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
X
xMisterDx19 Sep 2023 15:14No. The key is to only keep fossil fuel power plants or storage for 20-30% of the peak demand. Otherwise, it becomes unaffordable.
It’s similar to the A39 near Wolfsburg, which is completely submerged for 30-45 minutes twice a day, and the rest of the day, you could basically play football on it.
Besides, that would create a pretty tough two-class society, don’t you think? Those with money always get power, and those who are poor can only watch TV when the sun shines or the wind blows. That won’t work... and actually, it already doesn’t, according to survey results.
It’s similar to the A39 near Wolfsburg, which is completely submerged for 30-45 minutes twice a day, and the rest of the day, you could basically play football on it.
Besides, that would create a pretty tough two-class society, don’t you think? Those with money always get power, and those who are poor can only watch TV when the sun shines or the wind blows. That won’t work... and actually, it already doesn’t, according to survey results.
Again: It’s not about having no electricity at all! It’s about the fact that at certain times it is more expensive, just like today on the market. Fixed contracts are basically just the average plus a safety margin. Sure, that’s one way to do it. But with some regulation and smart behavior, flexible contracts can help save more. Those who don’t want to bother and are too lazy shouldn’t complain. That’s the point I want to make.
R
RotorMotor19 Sep 2023 15:27sysrun80 schrieb:
Again: It’s not about the power going out! It’s about it being more expensive at certain times more expensive , just like today on the market. All the fixed contracts are basically just the average price plus a safety margin. Sure, you can do that. But with some smart regulation and flexible contracts, you can actually save more. If someone doesn’t want that because they’re too lazy, they shouldn’t complain either. That’s my point. In theory, you might be right.
But in reality, it unfortunately doesn’t work… or only for very few.
kati1337 schrieb:
You don’t only discharge at night. For large parts of the year, you also discharge in the evening, at times when it’s supposedly most expensive according to Tibber. Expensive probably means high demand because everyone comes home from work and cooks, showers, watches TV, etc.
I do think this helps relieve the grid. Let’s not argue about night or evening discharge now. ;-)
If you’re such a fan of batteries, then calculate what they actually bring economically.
Or show what a battery contributes to the environment.
Or show a charge and discharge curve, and then we can compare it with energy charts.
A battery would only benefit the grid if it’s controlled by the grid.
RotorMotor schrieb:
In theory, you might be right.
But in reality, that unfortunately doesn’t work… or only for very few.Interesting, it has been working for years already with our neighbors to the north.
R
RotorMotor19 Sep 2023 15:32sysrun80 schrieb:
Interesting, it has been working like that with the neighbors to the north for years. Be more specific.
Which country? What exactly works significantly better there from your point of view?
RotorMotor schrieb:
Be more specific.
Which country? What do you think works significantly better there than here? In Norway and Denmark, for example, dynamic electricity tariffs, including for residential power, are very common and widely accepted. A few months ago, I came across an article explaining how this supports the electrical grid and can prevent a costly and extensive expansion.
However, it seems the focus is more on why something does not work—even when others have already demonstrated its effectiveness. 😎
Similar topics