Units of energy

The barrel of oil equivalent (bboe, sometimes BOE) is a unit of energy approximately equal to 5.8 × 106 BTU59 °F or 6.12 × 109 J, based on the approximate energy released by burning one barrel of crude oil. ...more on Wikipedia about "Barrel of oil equivalent"

The British thermal unit (BTU or Btu) is a unit of energy used in the United States. It is also still occasionally encountered in the UK, in the context of older heating and cooling systems. In most other areas, it has been replaced by the SI unit of energy, the joule (J). ...more on Wikipedia about "British thermal unit"

A calorie is a unit of measurement for energy. In most fields, it has been replaced by the joule, the SI unit of energy. However, it remains in common use for the amount of energy obtained from food. Many different definitions for the calorie have emerged during the 19th and 20th century. They fall into two classes: ...more on Wikipedia about "Calorie"

An electronvolt (symbol: eV) is the amount of kinetic energy gained by a single unbound electron when it passes through an electrostatic potential difference of one volt, in vacuum. The one-word spelling is the modern recommendation; the use of the earlier electron volt still exists. This is a very small amount of energy: ...more on Wikipedia about "Electronvolt"

An erg is the unit of energy and mechanical work in the centimetre-gram-second (CGS) system of units, symbol "erg". Its name is derived from the Greek word meaning "work". ...more on Wikipedia about "Erg"

A foe is a unit of energy equal to 1044 joules. ...more on Wikipedia about "Foe (unit of energy)"

In physics, a foot-pound force (symbol ft·lbf or ft·lbf), usually abbreviated to foot-pound, is an Imperial and U.S. customary unit of mechanical work, or energy, although in scientific fields one commonly uses the equivalent metric unit of the joule (J). There are approximately 1.356 J/ft·lbf, or exactly 1.355 817 948 331 400 4 J/ft·lbf. It is also called a dynam. ...more on Wikipedia about "Foot-pound force"

GGE (or Gasoline gallon equivalent) is the amount of alternative fuel it takes to equal the energy content of one liquid gallon of gasoline. We can use compressed natural gas ( CNG) as an example here. Since CNG is a gas rather than a liquid, its volume is measured in cubic feet (CF), rather than in gallons. Therefore, GGE is a way of comparing equivalent volumes of fuel based on their energy content in British Thermal Units ( BTU). ...more on Wikipedia about "GGE"

A gigaton (or gigatonne) is a Metric Unit of mass, equal to 1,000,000,000 (1 billion) Metric tons, 1,000,000,000,000 (1 trillion) kilograms, or 1 quadrillion grams. More commonly, though, the term gigaton is used to mean a gigaton of TNT. ...more on Wikipedia about "Gigaton"

GTOE is an abbreviation for "gigatonne of oil equivalent", a common measure of global energy. It is a billion ton of oil equivalent (TOE), hence 10,000,000,000,000,000,000 calories (as in the energy to heat one gram of water one degree Celsius, not "Calories" as in the food measurement —also known as the kilocalorie) or 41.868 EJ (exajoules) or 11.63 PW·h (petawatt-hours). As of 2003, the world uses roughly 9 GTOE (380 EJ) worth of energy per year, from all energy sources combined with an annual growth rate of roughly 3%. ...more on Wikipedia about "GTOE"

A Hartree (symbol Eh) is the atomic unit of energy and is named after physicist Douglas Hartree. ...more on Wikipedia about "Hartree energy"

The joule (symbol: J) is the SI unit of energy, or work. It is named in honour of the physicist James Prescott Joule (1818–1889). ...more on Wikipedia about "Joule"

A megaton or megatonne is a unit of mass equal to 1,000,000 metric tons, i.e. 109 kg or 1 teragram (Tg). The official SI symbol for the megaton is Mt, but MT is also being used; beware that the latter is also (unofficially) used for the metric ton in some contexts. See 1 E9 kg for a comparison with similar masses. ...more on Wikipedia about "Megaton"

The Planck energy is the natural unit of energy, denoted by EP. ...more on Wikipedia about "Planck energy"

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The therm (symbol thm) is a non- SI unit of heat energy. It is approximately the energy equivalent of burning 100 cubic feet of natural gas at standard temperature and pressure. ...more on Wikipedia about "Therm"

The ton of oil equivalent (TOE) is a unit for measuring energy. It corresponds to 10 Gcalth or 41.868 GJ, or 11.63 MWh. It is the rounded-off amount of energy that would be produced by burning one metric ton of crude oil. Since crude oil of different provenance will have a different chemical make-up and therefore give off varying amounts of heat when burnt, the value is conventional to a certain extent. ...more on Wikipedia about "Ton of oil equivalent"

(Watt-hour) The watt hour (symbol W·h) is a unit of energy. The watt hour is not an SI unit because it contains the non-SI unit hour. The SI unit of energy is the joule (J). ...more on Wikipedia about "Watt-hour"

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