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2023
|
Invention
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Gravitational potential energy storage systems and methods.
A gravitational energy storage syste... |
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2021
|
Invention
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Gravitational potential energy storage systems and methods. A gravitational energy storage system... |
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2017
|
Invention
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Ridgeline cable drive electric energy storage system. A highly efficient, utility scale energy st... |
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2013
|
Invention
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Utility scale electric energy storage system. A potential energy storage system incorporating mul... |
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2012
|
Invention
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Rail based potential energy storage for utility grid ancillary services. A utility grid ancillary... |
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|
Invention
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Combined synchronous and asynchronous power supply for electrically powered shuttle trains. A pow... |
