Acting Eskom chairman Mpho Makwana declined to comment on Wednesday on a news report that CEO Jacob Maroga was no longer in that position.

"I am unable to discuss that right now," Makwana told Sapa.

Bloomberg news agency reported on Wednesday morning that Maroga was no longer the electricity utility's CEO.

Quoting Eskom spokesman Andrew Etzinger, who was unavailable for comment after the report was published online, it said Eskom was proceeding on the basis that Maroga was no longer the chief executive officer.

"We will be issuing a statement later this afternoon [Wednesday], or at the latest, tomorrow [Thursday] at noon," Makwana said.

The Eskom board, whose chairman Bobby Godsell has resigned, was first expected to release a statement on Tuesday, amid reports that Maroga was prevented from entering his office.

The board apparently maintains Maroga's resignation on October 28 remains valid, despite Maroga sending Public Enterprises Minister Barbara Hogan a letter on Monday to say he was still CEO of the electricity utility.

His apparent refusal to vacate his office prompted Godsell's resignation.