Geldern Wind Farm SF6-Free Medium-Voltage Infrastructure

Levering av 20 MW transformator

Omexom Germany was selected to design and deliver the primary grid connection for the Geldern wind farm, which included installing a 20 MW power transformer in a custom housing and a transfer substation operating at 10 kV and 20 kV. The project scope covered the engineering of a complete medium-voltage infrastructure compliant with strict grid connection regulations, ensuring reliable operation for decades.

SF6-fri bryterteknologi utviklet

A key innovation of this project was the use of SF6-free switchgear, developed through collaboration between Omexom and Ormazabal. This technology employs vacuum-switching to eliminate SF6 gas, a potent greenhouse gas previously standard in medium-voltage switchgear, while maintaining compatibility with existing systems and meeting demanding technical requirements. Omexom managed parameterization, protection schemes, and testing of secondary and protection systems to guarantee system stability and security.

32 GWh årlig fornybar kraft

The Geldern wind farm, which has been connected to the grid since July 2025, is expected to generate approximately 32 GWh of renewable electricity annually, enough to supply around 9,000 households. This infrastructure model provides a replicable solution for sustainable grid connection, demonstrating that the energy transition requires both renewable power generation and environmentally conscious grid infrastructure.

Miljøgevinst med SF6-fri bryter

This SF6-free solution represents a significant environmental milestone for Grünwerke GmbH, a subsidiary of Stadtwerke Düsseldorf. It is their first deployment of SF6-free switchgear, contributing to greenhouse gas emission reductions in grid systems while ensuring reliable primary distribution. The project highlights the importance of reducing the carbon footprint of energy infrastructure in support of long-term climate protection goals.