Key Highlights

  • Rising LNG prices tied to Hormuz risk are pushing Japan and Korea back toward coal.
  • The shift partially reverses years of decarbonization-driven demand decline for coal.
  • Higher-grade Australian coal is the primary beneficiary of this renewed Asian demand.

For much of the past decade, Japan and South Korea have been steadily reducing their reliance on coal-fired power generation, part of broader decarbonization strategies aimed at cutting emissions and shifting toward cleaner energy sources including LNG, nuclear, and renewables. That trend is now facing a partial reversal, driven not by policy change but by the economics of a Middle East conflict thousands of miles from either country's shores.

The mechanism is straightforward. LNG tankers have grown increasingly reluctant to transit the Strait of Hormuz after Iran struck a vessel passing through the waterway, tightening the availability of seaborne gas cargoes and pushing up prices for buyers who depend on them. Japan and Korea, both heavily reliant on imported LNG given their limited domestic energy resources, have found themselves paying a growing premium for gas at precisely the moment coal has become comparatively more attractive.

That relative price shift has translated into renewed utility demand for higher-grade coal, the type of thermal coal predominantly sourced from Australia and favored for its higher energy content and lower emissions profile relative to lower-grade alternatives. As LNG costs climb, utilities across both countries appear to be leaning more heavily on existing coal-fired capacity to meet electricity demand, rather than accelerating planned retirements of coal plants.

The shift illustrates a broader dynamic playing out across global energy markets: geopolitical risk in one region can quickly reshape fuel-switching decisions in entirely unrelated parts of the world, as utilities respond to relative price signals rather than long-term policy targets. For Australian coal exporters, the renewed demand from Japan and Korea has provided a welcome source of support at a time when other major buyers, notably India, have been pulling back on imports.

Whether this reversal proves temporary or more lasting will likely hinge on how long elevated LNG prices persist. If Hormuz shipping conditions normalize and gas prices ease, Japan and Korea would likely resume their gradual shift away from coal. But a prolonged period of LNG scarcity could see coal-fired generation play a larger role in both countries' energy mix for longer than either government had originally planned.