Energy It is equal to the energy expended (or work done) in applying a force of one newton through a distance of one metre. However energy is also expressed in many other units not part of the SI, such as ergs, calories, British Thermal Units, kilowatt-hours and kilocalories, which require a conversion factor when expressed in SI units. The SI unit of energy rate (energy per unit time) is the watt, which is a joule per second. Thus, one joule is one watt-second, and 3600 joules equal one watt-hour. The CGS energy unit is the erg and the imperial and US
National Energy Research Scientific Computing Center hours) with University of Arizona, Massachusetts Institute of Technology, University of California Berkeley, Princeton, University of California Los Angeles, University of Kentucky, University of California Irvine, George Washington University and the University of Chicago rounding out the top 10. Geographically, 5,853 of NERSC's users are in North America, 30 in South America, seven in Africa, 335 in the Middle East/Asia Pacific region and 662 in Europe. National Energy Research Scientific Computing Center The National Energy Research Scientific Computing Center, or NERSC, is a high performance computing (supercomputer) user facility operated by Lawrence Berkeley National Laboratory for the United States Department