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Electricity storage
Detalle celda Beta

Electricity storage, as a technological development, appears in response to a necessity to synchronize supply and demand of a commodity that without these storage systems would have to be generated and consumed instantaneously.


The balance between supply and demand of electricity is increasingly fragile due to the contribution of intermittent electricity generation affected by weather effects which are independent of consumption.

While electricity distribution and transmission move electricity over distances from generating power stations to end users, electricity storage can move electricity through time, providing it when and where it is needed.



Electricity storage is a technical necessity to match timing of supply and demand:

  • it enhances utilization of discontinuous renewable energy (solar and wind)
  • it improves operation of power plants and transmission grids allowing a higher energy efficiency

Electricity storage is a reliable alternative for electricity supply and an economic opportunity as it allows higher profits from the electricity market volatility or less costs induced by electricity consumption.


Electricity can be stored in different ways: mechanical, electrochemical, electrostatic/magnetic and chemical. Among the different electrochemical systems, the one which provides a more interesting mix of lifecycle, security/environmental rating, efficiency and cost level is the Vanadium Redox.


KERN has developed a unique electricity storage system (HydraRedox) based on a radically new concept of the Vanadium Redox technology. This technology overcomes the shortcomings and limitations of the conventional Redox technology through a unique design of single cells and other technical innovations.


This new technology (HydraRedox) represents a significant increase in efficiency, reliability and life of storage with lower Capex:

  • DC current efficiency of 95% - high and constant even at low load 
  • Fast reaction time (< 340 microseconds)
  • Ability to charge from continuous or intermittent sources
  • Ability to charge and discharge at up to 4 times nominal power
  • Maximum depth of discharge (up to 100% charge)
  • Unlimited number of cycles of operation without any deterioration
  • Operationally safe (operation at environmental temperature and near atmospheric pressure)
  • Adaptable to a broad range of applications
  • Scalable and modular design
  • Life span of around 30 years of uninterrupted operation

>> Data sheet (Click here)


>> Further information at: www.hydraredox.com

Our services

KERN develops turnkey” projects for systems of a wide range of power (from 5 kW to 50 MW) and energy capacity (from 1 to 24 hours).


KERN offers a wide range of services in this field:


1.- Engineering and projects, including:

  • Turnkey or EPC projects
  • Conceptual engineering
  • Basic detail engineering
  • Auxiliary services

2.- Projects management, including:

  • Feasibility studies (economic and technical)
  • Management and supervision of works
  • Procurement
  • Permitting
  • Legalization
  • Commissioning

3.- Maintenance

Possible applications and references

Electricity storage with HydraRedox technology can be used in a wide range of applications, including:

  • Management and optimization of renewable minimizing production surpluses and flattening the load curve
  • UPS: avoid electricity supply shortages. Replacement of diesel/gas generators 
  • Arbitrage: modification of the energy profile as a function of energy prices and flattening the load curve
  • Improving power quality: improving quality of electrical supply, limiting harmonics, voltage level maintenance, power management and frequency regulation
  • Power reserve: extra capacity connected to the network to be used when short-term supply shortages
  • Frequency control: ability to supply and absorb active energy according to the requirements of the Local Transport Network

In general, this technology has a growing interest and high potential in sectors such as renewable energy, electricity (generation and distribution/transmission), telecommunications, railway, agriculture, healthcare and industry.






>> Key references of projects completed (Click here)