TenneT TSO GmbH (hereinafter referred as TenneT) is the largest Transmission System Operator (TSO) in Germany (based on circuit length, installed capacity and size of operating zone as of 31 Decem-ber 2025). The company …
operates critical infrastructure that secures access to a reliable, sustainable and affordable electricity supply. TenneT is one of the largest investors in electricity grids on land and at sea in Germany. Located at the Northwest European energy crossroads, TenneT connects: North and South. Offshor
e and Onshore. Germany and Europe. With its approximately 5,000 employees the company builds, maintains and operates Germany's largest transmission grid with a length over 14,000 km connect-ing more than a third of the European Union’s tota