Future-Ready Substation at Borealis Kallo for ENGIE Belgium

Reeload has commissioned Belgium’s first SF₆-free high-voltage substation at Borealis Kallo, reinforcing ENGIE Belgium’s solar carport project with clean and future-ready infrastructure. The prefabricated installation is equipped with Siemens 8DJH 24 blue GIS switchgear and includes 24 AC Alfen charging points on site.

This project represents more than added capacity. By eliminating SF₆, one of the most potent greenhouse gases, it sets a new benchmark for sustainable high-voltage infrastructure. The substation powers 8 solar inverters of 125 kW each, ensuring reliable integration of renewable energy while providing capacity for future expansion.

Reeload’s EPC scope included the delivery of a 1250 kVA prefabricated HV station, civil and electrical works, integration of Siemens SF₆-free technology, and the installation of 24 charging points. Under the project leadership of Frederik Roeges, the Reeload team managed all aspects of design, delivery, and commissioning, ensuring seamless execution.

This milestone shows that the energy transition requires more than charging hubs. It depends on sustainable high-voltage systems that enable large-scale renewable integration. In close collaboration with ENGIE Belgium, Reeload has demonstrated that electrification without compromise is not only possible, but already being delivered today.