Netzkontor GmbH

Grid Level 4 Explained

Grid Level 4 (NE4) refers to the high-voltage grid, which typically operates at a voltage level of 110 kV. It connects the supraregional extra-high-voltage grid (Grid Level 2) with the regional distribution grids of Grid Level 5, thereby playing a crucial role in ensuring a safe and reliable electricity supply.

What does NE4 encompass?

NE4 begins at the substations where electrical energy from the extra-high-voltage grid is stepped up to the high-voltage level. From there, the electricity is transported via high-voltage transmission lines to other substations, where the voltage is then stepped down to lower voltage levels for regional distribution. This infrastructure ensures that electrical energy is delivered reliably and efficiently to the regional service areas.

Why is the NE4 so important?

A high-performance Grid Level 4 is crucial for a secure and stable electricity supply. It ensures the reliable transmission of large amounts of energy over long distances and forms the link between the supraregional transmission grid and the regional distribution grids. A modern and well-developed high-voltage infrastructure contributes significantly to security of supply and the integration of renewable energy into the power grid.

Who is responsible for the NE4?

Regional distribution system operators are generally responsible for Grid Level 4. They plan, operate, maintain, and modernize the high-voltage grids and ensure that electrical energy is transmitted safely and reliably to the downstream grid levels.