Quad (unit)

Updated on Oct 07, 2024

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

The unit is used by the U.S. Department of Energy in discussing world and national energy budgets. The global primary energy production in 2004 was 446 quad, equivalent to 471 EJ.

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 kilowatt-hours (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

13.3 tonnes of uranium-235

References

Quad (unit) Wikipedia

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