Photovoltaics
Energy from the sun — effectively used
Today, solar energy is an essential component of renewable energy generation. Together with surface heating, it becomes independence.
In principle, solar energy is quite simple
Today, solar energy is an essential component of renewable energy generation. The topic is also becoming increasingly important for homeowners and tenants: in Germany alone, more than 1.8 million photovoltaic systems are already converting the radiant energy of sunlight into usable solar power on many house roofs.
When sunlight falls on a solar cell, an electrical voltage is generated in it, which is conducted via a power line to the solar generator. The generator converts the energy into direct current, which in turn is converted into usable alternating current via the inverter. The solar electricity is then either consumed directly, stored for later consumption, or fed into the public grid.
Structure of a solar cell
A photovoltaic system consists of several connected components, with the solar cells forming the core. These are covered with a very thin layer of silicon which becomes conductive through light and heat. Their blue colour comes from the uppermost anti-reflective layer, which prevents the reflection of sunlight.
In two other layers, impurities of the silicon layer with phosphorus or boron create a surplus of electrons, while the rest of the cell is deficient. In this way, negative and positive poles are created in the solar cell, just like in a battery. When the photons contained in the sunlight hit the silicon, they release the negatively charged electrons. These are attracted to the positively charged silicon grid on the back. Since the built-in boundary layer prevents a direct connection, the electrons have to take the path via the power line — and generate electricity through their movement.
Advantages of a photovoltaic system
- Quick and easy installation
- Provides you with electricity and supports you
- Financial support from the state
- Produces no pollution, no emissions
- No dependence on fluctuating gas and oil prices
- Contains no pollutants
- Easy to use
- Control via app on your mobile phone
Only together does it add up to independence
A surface heating system that runs on electricity, and a roof that generates electricity: in this combination it is the cleanest and cheapest way to heat — independent of any energy price development.
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We look at your house, work through the comparison and tell you which building blocks pay off in your case — and which do not.