Cape Town - South Africa's Eskom is seeking R2 billion ($147 million) from Glencore.
Acting CEO Brian Molefe also said the utility wants the commodity producer's local unit to resume coal supplies to its power stations immediately.
Molefe was speaking on Friday.
Eskom wants Optimum Coal to start supplying the fossil fuel at the contracted price and will seek damages from Glencore.
Glencore has said it will close some operations at its subsidiary in South Africa due to weak coal prices.
REUTERS