Quad_(unit)

Quad (unit)

Quad (unit)

Unit of energy

A quad is a unit of energy equal to 1015 (a short-scale quadrillion) BTU,[1] or 1.055×1018 joule (1.055 exajoules or EJ) in SI units.

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The unit is used by the U.S. Department of Energy in discussing world and national energy budgets. The global primary energy production in 2022 was 637.8 quad, i.e., 672.9 EJ. [2]

Conversion

Some common types of an energy carrier approximately equal to 1 quad are:

  • 8,007,000,000 gallons (US) of gasoline
  • 293,071,000,000 kWh
  • 293.07 terawatt-hours (TWh)
  • 33.434 gigawatt-years (GWy)
  • 36,000,000 tonnes of coal
  • 970,434,000,000 cubic feet of natural gas
  • 5,996,000,000 UK gallons of diesel oil
  • 25,200,000 tonnes of oil
  • 252,000,000 tonnes of TNT or five times the energy of the Tsar Bomba nuclear test
  • 12.69 tonnes of uranium-235 (with 83.14 TJ/kg)
  • 6 seconds of sunlight reaching Earth

See also

References

  1. [1]
    "Energy: Glossary". Department of Materials Science and Engineering, University of Illinois Urbana-Champaign.
  2. [2]
    Energy Information Administration (2023-10-31). "World total primary energy consumption by region, Reference case" (PDF). International Energy Outlook 2023.
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