Alumina Packed Bed Energy Storage

The Alumina Packed Bed Energy Storage (APB-ES) system stores and recovers energy up to 1000 °C using Alumina Energy's patented storage and recovery method and specially designed thermal storage modules.

The system utilizes a high temperature stable storage material with high thermal conductivity and heat capacity, which benefits the APB-ES system with higher energy densities and significantly lower capital cost. 

One of the main differences between Alumina Energy’s APB-ES system and its energy storage competitors is its unique ability to provide extremely modular and easy to install energy storage systems which can be used for a variety of market applications.

APB-ES can be configured for many applications in power generation and process heat systems. In summary, the APB-ES system can be incorporated into renewable generation systems (solar thermal, PV, wind) to mitigate renewable intermittency, increase system capacity, reduce levelized cost of electricity (LCOE). In conventional fuel-fired power and heat generation systems incorporating APB-TES can provide from a low-cost, easily installable source for capacity expansion, improved plant flexibility, maintain higher equipment performance decreasing fuel and maintenance cost, improve revenue potential, and reduce emissions.

Alumina Packed Bed Energy Storage Advantages

  • Patented solid-state energy storage technology based on highly optimized storage and recovery and specially designed packed bed modules to manage heat loss and pressure drop challenges
  • Extremely low capital cost

  • High storage and recovery efficiencies, round trip efficiency +95%

  • Fully modular and scalable system, MWh-th to GWh-th

  • Wide operational temperature, from 150 °C to 1,000 °C

  • Compatible with multiple energy sources (air, flue gas, He, CO2, steam, electricity)

  • High energy density 

  • Short to long duration storage and recovery capability optimized for specific customer demands

  • Durable and safe system engineered from inexpensive and readily available off the shelf materials

  • Long life cycle (+30 years) 

  • Minimal operations and maintenance cost

  • Modular design eliminates on-site fabrication and allows for volume manufacturing in warehouse, easy transportation and installation

Our energy storage solution eliminates the limited efficiencies, high cost and geographical deployment challenges that have traditionally impeded current state of the art energy storage systems, such as Pumped Hydro Storage (PHS), Compressed Air Energy Storage (CAES), Batteries, and other Thermal Energy Storage (TES) systems, such as Hot/Cold Water, Molten Salts or Concrete.

Alumina Energy and its strategic partners provide complete APB-ES solutions across the entire project life cycle, including design, engineering, and system optimization, to fabrication, delivery, and installation.



  • R. Anderson, L. Bates, E. Johnson, J.F. Morris, Packed bed thermal energy storage: A simplified experimentally validated model, Journal of Energy Storage, 4, 2015
  • Bueno, P.C., Bates, L., Anderson, R., and Bindra, H., “Thermal Energy Storage for the Supercritical CO2 Brayton Cycle,” GT2015-44054, Proc. ASME Turbo Expo 2015 GT2015, Montréal, Canada, June 15-19, 2015.
  • Ryan Anderson, Samira Shiri, Hitesh Bindra, Jeffrey F. Morris, `Experimental results and Modeling of Energy Storage and Recovery in a Packed Bed of Alumina Particles', Applied Energy, 119, 2014
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 Alumina Packed Bed Energy Storage Applications


Concentrating Solar Power (CSP)

  • Power Generation (dish or tower configuration)
  • Process Heat (dish or tower configuration)

Heat & Power Systems

[Gas Turbine, Micro-Turbine, Reciprocating Engines, Fuel Cell]

  • Combined Cycle Power Plant (CCPP)
  • Single Cycle Power Plant 
  • Combined Heat & Power (CHP)
  • Co-generation
  • District Heating
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Waste Heat Recovery

  • Petroleum and Coal Products [+600 trillion BTUs of 450-1,200 °F waste heat per year]
  • Chemical Manufacturing [+100 trillion BTUs of 450-1,200 °F waste heat per year]
  • Metal Manufacturing  [+100 trillion BTUs of >1,200 °F waste heat per year]
  • Mineral Production [+100 trillion BTUs of 450-1,200 °F waste heat per year]

Please contact us to learn more about how our energy storage solutions can help you radically reduce damage to the enviroment while improving the efficiency, reliability, and profitability of your power generation and process heat systems