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.

My name is Kennedy Maize, the proprietor of The Quad Report. I have been a Washington-based journalist covering energy and environmental topics for more than 40 years. My hope for this blog is to provide insight and analysis to how energy and environmental policy and politics work in the U.S. and elsewhere.