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Electrical Energy Storage


Electricity cannot itself be stored on any scale, but it can be converted to other forms of energy which can be stored and later reconverted to electricity on demand, reducing imbalances between energy demand and production. Energy, however, comes in multiple forms including radiation, chemical potential, gravitational potential, electrical potential, electricity, elevated temperature, latent heat, and acceleration. Storage systems for electricity include battery, flywheel, compressed air, and pumped hydro storage.



Fact Sheets

  • Organic Flow Battery
  • Vanadium Redox Flow Battery
  • High-Temperature Battery
  • Lead-Acid Battery
  • Li-Ion Battery

Application Examples

  • Li-Ion Self-Consumption
  • Li-Ion Primary Control Power
  • Li-Ion Primary Control Power Systemic Services


Fact Sheets

  • Flywheel Energy Storage
  • Pumped-Storage Hydroelectricity (PSH)
  • Compressed-Air Energy Storage (CAES)
  • Liquid-Air Energy Storage (LAES)
  • Gravity Battery

Application Examples

  • Flywheel UPS
  • Flywheel Storage Braking Energy Recuperation
  • Compressed-Air Storage Primary Control Power Systemic Services
  • Pumped-Storage Hydroelectricity Plant


  • Superconducting Magnetic Energy Storages
  • Capacitors