Netzkontor GmbH

Grid Level 5 Explained

Grid Level 5 (NE5) refers to the medium-voltage grid, which typically operates at voltages ranging from 1 kV to 36 kV (often 10 kV or 20 kV). It connects the high-voltage grid of Grid Level 4 with the local substations of Grid Level 6, thereby playing a central role in regional electricity distribution

What Does NE5 Encompass?

Grid Level 5 begins at the substations, where electrical energy is transformed from high voltage to medium voltage. From there, the electricity is transmitted via medium-voltage lines to local distribution substations as well as to larger industrial and commercial customers. At the local distribution substations, the voltage is then reduced to low voltage and fed into Grid Level 6.

Why is Level 5 so important?

A high-performance Grid Level 5 is crucial for a reliable regional electricity supply. It efficiently distributes electrical energy to cities, municipalities, and large consumers while also creating the conditions necessary for integrating renewable energy sources. A modern medium-voltage infrastructure contributes significantly to supply security and grid stability.

Who is responsible for the NE5?

Regional distribution system operators are generally responsible for Grid Level 5. They plan, operate, maintain, and modernize the medium-voltage grid and ensure that electrical energy is transmitted safely and reliably to downstream grid levels and to large electricity consumers.