ᐅ Is it beneficial to prepare for photovoltaic systems during new construction?

Hello

I have another question regarding the photovoltaic system.
We will have a northeast and southwest roof orientation. (The southwest side even without windows and satellite dish) (new build)

The problem is that we want to install the photovoltaic system at a later time (quite high costs and we do not have very high self-consumption).

We will not have a heat pump, as we are connected to a local heating network.

We thought about having it installed in a few years (maybe with the first electric car or when we have enough surplus and it makes sense for us) and prioritize other things for now (the developer won’t include it anyway, and it would have to be installed by another company after handover).

In the garden, exactly below the southwest roof, we want to build a fixed patio roof, 5 m (16 feet) wide and 4 m (13 feet) deep. (The semi-detached house will be 6 m (20 feet) wide).

How is a photovoltaic system generally installed? Do they need to set up scaffolding? (which would not be possible because of the patio roof) or are there other ways to install it?

Or does the photovoltaic system have to be installed before the patio roof? But how does maintenance or possible replacement work later if the patio roof is built after the photovoltaic system?

Hi
The feed-in tariff per kWh is decreasing every month. The cost of photovoltaic modules is also dropping, but since Berlin has now decided to require photovoltaic systems on every new building, demand will inevitably increase, which will likely push prices up.
If no cash is available, I would recommend financing and installing now. It is still cost-effective.

The construction will not be completed until 2023, so it is not possible immediately.

My main concern is whether I can go ahead with the patio roofing beforehand without any issues, or if I might have problems later when I want to install a photovoltaic system.

Pwnage619 schrieb:

My main concern is whether I can install the patio roof beforehand without any issues, or if I might face problems later when I want to install a photovoltaic system.

The patio cover is not a problem for the installers. If you use standard modules, a substructure will be installed, and the effort is relatively low.
I would definitely recommend installing conduit pipes up to the distribution board in advance. As for prices—material, services, electricity costs, feed-in tariffs, incentives—you can only guess or make an intuitive decision.
What is quite certain is that photovoltaic systems are worthwhile—both now and in three years—regardless of feed-in tariffs and even with low consumption.

We definitely want to install empty conduit. Does it matter on which side of the roof the conduit is placed, and what diameter should it have? We plan to run the conduit for the satellite dish on the northeast side of the roof and place the one for the photovoltaic system next to it, as this is the simplest and shortest route to the technical room.

In my experience, appropriate fall protection is required, and scaffolding is also needed on the gable ends, at least when the occupational safety authorities conduct thorough inspections. It is helpful if the photovoltaic system is installed directly on (or after) the roof while the scaffold is still in place. Either the roofer makes the necessary cuts in the tiles for the mounting hooks according to the installation plan right away, or the solar installer does this during or just before mounting the modules. Usually, coordination between the roofer and the solar installer does not work well, resulting in duplicated work.