ᐅ Photovoltaic Systems: Advantages, Disadvantages, Experiences, and Is It Worthwhile?

Bau_Bambi schrieb:

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@Lumpi_LE Actually, my main concern is self-consumption; I wasn’t aware of taxes on feed-in – is feed-in mandatory?

There is a common misconception that it’s better to avoid feeding electricity into the grid and instead consume as much as possible yourself. It would be a mistake to forgo the guaranteed 12 cents per kWh feed-in tariff! Currently, photovoltaic system owners are guaranteed a payment of 12 cents per kWh for their fed-in electricity for 20 years.

Self-consumption is just the cherry on top. By consuming your own electricity, you save around 30 cents per kWh. However, you do not get 12 cents for the electricity you consume yourself. This means that for each kWh self-consumed, you effectively save about 18 cents per kWh. This increases your return on investment and shortens the payback period.

Ideally, you would consume everything yourself and not draw any power from the grid. But that’s unrealistic. In summer, you usually have a large surplus because your electricity usage is low. In winter, the solar system doesn’t generate enough to cover your higher consumption. A battery storage system only makes sense for summer, when you can use the excess electricity generated during the day at night. In winter, the few kWh produced during the day are typically consumed immediately, so there is little or nothing left to store.

Additionally, battery storage is currently still so expensive that it doesn’t pay off just by saving nighttime consumption. You only save about 18 cents per kWh...

Hello everyone,
who is responsible for the installation... the electrician in cooperation with the plumber or the roofer?

And what is the current cost for the installation at 6kWP?

Nowadays, countless trades offer this service. The full-time professional is called a solar installer.

Maximum 1200€ net per kWp.

guckuck2 schrieb:

By now, countless trades offer this. The full-time professional is called a solar installer.

Max. 1200€ net per kWp.

Would this include installation, or is that extra?

lin0r87 schrieb:

Would this include installation, or is it extra?

completely turnkey

seth0487 schrieb:

Ideally, you would use everything you generate yourself and not draw any power from the grid. But that is unrealistic. In summer, you usually have a large surplus because your electricity consumption is low. And in winter, your rooftop system doesn't produce enough to cover your higher electricity demand.

But isn’t it true that photovoltaic panels, as long as they are not covered by snow, can actually produce more energy on a sunny winter day than at 35°C (95°F) in summer? My electrician explained that the panels heat up so much in summer that their efficiency decreases.