Eskom and US-based gravity energy storage company Energy Vault have signed a strategic development agreement to explore the deployment of grid-scale gravity energy storage systems in South Africa.
According to the parties, the agreement includes plans to develop a 25 MW/100 MWh gravity energy storage demonstration project at Eskoms Hendrina power station in Mpumalanga. The project is part of Eskoms broader strategy to repurpose coal power station infrastructure as part of the energy transition.
The companies say the gravity storage system will use Energy Vaults EVx technology, which stores energy by lifting and lowering composite blocks using cranes and regenerative braking systems.
