Most non-renewable energy reserves are locked in the form of hard coal. In 2023, hard coal accounted for 46.55 percent of the world's proved non-renewable energy reserves. Meanwhile, conventional oil made up around 17.8 percent of such reserves.
Distribution of non-renewable energy reserves worldwide in 2023, by fuel source
Figures were calculated by Statista based on absolute figures provided by the source. Figures were rounded.
According to the source, the energy sources are classified as follows:
Non-conventional oil: oil sands / heavy oil and oil shale
Non-conventional natural gas: shale gas/tight gas, coal bed methane (CBM), gas hydrates and aquifers
The source distinguishes between "reserves" and "resources" as follows: Reserves: Quantities of energy sources which were accurately recorded and can be commercially extracted using current technologies Resources: Quantities of energy sources which are either proved but currently not commercially recoverable or expected (on the basis of geological indicators) and can be verified by exploration.
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BGR. (December 2, 2024). Distribution of non-renewable energy reserves worldwide in 2023, by fuel source [Graph]. In Statista. Retrieved June 06, 2025, from https://www.statista.com/statistics/263230/proportion-of-non-renewable-energy-reserves/
BGR. "Distribution of non-renewable energy reserves worldwide in 2023, by fuel source." Chart. December 2, 2024. Statista. Accessed June 06, 2025. https://www.statista.com/statistics/263230/proportion-of-non-renewable-energy-reserves/
BGR. (2024). Distribution of non-renewable energy reserves worldwide in 2023, by fuel source. Statista. Statista Inc.. Accessed: June 06, 2025. https://www.statista.com/statistics/263230/proportion-of-non-renewable-energy-reserves/
BGR. "Distribution of Non-renewable Energy Reserves Worldwide in 2023, by Fuel Source." Statista, Statista Inc., 2 Dec 2024, https://www.statista.com/statistics/263230/proportion-of-non-renewable-energy-reserves/
BGR, Distribution of non-renewable energy reserves worldwide in 2023, by fuel source Statista, https://www.statista.com/statistics/263230/proportion-of-non-renewable-energy-reserves/ (last visited June 06, 2025)
Distribution of non-renewable energy reserves worldwide in 2023, by fuel source [Graph], BGR, December 2, 2024. [Online]. Available: https://www.statista.com/statistics/263230/proportion-of-non-renewable-energy-reserves/
