Storing power in super conducting coils still a possibility says U of Houston researcher

By Paul Dvorak There is more than one way to store a watt. For instance, about seven years ago, the DOE-funded development of a project titled “Superconducting Magnet Energy Storage System with Direct Power Electronics Interface.” The $5.25 million effort was to develop an affordable system capable of large-scale energy storage that would be a game-changing advance for the U.S. electrical grid.
In a cryogenic environment, near absolute zero, even copper is superconducting. A coil of it charges just like a battery or capacitor. “What’s more, energy can be stored in a superconducting coil for a long period. And when the power is needed,

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