Quad

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The quad is a unit of energy defined as 1 quadrillion (10¹⁵) BTU.^[1] Quads are used in similar settings as the exajoule (10¹⁸ joules) when speaking of world or national energy supply/demand.

References

↑ APS Physics. (2015). Energy Units [Online]. Available: http://www.aps.org/policy/reports/popa-reports/energy/units.cfm [February 20, 2015].

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