The following submission statement was provided by /u/darth_nadoma:

It is the first large scale Electricity storage facility in the Republic of South Africa and on the continent as a whole. Indeed we are seeing a growing wave of such developments in various corners of the world map.

Construction will take between seven and twelve months and the batteries
on the site will be charged from the main grid via Eskom’s Elandskop
substation. The facility will have a capacity of 8 MW, equivalent to 32
MWh of distributed electricity, enough to power a town such as Howick
for four hours. Among the notable benefits of the BESS is that it will
boost the network during peak hours, thereby reducing the strain on the
network during peak hours.

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/ziqhbx/south_africas_eskom_starts_construction_of_its/izs2c4o/