LARGE SCALE GRID ENERGY STORAGE BASED ON ALUMINUM TECHNOLOGY
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United States of America Patent
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Issued Date -
Nov 7, 2013
app pub date -
May 2, 2012
filing date -
May 2, 2012
priority date (Note) -
Abandoned
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Abstract
Grid energy storage is very challenging due to its large scale, required quick response, versatility, round trip efficiency, and new system infrastructure. However, the benefit is also huge because it would enable utilisation of intermittent renewable energy, leverage load, and allow energy management in hours/diurnal to seconds/minutes. A new invention is described to store up to 4-6% the entire grid energy by aluminum production, while returning its baseload back to the grid by idling aluminum smelter cells. The round trip efficiency will be close to 100%; switching between storage and load release can be instantaneous.
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