"The name is corruption‚ but the game is procurement‚" Mabuza told Deputy Chief Justice Raymond Zondo heading the inquiry on Friday.
Mabuza went on to outline disciplinary action taken against now former Eskom executives Shaun Maritz and Matshela Koko after his board took over in January 2018.
"What we see and what we call 'corruption' is what happens in the procurement of goods and services in the public sector. The real incidents happen in the procurement‚ and we have come to see it in a number of manifestations at Eskom‚" Mabuza said.
"We decided we were going to place charges in front of Koko and a disciplinary process that is not a sham. We picked the four charges that we thought would stick and we presented it to him‚ and we viewed them seriously enough‚" Mabuza said.
The testimony continues.