Medupi impact will only be felt by June
While 80MW have been added to the grid, this won't resolve the immediate power crisis.
On Monday, Medupi's unit six synchronised with the national power grid as it prepares for June, when the parastatal aims to bring the entire unit online.
By 2020, all units of the Medupi power station will deliver more than 4,000 megawatts.
Brown says while Monday marked a major milestone, it will still take time before the country is out of the woods.
"The synchronisation of unit six is a step towards full power. What happens now is Medupi will receive a security license which will say that the plant is secure and we can now start ramming up the plant."