EnergySupply concerns come amid already high demand as alternative to LNGStarting this month, Indonesia's thermal coal exporters must now report to a new state-owned company. © ReutersMISA HAMAJune 18, 2026 00:55 JSTTOKYO -- Thermal coal prices are rising again as Indonesia tightens export controls and a deadly mining accident in China halts operations, further straining supply amid already strong demand driven by an LNG shortage caused by the Iran war.