A metric unit of energy commonly used in the energy industry, equal to 1012 joules. One terajoule equals 947.817 million Btu, 277.7778 megawatt hours (MW.h), or about 9480 therms (see below)
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}