The solar heater supports conventional heating technology with free solar heat. Since more energy is needed here, the design of the collectors is usually larger. The size of the surface depends on the individual conditions and the desired solar content. The Solar Panels Claims are there also. If homeowners want to purchase solar panels, they can roughly count on the following value:
1.0 square meters of collector area per 10.0 square meters of heated building area
Since not every house is the same and the requirements for such a system can vary greatly, we also recommend an individual consultation here. This is the only way to find the optimum collector surface.
Costs for collectors of a solar system
Before homeowners buy solar panels, the price is a crucial criterion. Comparing this with flat and evacuated tube collectors, this reflects above all the performance of the components. Relative to one square meter, the costs with installation and accessories are as follows:
Flat-plate collectors cost around 300 to 500 dollars per square meter
Vacuum tube collectors cost around 500 to 600 dollars per square meter
Funding for the solar panels purchase
Since solar systems are particularly environmentally friendly, the state supports its installation with high subsidies through the Federal Office of Economics and Export Control. If homeowners want to purchase solar panels, they benefit mainly from the old building. Grants in new buildings are only available under certain conditions. Thus, a solar system is designed to be larger and build on a building with at least three residential units. For installation in detached and semi-detached houses, the solar heat must make up at least 50 percent of the heating energy. Both in the old building and the new building there is the promotion only if a buffer tank is installed.
At least 500 dollars for hot water solar systems
For the installation of a hot water solar system in existing buildings, there is currently at least $ 500 or $ 50 per square meter of collector area. There are even 100 dollars per square meter if homeowners buy particularly innovative solar panels. In the new building, the subsidy amount is then 75 dollars per square meter.
At least 2,000 dollars for solar thermal energy for heating support
If homeowners want to purchase solar panels to support the heating, they benefit from significantly higher subsidies. Thus, the Federal Office of Economics and Export Control pays at least 2,000 dollars or 140 dollars per square meter in the building stock. For particularly innovative systems, on the other hand, there are 200 dollars per square meter in the old building and 150 dollars per square meter in the new building.
50 dollars per square meter for retrofitting
In the building stock alone, the Federal Office of Economics and Export Control pays 50 dollars per square meter when homeowners purchase aftermarket solar panels. The prerequisite for this is that they expand existing solar systems by at least four and a maximum of 40 square meters.
If homeowners want to purchase solar panels, numerous decisions have to be made. Because when it comes to the price, this depends not only on the type of collectors but also on the use of the solar system. There is also support from the Federal Office of Economics and Export Control, which lowers the investment with high subsidies.