It is the world’s largest single-location battery storage deployment outside China with a capacity of 3.37 Gigawatt-hour (GWh).
About Battery Energy Storage System (BESS)
- It is an electrochemical setup that captures excess electrical energy and stores it for later use.
- It offers flexibility in grid connection and can operate in local mode when the grid is unavailable.
- Significance: ~336 GWh of energy storage capacity is needed by 2029-30 to facilitate reliable integration of renewable energy. (Central Electricity Authority)
- Types of BESS
- Traditional Solid Rechargeable Batteries: Stores Energy in solid metal electrodes. E.g., Lead Acid Batteries, Lithium-Ion Batteries, Zinc Air Batteries, etc.
- Flow batteries: Energy is stored in flowing liquid electrolytes kept in tanks separately. E.g., vanadium redox flow batteries, zinc-iron flow batteries, zinc-bromine batteries, etc.
- Challenges: Limited storage capacity; high upfront costs; Dependency on imports for input material (lithium, cobalt); improper disposal pose environmental risks etc.
Initiatives for BESS deployment in India
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