Offer, evaluate photovoltaic system technology

Hello,

I plan to equip my house with a photovoltaic system.

Electricity consumption 7100 kW / year
South-West orientation DN 45 degrees

cheapest photovoltaic offer

23 * modules
Jolywood JW-HD108N-420W (frame: black, back side: glass)
- Best price-performance ratio: high rated power of 420 heat pump/module and an efficiency of 21.51%.
- Linear performance guarantee over 30 years (at least 87.4% after this period).
- 25 years product warranty from the manufacturer.
- Half-cut modules: shading losses can be minimized by two separate and connected wave areas in series.
- Front and back made of glass with anti-reflection technology.

23 * modules DC mounting incl. 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 the individual battery modules.
- Of the total price, €4,476.16 net is attributable to the power storage.

1 * Sungrow Hybrid SH8.0RT
- Three-phase hybrid inverter for residential homes.
- Fast charging/discharging for effortless handling of consumption peaks.
- High self-consumption through optimized integrated energy management system.
- Remote firmware updates and customizable settings.
- Fast and easy installation, commissioning with the smartphone.

1 * AC mounting Sungrow SBR096 9.6 kWh with Sungrow inverter(s)

Meter cabinet according to the provider’s opinion does not require additional costs.

Note:
The costs for the necessary additional electricity meter are not included in the purchase price. The installation of this electricity meter is the responsibility of your local grid operator, who will charge you separately for these costs.

Net €26,192

The provider is relatively new on the market and has 150 ***** reviews on Google.

Previously, I had offers with lower specifications starting at over 50k.

Is there anything tax-related to consider here?

Honestly, I have no knowledge of the subject. Is there an expert here who can technically and price-wise evaluate the cheapest offer for me?

Thank you very much for your help from

Hanghaus2023

420x23 modules are 9.66 kWp. If I subtract the price for the storage (does he mean the 4.4k only for the storage or storage+installation?) I get a price of €2248 net per kWp. That's really expensive in my opinion.

This is really expensive imho.

I think so too, but there is no cheaper offer.

I agree, but there is no cheaper offer.

Have you ever requested an offer somewhere without a storage system? Maybe some sort of mixed calculation is being used there? My sister recently received several kWp at, I think, 1500 net per kWp, but the order was placed just before the outbreak of war, so installation took correspondingly long because everyone is very busy. I don't know if prices are still in that range. But you read about it more often here in the forum.

Have you also requested an offer somewhere without storage?

Yes. Unfortunately, I have not received an offer yet.

The usual questions:
- Why is the consumption so high? Optimizing here benefits wallet and environment the most.
- Why only such a small photovoltaic system?
- Why such a large battery?
- Why is the inverter so small?
- How many offers have you obtained?