Convert million tonnes liquefied natural gas to electronvolt

Energy statistics reduce every fuel to a common yardstick. The tonne of oil equivalent is defined by the IEA as 41.868 GJ (11.63 MWh), roughly the energy in a tonne of crude; national energy balances are in Mtoe. The barrel of oil equivalent is used by oil companies, and its exact value varies between them, so figures are approximate. The tonne of coal equivalent is 29.3 GJ (7 million kcal), which Germany writes as SKE (Steinkohleeinheit). Natural gas is counted by volume or, as LNG, by mass: a billion cubic metres of gas is about 0.9 Mtoe.

The electronvolt is the energy an electron gains crossing one volt, 1.602 × 10⁻¹⁹ J, and is the natural unit of the very small. Chemical bonds and visible light are a few eV, X-rays tens of keV, nuclear gamma rays MeV, and the Large Hadron Collider brings protons to 6.8 TeV each. Through E = mc² it also serves as a mass unit: an electron is 0.511 MeV, a proton 938 MeV, and the Higgs boson 125 GeV.