Quad (energy)

Quad (energy)

A quad is a unit of energy equal to 1015 (a short-scale quadrillion) BTU, [cite web
url = http://matse1.mse.uiuc.edu/energy/glos.html
title = Energy: Glossary
publisher = Department of Materials Science and Engineering, University of Illinois Urbana-Champaign
quote = QUAD: an amount of energy equal to 1015 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. [cite web
url = http://www.eia.doe.gov/pub/international/iealf/table18.xls
title = World Consumption of Primary Energy by Energy Type and Selected Country
accessdate = 2007-05-12
author = Energy Information Administration
authorlink = Energy Information Administration
date = 2006-07-31
format = Excel spreadsheet
work = International Energy Annual 2004
]

=References=


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