Global non-renewable energy resources breakdown 2023, by source

Figures were calculated by Statista based on absolute figures provided by the source. Figures may not add up to 100 percent due to rounding.

According to the source, the following energy sources belong to the respective commodity groups:

1. Non-conventional oil: oil sands / heavy oil and oil shale
2. 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 "