And no, it’s not just wires and steel beams—it’s the linchpin for fueling the exploding data center market around Frankfurt and the springboard for hydrogen production and hydrogen storage trials. TenneT will raise a 380 kV switching station that plugs into its north-south power artery. That 380 kV switchyard is the workhorse of extra-high-voltage transmission—a hub that flips and funnels power flows at 380 kilovolts. Both firms are hedging bets: Uniper on hydrogen production and storage markets, TenneT on transmission rights and green credentials. By teaming up, Uniper and TenneT sidestep years of bureaucracy—Uniper swaps land, TenneT brings grid expertise.