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
@andimann Of course, you’re right. It also depends a lot on the environment and life situation. I work from home and can take advantage of these fluctuations quite well. A battery storage system could also be smaller. The point is that both will happen: electricity prices will rise (grid expansion, etc.) and prices for storage systems will continue to fall.
Strictly financially speaking, building a house is always less advantageous compared to renting.
Strictly financially speaking, building a house is always less advantageous compared to renting.
X
xMisterDx19 Sep 2023 14:54Well, anyway. We did some rough calculations because we drive our vehicles 30,000 to 40,000 km (18,600 to 24,900 miles) per year, often over distances of 500 km (310 miles)... economically speaking, an electric car is currently not competitive compared to a diesel. The lower maintenance costs do not outweigh the higher purchase price, the longer travel time due to the lower average speed, and especially the paid charging breaks. Why I’m still getting one... well, you want to show that you are a highly innovative green company. In winter, I’ll probably curse it when I have to make the second charging stop just before Munich...
That electricity prices will rise is far from certain. The more green electricity there is on the grid, the cheaper it becomes, because operating costs are eliminated. Wind power costs nothing and doesn’t have to be shipped to us from Australia or Venezuela.
That electricity prices will rise is far from certain. The more green electricity there is on the grid, the cheaper it becomes, because operating costs are eliminated. Wind power costs nothing and doesn’t have to be shipped to us from Australia or Venezuela.
xMisterDx schrieb:
It is far from certain that electricity prices will rise. The more green electricity is in the grid, the cheaper it becomes, since operational costs disappear. Wind power costs nothing and it does not need to be shipped to us from Australia or Venezuela.Correct, but that is only part of the price. That’s why energy storage (whether in cars, private homes, large-scale facilities, etc.) and changed user behavior are becoming increasingly important to avoid having to start up power plants at peak times.
RotorMotor schrieb:
I find it completely baffling how storage systems could be subsidized with public funds without being fully grid-friendly.
Looking at the fact that most private storage units are just charged up in the morning and then discharged at night actually causes more problems for the grid during the morning hours than it helps. :-( You don’t only discharge at night. For large parts of the year, you also discharge in the evening, at times when it’s reportedly most expensive according to Tibber. Expensive probably means high demand, since everyone comes home from work and cooks, showers, watches TV, etc.
I do think this helps to ease the load on the grid.
X
xMisterDx19 Sep 2023 15:00Smart grids are essential for economically covering 100% of energy needs from “unreliable” sources. However, this also means that sometimes you might not be able to run the washing machine for a day when the well-known “dark doldrums” occur. Or the heat pump might have to be turned off for half a day, provided the outdoor temperature is not below -15°C (5°F).
I don’t think a significant number of citizens in Germany are currently willing to accept this. This is also reflected in the survey results for AfD, Free Voters, and CDU.
I don’t think a significant number of citizens in Germany are currently willing to accept this. This is also reflected in the survey results for AfD, Free Voters, and CDU.
xMisterDx schrieb:
Smart grids are essential if you want to reliably cover 100% of your energy needs from "unreliable" sources economically.
But that also means you sometimes can’t run the washing machine for a day during the well-known dark doldrums. Or that the heat pump might be switched off for half a day in such cases, unless it’s below -15°C (5°F) outside.
I don’t think a significant number of people in the country are currently ready for that. The survey results for AfD, Free Voters, and CDU reflect this as well. Don’t see it so negatively!
Of course, you can run the washing machine whenever you want — but then it will just cost you more! And with the heat pump, it’s basically the same deal — that’s why there are special discount tariffs where the utility can switch the device off for a few hours during peak times. If you don’t want that, you just choose a more expensive contract or a variable tariff with a smart control system.
The trick is to minimize the use of fossil fuel power plants. Of course, we have to keep them available and use them when the dark doldrums really hit.
So when people start running their washing machines when electricity is available (and therefore cheaper), daily demand peaks become less pronounced. And since people here like to read discount flyers and make lists to save 5 cents, that’s actually a great point to regulate consumption. This change will happen, it has to!
Similar topics