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Unit of energy From Wikipedia, the free encyclopedia
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.
quad | |
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![]() A Sankey diagram using quads. | |
General information | |
Unit of | energy |
Symbol | quad |
Conversions | |
1 quad in ... | ... is equal to ... |
US customary units | 1015 BTU |
SI | 1.055×1018 joule |
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]
Some common types of an energy carrier approximately equal to 1 quad are:
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