Technology Review
March 8, 2011
Superconducting magnetic energy storage (SMES) has long been pursued as a large-scale technology because it offers instantaneous energy discharge and a theoretically infinite number of recharge cycles. Until recently, however, the material costs for SMES devices have been prohibitively high for all but very small applications. Now a project funded by the U.S. Department of Energy (DOE) could pave the way for SMES technology that offers megawatt hours of energy storage. Such capacity is becoming increasingly necessary for electricity grids that need to balance the intermittency of renewable energy sources.
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