Reserves of energyAbility to do work or diffuse heat. The unit of energy is th... carriers are clearly identifiable stock which can be technically and economically mined under today’s conditions or those to be expected in future. Resources are stock exceeding the reserves. They have been verified or are probable, but cannot be obtained at present for technical and/or economical reasons. The resources also include deposits that are not yet verified, but geologically possible. Thus, it is assumed that oil is bound in oil sands and oil shales, the mining of which is however uneconomical in view of the present price structure. The guaranteed and economically minable guaranteed energyAbility to do work or diffuse heat. The unit of energy is th... reserves as of 2020 of natural gas, oil, uraniumNatural radioactive element with the atomic number 92. The n... and coal world-wide amount to the following quantities:
- Natural gas > 198.8 trillion cubic metres
- Oil > 244.6 billion tonnes
- Natural uraniumUranium in the isotope composition occurring in nature, Natu... > 8.1 million tonnes
- Coal (all forms) > 1,069 billion tonnes