Lots of hours of sunshine but partly shady valleys: In the Black Forest, residents have their own aspects in mind when they decide to invest in a PV system. But is it worth buying in this environment? Here in this article we take a look at the criteria that need to be taken into account in the region.
The question of alignment
When deciding on the PV system, the orientation of the entire system is crucial. Ideally, it is a southwest-facing roof that receives light for many hours. With the exception of the pure north orientation, it is almost always possible to achieve a return.
In addition to the orientation, the size of the roof is responsible for whether the project is successful. The more area is equipped with modules, the better. There are suitable solutions for both pointed gable roofs and flat roofs. Tips for installation can be found here on this page.
Get a quick overview of the yield
Homeowners do not have to and should not leave it to chance whether their PV system is worthwhile. There are practical tools available online that make it possible to quickly get an overview of the yield. For this purpose, various data about the house, the roof and the size of the solar system are entered.
The postal code must also be specified. This is due to the fact that the location is largely responsible for the effectiveness of the system. Here it turns out The Black Forest as a good region. The Breisgau-Hochschwarzwald district is particularly impressive many hours of sunshine and therefore performs better than many other regions. Therefore, one can definitely speak of a location advantage.
Self-consumption remains crucial
When it comes to what to do with the electricity you produce yourself, you always have two options: feed it in or use it yourself. If you look at the raw numbers, feed-in is the less interesting choice. Because over the feed-in tariff Only around 9 cents per kWh can be earned.
Self-consumption performs significantly better: because a kWh of electricity that is consumed oneself did not have to be purchased at high cost from the supplier. These currently charge prices of around 40 cents per kWh. Anyone who increases their own consumption in the household as much as possible improves the economic balance of the system.
This is particularly possible with the help of electricity storage. This makes the sun's energy available exactly when it is needed. Depending on the size, the household can be supplied with electricity for several days. An electric car works in a similar way. This can also absorb and store excess electricity that would otherwise have been fed into the grid.
Financing the PV system
Now all that is missing is the necessary capital to fulfill the dream of a personal green energy source. Financing is best done with equity, which simplifies the entire project. If this is not possible, suitable funding options are available. For example, the state-run KfW subsidizes the approach and provides loans at reduced rates. If there are even larger economic differences, leasing your own roof can be an alternative to buying the system.
