Mozambique has denied emerging industrial giant India five more coal concessions, saying the Asian nation should first develop sites where deals have already been struck.
Fresh flooding in top global exporter Australia has added a further $10 to coal prices, driving thermal coal to a year high.
Xstrata is close to winning the $8bn auction for Colombia's second-biggest coal miner, reports British newspaper The Sunday Times.
Eskom CEO Brian Dames has repeated the power utility's call for urgent coal export restrictions, suggesting a formula-based export quota for miners.
South Africa has joined coal exporters facing shipment delays after three derailments on the line from mines to Richards Bay Coal Terminal brought stocks to very low levels, says industry sources.
Eskom CEO Brian Dames says the lack of new power stations may finally catch up with South Africa in 2011.
Riversdale Mining and joint venture partner Tata Steel have agreed to fully own the $1bn Benga power plant project in Mozambique, says the mining group.
Coal buyers are scrambling to find replacement supplies as mines in top producer Australia face weeks under flood water.
A fire has caused Australia's Blakefield South coal mine in New South Wales state to close down, says owner Xstrata.
Eskom says contingency plans are in place to ensure it generates enough electricity in spite of heavy rains disrupting coal supply to stations.