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
daniels87 schrieb:
How many kWp have you installed? And can you share your nationwide solar installer? Feel free to DM me. Thanks a lot!6.82 kWp (22*310W).
Photovoltaics have become a volume-driven business. Especially in new builds, these systems are installed incredibly quickly. It’s all about scale.
H
hampshire17 Jun 2018 21:48We hope that our house will be ready to move in by December. It is not finished yet. 10 kWp. Both the roofer and the electrician come from the Bergisches Land region – using local contractors is important to us. Autarq provides one day of consulting.
Self-building should not be a problem with low voltage.
Ah, I just noticed the question wasn’t directed at me. Sorry.
Self-building should not be a problem with low voltage.
Ah, I just noticed the question wasn’t directed at me. Sorry.
I have an offer for around 9 kWp at approximately 1,175 euros excluding VAT.
These would be black modules and the system does not include storage. A system does appeal to me, but it wasn’t originally planned and therefore was not included in the financing.
Let’s see what I make of it. Can anyone recommend large and reputable solar installers operating nationwide? I would like to get 1-2 alternative offers.
Thank you.
These would be black modules and the system does not include storage. A system does appeal to me, but it wasn’t originally planned and therefore was not included in the financing.
Let’s see what I make of it. Can anyone recommend large and reputable solar installers operating nationwide? I would like to get 1-2 alternative offers.
Thank you.
Skyfire schrieb:
So, I have a quote for about 9 kWp at approximately 1,175 euros excl. VAT. I think there might be a digit missing in the amount?
hampshire schrieb:
Unfortunately, I can’t give the exact amount (I promised our supplier). I estimate that a technically comparable 10 kWp photovoltaic system with standard panels and conventional mounting can be had for 25-30% less. You can find detailed info at Autarq. Too bad, do they have public price lists from Autarq?
If I cover my roof with Autarq, I save the cost of normal tiles. In that case, the additional cost compared to “normal” solar systems probably won’t be 25-30% anymore, right?
Skyfire schrieb:
I have a quote for about 9 kWp at approximately 1,175 euros per kWp excluding VAT.
These are black modules and the system does not include a battery storage. I’m interested in an installation, but it wasn’t originally planned and therefore wasn’t included in my financing.
We’ll see what I make of it. Can anyone recommend large, reputable national or regional solar installers? I would like to get 1 or 2 alternative quotes as well.
Thank youOf course, 1,175 euros per kWp excluding VAT.
I also have an offer for IBC modules with 315 watts available. They are not full black but black. I won’t see them anyway. 8.82 kWp for 1160 €/kWp plus VAT, minus a 2% discount, so the total system cost stays under 10,000 € net. Afterwards, the price was even lowered 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 only does it every few days is simply a waste of money. The same system was offered to me by a local supplier for 1390 €/kWp. He was surprised I didn’t accept the offer.
Having a photovoltaic system installed by a small solar installer who only does it every few days is simply a waste of money. The same system was offered to me by a local supplier for 1390 €/kWp. He was surprised I didn’t accept the offer.
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