Key Takeaways
- • Indonesia's Ministry of Energy and Mineral Resources set benchmark coal prices for the second half of May on May 15, 2026, with the 5,300 kcal grade declining to $76.62/ton from $80.80/ton in the first half of May, representing a 5.2% decrease.
- • The highest-calorific 6,322 kcal/kg grade benchmark fell to $110.38/ton from $121.15/ton, a 8.9% sequential decline reflecting weaker global thermal coal demand despite earlier May strength.
- • Lower-grade coal (4,100 kcal and 3,400 kcal) showed marginal price movement, with 4,100 kcal essentially flat at $50.58/ton versus $50.43/ton, while 3,400 kcal rose slightly to $35.42/ton from $34.73/ton.
- • Indonesia's twice-monthly benchmark pricing mechanism (HBA) directly influences floor prices for all domestic and export thermal coal transactions, making these adjustments critical for supply chain participants across Asia-Pacific markets.
- • The second-half May decline reverses gains achieved in early May when the 6,322 kcal benchmark rose 3.5% from April levels, signaling volatility in seasonal summer demand patterns and renewed supply availability.
Summary
Indonesia's Ministry of Energy and Mineral Resources announced second-half May benchmark coal prices on May 15, 2026, establishing reference rates across four calorific value grades that serve as the foundation for all domestic and export thermal coal transaction floors. The most widely traded 5,300 kcal grade benchmark was priced at $76.62 per metric ton, down 5.2% from the first half of May's $80.80/ton, marking a pullback after earlier-month price strength.
The premium-grade 6,322 kcal/kg coal benchmark experienced a more pronounced 8.9% sequential decline, falling to $110.38/ton from $121.15/ton. This contraction mirrors broader softening in global thermal coal markets following initial May gains, when the same grade had risen 3.5% from April's $99.87/ton. The steeper correction in higher-calorific grades suggests reduced demand from power generation and industrial consumers, or increased supply availability as seasonal patterns shift into the northern hemisphere summer.
Lower-grade thermal coal showed relative stability, with 4,100 kcal coal holding essentially flat at $50.58/ton against the prior period's $50.43/ton. The lowest-grade 3,400 kcal benchmark ticked upward modestly to $35.42/ton from $34.73/ton, suggesting differentiated pricing pressure across the quality spectrum. Indonesia's bimonthly benchmark-setting mechanism remains the primary pricing tool for calculating floor prices on coal transactions throughout the region, making these adjustments material for producers, traders, and utilities across Asia-Pacific markets. The second-half May price reset reflects the volatility inherent in thermal coal markets as supply dynamics and seasonal demand patterns continue to evolve through mid-year.
The premium-grade 6,322 kcal/kg coal benchmark experienced a more pronounced 8.9% sequential decline, falling to $110.38/ton from $121.15/ton. This contraction mirrors broader softening in global thermal coal markets following initial May gains, when the same grade had risen 3.5% from April's $99.87/ton. The steeper correction in higher-calorific grades suggests reduced demand from power generation and industrial consumers, or increased supply availability as seasonal patterns shift into the northern hemisphere summer.
Lower-grade thermal coal showed relative stability, with 4,100 kcal coal holding essentially flat at $50.58/ton against the prior period's $50.43/ton. The lowest-grade 3,400 kcal benchmark ticked upward modestly to $35.42/ton from $34.73/ton, suggesting differentiated pricing pressure across the quality spectrum. Indonesia's bimonthly benchmark-setting mechanism remains the primary pricing tool for calculating floor prices on coal transactions throughout the region, making these adjustments material for producers, traders, and utilities across Asia-Pacific markets. The second-half May price reset reflects the volatility inherent in thermal coal markets as supply dynamics and seasonal demand patterns continue to evolve through mid-year.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.