Basic Technology Characteristics
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How it Works:
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Air is compressed (charging), stored, and expanded (discharging).
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Benefits:
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- Mature bulk storage
- Low cost per kWh potential
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Challenges:
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- Geographical limitations
- Requires fuel for heating producing CO2 emissions
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Technology Variations:
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Applications:
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Bulk, long-duration services
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AC RTE Efficiency:
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40-55%
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Cycle Life:
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30 years
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Technology Readiness Level (TRL):
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9 - Fully Mature
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Installed Capacity:
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~500 MW
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