Vattenfall has signed a contract for 100 megawatts (400 megawatt-hours) of storage capacity from the Leopard battery project under development by Giga Storage in the Netherlands, the companies said.
Erik Suichies, Vattenfall’s head of wholesale customers, said the agreement will allow the utility to manage increased imbalance risks in its customer and renewable portfolio. The company said the battery will support short-term wholesale market operations by absorbing excess supply or providing power during shortages.
“As renewables take an increasingly prominent role in our energy system, the need for flexible capacity continues to grow,” Suichies said. He added that “batteries can respond rapidly to constant fluctuations—stepping in during shortages or storing energy when supply exceeds demand,” describing them as “a critical component of the energy system of the future.”
Giga Storage has reached a final investment decision on the Leopard facility, which will be located in Delfzijl and is designed for a maximum output of 300 MW. Under the contract, Vattenfall will be able to store up to 400 MWh and charge or discharge at a rate of up to 100 MW.
The agreement is set to begin on Jan. 1, 2028. It marks Vattenfall’s third flexibility contract in recent months, following deals for 50 MW in the Netherlands and 55 MW in Germany earlier this year.
