ᐅ Consultation for photovoltaic system

Created on: 13 Sep 2021 14:52
P
Pacc666
Hello

we are planning a new semi-detached house.

We want to install a photovoltaic system later on.
We will get the right half shown in the photo. Orientation is southwest.

The photovoltaic system will of course be installed on the southwest side facing the garden.

The black area is the 3x5 m (10x16 ft) terrace, which will later be covered with a fixed terrace roof measuring 4 m (13 ft) deep and 5.5 m (18 ft) wide.

My question is whether it will still be possible to install a photovoltaic system on the roof once the fixed terrace roof is there?

If the terrace roof is on the southwest side in the garden, it will no longer be possible to set up scaffolding.
For maintenance or in case of problems, access to the photovoltaic system will be necessary later on (is access without scaffolding not possible?)

Or can the photovoltaic system be installed without scaffolding?

The house will have a gable roof and 2.5 full stories.

Architektonischer Grundrissplan mit grünem Liniennetz und rotem Gebäudeteil im Zentrum.
N
nordanney
14 Sep 2021 18:39
driver55 schrieb:

That still seems contradictory to me at the moment.
Instead of buying expensive electricity, I prefer to use cheaper solar power and SAVE money.
Anything I don’t use, I sell. It’s a nice setup. But in the first step, you do spend money, which you recover after a few years.
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RotorMotor
15 Sep 2021 08:27
hampshire schrieb:

You can calculate that.
Cool, please go ahead and do that.
H
hampshire
15 Sep 2021 08:35
RotorMotor schrieb:

Cool, go ahead and do that please.
Here you are again, still haven’t provided any constructive calculations or explanations but already casting doubts. Seems like you’ve fixed your mind on a few topics.
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RotorMotor
15 Sep 2021 08:55
hampshire schrieb:

There you are again, still no constructive calculation or explanation provided but sowing doubts. Seems like you have fixated on a few topics.

You often manage to catch my interest with "Calculations, Measurements, Scientific."
Unfortunately, disappointment follows every time because it stays at "It can be calculated," "It could be measured," "One could find scientific sources," but the real content is missing.
It therefore feels like a trick to support one’s own decisions and opinions with terms, a common tactic in politics but certainly not in science.
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halmi
15 Sep 2021 08:58
He is not entirely wrong; if you don’t get about two-thirds of the cost covered, it will be difficult for the system to be profitable.

The main issue is that the battery simply doesn’t get fully discharged overnight from April to October. My neighbor uses, if everything goes well, around 2-3 kWh at night, but by 7:30 am it is already fully recharged in summer. You just can’t achieve the number of cycles needed to become somewhat profitable. And in the darker months, you can’t fully charge the battery to take advantage of it.

If you calculate it with 200-220 cycles per year, the system can work, but it’s unfortunate when in reality you only reach around 100-120 cycles.
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nordanney
15 Sep 2021 09:26
halmi schrieb:

It’s simply impossible to complete the cycles needed to become even somewhat profitable.
The problem can easily be solved with an electric car. 😉