ᐅ Photovoltaic system in a new build: Would you install one? Any experiences?
Created on: 27 May 2018 10:44
S
Skyfire
Hello everyone,
I am in the final stages of planning my house.
Here are the key details of the building:
- Location: Low mountain range
- House: Timber frame
KFW 55 --> Qp = 40.9 kWh/m² and H′T = 0.259 W/(m²K)
Thermal bridge loss = 0.038 W/(m²K)
Usable roof area: approx. 40 m² (430 sq ft)
- Roof pitch: 35 degrees gable roof
- Orientation: Southeast
- Roof window: 1 centered
- Heated building volume: 497.9 m³ (17,580 cu ft)
- Usable floor area: 159.3 m² (1,714 sq ft)
The heating system will be an air-to-water heat pump and a central controlled mechanical ventilation system with heat recovery.
At the moment, I am considering the possibility of installing a photovoltaic system.
Putting ecological considerations aside and focusing purely on economic factors, is a photovoltaic system worth it in the long term? Does it make sense to try to reduce heating and electricity costs with such a system?
I think the payback time will be quite long, and it provides the least output in winter when the heat pump consumes the most energy.
What are your thoughts on installing such a system? Would you build one?
Thank you very much.
Best regards,
Steffen
I am in the final stages of planning my house.
Here are the key details of the building:
- Location: Low mountain range
- House: Timber frame
KFW 55 --> Qp = 40.9 kWh/m² and H′T = 0.259 W/(m²K)
Thermal bridge loss = 0.038 W/(m²K)
Usable roof area: approx. 40 m² (430 sq ft)
- Roof pitch: 35 degrees gable roof
- Orientation: Southeast
- Roof window: 1 centered
- Heated building volume: 497.9 m³ (17,580 cu ft)
- Usable floor area: 159.3 m² (1,714 sq ft)
The heating system will be an air-to-water heat pump and a central controlled mechanical ventilation system with heat recovery.
At the moment, I am considering the possibility of installing a photovoltaic system.
Putting ecological considerations aside and focusing purely on economic factors, is a photovoltaic system worth it in the long term? Does it make sense to try to reduce heating and electricity costs with such a system?
I think the payback time will be quite long, and it provides the least output in winter when the heat pump consumes the most energy.
What are your thoughts on installing such a system? Would you build one?
Thank you very much.
Best regards,
Steffen
Just out of curiosity, I have a question: how does it actually work with photovoltaic systems and parental allowance? From what size is someone considered self-employed and therefore not eligible for parental allowance? Or is this always the case as soon as you have a photovoltaic system? (Background: a friend recently said that her partner doesn’t receive parental allowance because of the photovoltaic system registered in his name)
D
Deliverer18 Jun 2018 13:32More net income means more parental allowance, not less. Only the application process is more complicated. Whether self-employed or not does not matter initially.
H
hampshire18 Jun 2018 13:38Leo schrieb:
Too bad, are there any public price lists available from Autarq?I don’t have a price list from Autarq either, just a specific offer / order, but that’s the nature of the business:Many different types of carrier tiles can be used. We use Creaton Domino tiles, which are equipped with photovoltaic modules by Autarq. Prices vary depending on the type of tile and quantity. Of course, I no longer need to buy these tiles from the roofer.
The wiring is naturally different because each tile must be connected. It also varies depending on the roof shape and the positioning of the solar tiles.
The electronics used (energy manager, inverter, battery storage, etc.) depend on the system sizing.
I think it’s great that roofers and electricians receive good training and that someone provides on-site support.
We are installing a 10 kWp system using just under 90 sqm (970 sq ft) of roof area, facing south-southeast with a 27-degree roof pitch in the rather cloudy Oberberg district.
Zaba12 schrieb:
I also have an offer for IBC modules around 315 watts lying around. Not full black but black. I won’t see them anyway . 8.82 kWp for 1160€/kWp plus VAT minus 2% discount, so I stay under 10,000€ net for the system. Afterwards, the price was even reduced in the offer. But live and let live. I wouldn’t have made a fuss over 200€.
Having a photovoltaic system installed by a small solar installer who does it every few days is simply a waste of money. The same system was offered to me by a regional provider for 1390€/kWp. He wondered why I didn’t accept the offer. The offer sounds quite reasonable. I hope your system is running satisfactorily.
Not all regional providers have unreasonable offers. I also had an offer from a regional supplier that was very reasonable in price. However, their technical solution didn’t fit my roof perfectly either. The price- and technically optimal solution was then found and delivered by another provider who, through a roundabout way, was also local.
Deliverer schrieb:
More net income means more parental allowance, not less. Only the application process is more complicated. Whether self-employed or not doesn’t matter initially. This is only partly true. Income earned during the period when parental allowance is received (which probably includes the monthly payments from the grid operator) is deducted from the parental allowance and reduces it. However, there may be an exemption amount. I don’t know that off the top of my head.
D
Deliverer18 Jun 2018 14:33miho schrieb:
This is only partly true. Income during the period of parental allowance receipt (which likely includes the monthly payments from the grid operator) is counted towards the parental allowance and reduces it. However, there might be a tax-free allowance. I don’t know that off the top of my head.Indeed. Until now, I thought only the 30-hour limit applied. But apparently, the solar income is also taken into account. After taxes and loan repayments, it probably isn’t that much anyway, is it? And if needed, you can always schedule your parental leave for the winter!
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