficiency and 100% usable energy.
- Plug & Play, no wiring required between individual battery modules.
- Of the total price, €4,476.16 net is allocated to the battery storage.
1 * Sungrow Hybrid SH8.0RT
- Three-phase hybrid inverter for residential use.
- Fast charging/discharging to easily manage consumption peaks.
- High self-consumption through optimized integrated energy management system.
- Remote firmware updates and customizable settings.
- Quick and easy installation, commissioning via smartphone.
1 * AC installation for Sungrow SBR096 9.6 kWh battery with Sungrow inverter(s)
According to the provider, the meter cabinet does not incur any additional costs.
Note:
The cost for the required additional electricity meter is not included in the purchase price. Your local grid operator is responsible for installing this meter and will charge you separately for this service.
Net price: €26,192
The provider is relatively new to the market and has 150 ***** reviews on Google.
Previously, I received offers with lower specifications starting above €50,000.
Is there anything to consider regarding taxes?
Honestly, I have no expertise in this area. Is there an expert here who can technically and financially evaluate the most affordable offer for me?
Thank you very much for your help from
hanghaus2023
hanghaus2023 schrieb:
@HnghusBY We are both in Bavaria, in the Upper Palatinate region.It's a pity, I had a tip for the Würzburg area. I really wouldn't give up and would keep looking.K
karl.jonas30 Jan 2023 22:36With the €26,000 (approximately $28,000) you should be able to fully cover the roof. Skip the attic space for now and keep requesting quotes until you get the right price. Prices are already dropping again as stock levels are increasing. If you really want an attic, have it included in the planning and buy it later when your budget is replenished (with plenty of sunshine, that can happen quickly 🙂 ).
H
hanghaus202330 Jan 2023 22:52HnghusBY schrieb:
It’s a pity, I would have had a tip for the Würzburg area. I really wouldn’t give up and keep looking.Würzburg isn’t that far anyway. I can reach out to him. Tell me what you have installed.H
hanghaus202317 Sep 2023 19:13System with 11.34 kWp installed. Now I am just waiting for the new meters, then the feed-in can start. Expansion by 5.26 kWp, storage, and wallbox are already planned. That will begin next year.
R
RotorMotor17 Sep 2023 21:02Why wasn’t the house fully finished from the start, with the other half added later?
It is possible to feed in electricity without a meter.
Why is an energy storage system planned to be added later?
It is possible to feed in electricity without a meter.
Why is an energy storage system planned to be added later?
I know that battery storage often gets criticized, but we have had ours running for three weeks now, and I have to say it is definitely worthwhile for us.
At the beginning, I did all the calculations, comparing the purchase price with the warranty, and then worked out how many cycles per year would be needed to break even within the warranty period. The number of cycles I calculated was already a rather conservative estimate for us — so I believed the chance of not reaching that was low.
It is currently late summer, the air conditioning is running, the car is charging, and there is no question of the battery not emptying. We manage to fully discharge it every night, and also fully recharge it every day.
We are curious to see how winter will be — especially since the demand for the air-to-water heat pump will increase. At the moment, it is only heating water, so the air conditioning is off. Whether the higher load and lower efficiency will mean we can no longer fully charge the battery remains to be seen. For now, the battery is already full by noon, so there is still plenty of room.
Even if there are fewer cycles in winter, I am optimistic for three quarters of the year.
At the beginning, I did all the calculations, comparing the purchase price with the warranty, and then worked out how many cycles per year would be needed to break even within the warranty period. The number of cycles I calculated was already a rather conservative estimate for us — so I believed the chance of not reaching that was low.
It is currently late summer, the air conditioning is running, the car is charging, and there is no question of the battery not emptying. We manage to fully discharge it every night, and also fully recharge it every day.
We are curious to see how winter will be — especially since the demand for the air-to-water heat pump will increase. At the moment, it is only heating water, so the air conditioning is off. Whether the higher load and lower efficiency will mean we can no longer fully charge the battery remains to be seen. For now, the battery is already full by noon, so there is still plenty of room.
Even if there are fewer cycles in winter, I am optimistic for three quarters of the year.
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