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As of 2023, coal dominated Indonesia's reserves at 38.6 billion short tons recoverable. It also held 2.480 billion barrels of oil and 49.74 trillion cubic feet of gas. Over the last decade, coal reserves grew significantly (+56%). EIA stopped publishing oil and gas proved reserves in 2023; the figures above use the latest archived release, while coal continues to update through 2023. Beyond fossil fuels, Indonesia is the world's largest producer of Nickel, a top-five producer of Cobalt, and a top-ten producer of Bauxite, part of a critical-minerals base spanning 5 commodities tracked by USGS. It also holds top-five reserves of Gold.
Oil reserves (2021)
2.48 B bbl
Natural gas reserves (2021)
49.74 TCF
Coal reserves (2023)
38.6 B ST
Nickel reserves (2025)
#162.0 Mt
Cobalt reserves (2025)
#4760.0 kt
Gold reserves (2025)
#43.6 kt
Indonesia's reserve base was dominated by coal, the most carbon-intensive fossil fuel by energy content. Reserve estimates had been revised upward over the past decade, reflecting new discoveries or improved recovery technology.
Indonesia produces Cobalt, Nickel, Copper, Gold, plus 1 more among USGS-tracked critical minerals.
USGS marks 2025 production figures and all reserve estimates as estimated; some earlier production years are USGS estimates as well. Each commodity below charts its own mine-production history, with the 2025 reserve shown beneath its chart.