Feed-In

Feed-in refers to the process in photovoltaics where the direct current generated by a solar system is fed into the public electricity grid. This process is crucial for utilizing solar energy, as it allows for excess solar power to be fed back into the grid, providing a financial return on the investment in a photovoltaic system.

The Feed-in Process

1. Conversion: The direct current generated by the solar panels must first be converted into alternating current, as the public electricity grid operates on alternating current. This task is handled by an inverter.
2. Meter: A so-called feed-in meter measures the amount of electricity fed into the grid.
3. Grid Connection: The electricity is fed into the public electricity grid through the grid connection.

Legal Framework and Compensation

The feed-in of solar electricity is regulated by law in Germany and many other countries. The respective laws define the technical requirements for photovoltaic systems, the feed-in conditions, and the compensation for the fed-in electricity.

Compensation for fed-in solar electricity is usually provided through the so-called feed-in law. The amount of compensation depends on various factors, such as the installed capacity of the system, the time of commissioning, and current market prices for electricity.

Advantages of Feed-in

• Financial Returns: Through feed-in compensation, system operators can recoup part of their investment costs.
• Stability of the Power Grid: Photovoltaic systems can contribute to stabilizing the power grid, especially during times of high solar radiation.
• Climate Protection: By utilizing solar energy, fossil fuels are conserved, thereby reducing greenhouse gas emissions.

Keywords: Photovoltaics, Solar Electricity, Inverter, Feed-in Meter, Grid Connection, Feed-in Compensation, Renewable Energies, Grid Stability