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The tonne of oil equivalent (toe) is a unit of energy defined as the amount of energy released by burning one tonne of crude oil. It is approximately 42 gigajoules, although as different crude oils have different calorific values, the exact value is defined by convention; several slightly different definitions exist. The ''toe'' is sometimes used for large amounts of energy. Multiples of the ''toe'' are used, in particular the megatoe (Mtoe, one million toe) and the gigatoe (Gtoe, one billion toe). A smaller unit of kilogram of oil equivalent (kgoe) is also sometimes used denoting 1/1000 toe. ==Definitions== The International Energy Agency defines one '' tonne of oil equivalent'' (toe) to be equal to:〔(【引用サイトリンク】title=IEA – Unit Converter )〕 *1 toe = 11.63 megawatt-hours (MWh) *1 toe = 41.868 gigajoules (GJ) *1 toe = 10 gigacalorie (Gcal) – *1 toe = 39,683,207.2 british thermal unit (BTU) *1 toe = 1.42857143 tonne of coal equivalent (tce) Conversion into other units: *1 toe = 7.11, 7.33, or 7.4 barrel of oil equivalent (boe) Some other sources and publications use divergent definitions of toe, for example: *1 toe = 10.7 gigacalorie (Gcal) – *1 toe = 41.85 gigajoules (GJ)〔(Definition at 41.85 GJ )〕 *1 toe = 44.769 gigajoules (GJ) – *1 toe = 39,683,205.411 british thermal unit (BTU) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tonne of oil equivalent」の詳細全文を読む スポンサード リンク
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