In partnership with AESP: The increasing roles of DERs, connected technology and Big Data are driving rapid change in energy efficiency. As we shape the Utility of the future, this community will help you keep up with the latest developments. 


You need to be a member of Energy Central to access some features and content. Please or register to continue.


Energy Storage Technique's Comparison of Efficiency and Energy Density

Energy Storage Technique's Comparison of Efficiency and Energy Density

Energy storage technologies are commonly classified according to storage principle, or family. There are four energy storage families. The members of a family may change in accordance with technological evolutions. Therefore, the examples in each category should not be seen as an exhaustive list of potential family members.

Energy Storage Techniques: Comparison of Efficiency and Energy Density



Energy Density


Liquid air energy storage with heat recovery

21.6- 56.9%

107 kWh/m3

Compressed air energy storage

42- 54%

2- 6 kWh/m3

Pumped hydro energy storage

70- 85%

0.28 kWh/m3



Lithium ion batteries


300 kWh/m3

Sodium sulphurate batteries



150- 250 kWh/m3

Lead acid batteries


70 kWh/m3


Redox flow batteries

75- 85%

25- 35 kWh/m3






160 kWh/m3



28- 45%

6.5 kWh/m3



Sensible heat storage

50- 90%

25 kWh/m3


Latent heat storage

75- 90%

100 kWh/m3


Thermo-chemical energy storage


120-250 kWh/m3



Dr. Amal Khashab's picture

Thank Dr. Amal for the Post!

Energy Central contributors share their experience and insights for the benefit of other Members (like you). Please show them your appreciation by leaving a comment, 'liking' this post, or following this Member.


Matt Chester's picture
Matt Chester on Feb 18, 2020 3:28 pm GMT

Do you see any of these technologies as imminently improving in an appreciable way that will make their numbers look even better?

Dr. Amal Khashab's picture
Dr. Amal Khashab on Feb 18, 2020 9:31 pm GMT

I beleive that Liquid air energy storage with heat recovery technique (LAES) is candidate to be improved more better . Buty of LAES is small area needed for a project. Can you immagine an area of (90m X 30m) is sufficient for (25MW/112.5MWh)  LAES project ?


Get Published - Build a Following

The Energy Central Power Industry Network is based on one core idea - power industry professionals helping each other and advancing the industry by sharing and learning from each other.

If you have an experience or insight to share or have learned something from a conference or seminar, your peers and colleagues on Energy Central want to hear about it. It's also easy to share a link to an article you've liked or an industry resource that you think would be helpful.

                 Learn more about posting on Energy Central »