(Bloomberg) -- Eskom Holdings SOC Ltd. said it is immediately starting rolling blackouts for the next two hours.

“Acts of intimidation and sabotage have resulted in Eskom being unable to ensure uninterrupted power supply,” Khulu Phasiwe, Eskom’s spokesman, said via his Twitter account on Thursday.

Wage talks with unions broke down last week after Eskom, which is working to improve its financial situation under a new board and chief executive officer, insisted it can’t afford pay increases. Unions began protests this week. Eskom last implemented rolling blackouts in 2015.

To contact the reporter on this story: Renee Bonorchis in Johannesburg at rbonorchis@bloomberg.net

To contact the editors responsible for this story: Stefania Bianchi at sbianchi10@bloomberg.net, Hilton Shone

©2018 Bloomberg L.P.