Unit representing energy generated by burning one metric ton (1000 kilograms or 2204.68 pounds) or 7.4 barrels of oil, equivalent to the energy obtained from 1270 cubic meters of natural gas or 1.4 metric tons of coal that is, 41.87 gigajoules (GJ), 39.68 million Btu (MMBtu), or 11.63 megawatt hours (MWh).