Storing Power in Molten Aluminum Lakes
Germany’s sprint toward renewable energy makes wholesale power cheap, even free, when the sun is shining and the wind is blowing. When the weather’s gray, prices spike. The system doesn’t yet have dedicated storage equipment capable of holding large amounts of renewable energy. Trimet Aluminium, Germany’s largest producer of the metal, is experimenting with one answer: using its vast pools of molten metal as storage batteries .
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