Classification of energy storage system

 Energy storage system

The transmission line companies can be the owners of the energy storage systems. The national electricity plan highlights the role of energy storage in maintain grid security with maintaining grid security with penetration of renewable energy to large extent. The Indian energy storage market is largely driven by the lead acid batteries for back up applications. The classifications of energy storage device is given here.

Classification of Energy storage devices

Mechanical Energy Storage

• Pumped hydrogen energy storage
• Compressed air energy storage
• Flywheel energy storage

Electrochemical Energy Storage

• Lead acid batteries, advanced lead acid (lead carbon, bipolar lead acid)
• Lithium batteries (LCO, LMO, LFP, NMC, LTO, NCA)
• Flow batteries (ZnBr, Vn Redox)
• Sodium batteries (Nas, NaNiCL₂)
• Zinc batteries (Zn Air, ZnMno₂)

Thermal Energy Storage

• Sensible molten salt, chilled water
• Latent ice storage, phase change materials
• Thermochemical storage

Electrical Energy Storage

• Super capacitors
• Super conducting magnetic energy storage (SMES)

Chemical (Hydrogen) Electro-chemical Energy Storage

• Power to power (Fuel Cells etc.)
• Power to gas