Power utility Eskom and and NYSE-listed grid-scale energy storage solutions provider Energy Vault have signed a strategic development agreement to deploy long-duration gravity energy storage systems (GESSs) in South Africa and, eventually, also the rest of the Southern African Development Community (SADC). The first GESS plant will be built at Eskom’s Hendrina power station, in Mpumalanga. The system is expected to provide 25 MW of capacity with four hours of storage, equivalent to 100 MWh, and is designed to be fully scalable up to 4 GW.
