Coal

A coal — a solid fossil fuel formed from ancient plant matter — is burned for electricity generation (~65% of coal use) and steel production (~25% via coking coal). Coal is the dirtiest fossil fuel on a carbon-per-BTU basis, and its use is declining in developed economies as renewables and natural gas supplant it, but consumption continues to grow in emerging markets, particularly China and India.

The energy source for development

Coal has historically been the dominant fuel for economic development. It powered the Industrial Revolution, was the foundation of electrification, and remains crucial for emerging economies seeking cheap, abundant energy.

China’s development was fueled by coal; India’s is currently; Southeast Asia’s is beginning. As long as coal is cheaper than alternatives, it will be burned in developing economies, despite its environmental and health costs.

Developed economies have transitioned away from coal (US, Europe, Japan) toward natural gas and renewables. However, total global coal consumption peaked only recently (2013) and remains near those levels, sustained by emerging-market growth.

Thermal vs. coking coal

Two distinct coal markets exist:

• Thermal coal: Burned directly for electricity in power plants. Lower quality is acceptable; prices are $60–200 per tonne.
• Coking coal: Used in steel mills to reduce iron ore at high temperatures. High quality is essential; prices are $150–400+ per tonne.

Coking coal is much more specialized and profitable; a small deposit of high-quality coking coal can sustain a mine. Thermal coal is bulkier and lower-margin.

China’s dominance and consumption

China produces half of global coal and consumes 55% of it. China’s dominance in coal production and consumption means global coal prices are set by Chinese supply-demand, similarly to how copper prices are dominated by Chinese demand.

China’s coal industry is inefficient, state-directed, and prone to overcapacity. Periodic government production cuts are implemented to support prices or reduce pollution.

Declining use in developed countries

The US, Europe, and Japan have all dramatically reduced coal consumption:

• US: Coal generation fell from 50% of electricity (2005) to ~20% (2023) due to cheap natural gas and renewable incentives.
• Europe: Coal generation collapsed from 30% (2012) to ~15% (2023) due to carbon regulations and renewable mandates.
• Japan: Coal generation fell from 30% (2010) to ~35% (2023, slightly higher post-Fukushima nuclear shutdowns).

This decline reflects the economics of renewables (now cheaper than coal in most regions), environmental regulation (carbon taxes, cap-and-trade), and public pressure.

However, total developed-country coal consumption remains substantial; coal still supplies 10–20% of developed-economy electricity because it has low short-term operating costs (though high long-term health and environmental costs).

Environmental costs and externalities

Burning coal generates:

• CO₂ emissions: ~2 tonnes per tonne of coal (the dirtiest fossil fuel).
• Air pollution: Sulfur oxides, nitrogen oxides, particulates causing respiratory disease.
• Mercury and heavy metals: Bioaccumulation in food chains, neurological damage.
• Mining damage: Deforestation, water pollution, habitat destruction.

These externalities are not priced in coal markets (though carbon taxes are beginning to partially price CO₂). The true cost of coal is 2–3x its market price when externalities are included.

Supply from Australia

Australia is a major thermal and coking coal exporter, with reserves lasting ~200+ years at current rates. Australian coal is high-quality and efficiently mined, making it the preferred import source for Asian customers.

Shipping costs from Australia to Asia are ~$15–30 per tonne, a material fraction of the final price. Coal prices therefore reflect both mine-gate costs and shipping costs.

Long-term demand outlook

Coal demand will likely continue to decline in developed economies but remain flat to rising in emerging markets. Most energy forecasts show coal’s share of global electricity falling from ~35% today to 15–25% by 2050.

This long-term decline creates stranded assets: coal mines will close, coal plants will retire, and coal regions will face economic disruption.

Price volatility and supply shocks

Coal prices are volatile, moving 30–50% annually due to:

• Economic cycles: Recession reduces electricity demand sharply.
• Weather: Cold winters drive electricity demand higher; warm winters reduce it.
• Supply shocks: Mine disasters, strikes, or policy changes disrupt supply.
• Shipping: Changes in freight rates affect delivered prices.

However, coal prices are less volatile than oil or natural gas, because coal demand is slower-moving and less weather-sensitive.

How coal trades

Coal is not traded on major futures exchanges like oil or natural gas. Instead, coal is traded OTC via negotiations between miners, traders, and utilities.

Spot prices are set by reference-price providers (e.g., S&P Global Platts) based on observed transactions. Long-term contracts between miners and utilities are more common than spot trading.

Retail access is via commodity-index funds or mining stocks; direct coal investment is uncommon.

See also