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Presentations and video from Medium-Duration Energy Storage, which took place on 16th March 2022 at IMechE, London

The importance of Medium Duration Energy Storage 

As the UK decarbonises its economy, offshore wind turbines and solar PV panels will deliver increasingly larger fractions of the country’s energy demand. 

Energy storage will become one of the main mechanisms to maintain a balance between electricity generation and demand in a renewable-dominated electricity grid. 

Energy storage will be required over a vast range of discharge times, going from milliseconds up to several months.  

This event, which took place at IMechE in London, focused on the medium duration range (between 4 to 200 hrs), which is best handled by thermo-mechanical solutions.  

The event brought together academics, industrial stakeholders, and policy makers together to discuss:  

  • what is the extent of the role for medium duration energy storage? 
  • what are some of the current blockers? 
  • what new policies are required to support the deployment of medium duration storage technologies.  

You may also be interested in our Hydrogen Storage in Caverns event

We also held a hydrogen Storage in Caverns event at the Geological Society in London on Monday 14th March 2022. If you are interested in the discussions that took place at this event, and to view the presentations and video, visit the page.

Presentations from Medium Duration Energy Storage

The presentations from each of the speakers can be found below, as can the videos from the event.

Video for the morning session

10:00 10:10

Prof. Seamus Garvey, University of Nottingham: “Welcome and opening remarks”


National Grid, Alex Hart: “The need for medium duration energy storage”


Energy Dome, Rembrandt Niessen and Francesco Oppici: “A CO2 based thermo-mechanical energy storage solution”

11:10 – 11:40

SSE Renewables, Sean Kelly: “Coire-Glas: A pumped hydro project in Scotland”

Video for the presentations from 12:00 – 13:00

12:00 – 12:30

Malta, Dr. Michael Geyer: “Utility scale long duration synchronous pumped heat electricity storage for the energy transition”

12:30 – 13:00

Cheesecake Energy, Michael Simpson: “A modular, tank-based compressed air energy storage system”

13:00 – 13:45

Videos from 13:45 – 15:15

13:45 – 14:15

Siemens Gamesa, Maxwell Cameron-Jones: “NetZero grid challenges, SGRE’s ETES elicits the stone-age”

14:15 – 14:45

Highview Power, Kiran Munji: “LAES fit for a Renewable world”

14:45 – 15:15

DNV-GL, Alistair Steele: “Bankability assessments of medium duration storage systems”

15:15 – 15:35

Video for the final presentation and discussion panel


Flasc B.V. Daniel Buhagiar: “Hydro-Pneumatic Energy Storage for Offshore Applications”

15:45 – 16:25

Discussion Panel: A thought-provoking panel featuring delegates from BEIS (Chris Quarton), Ofgem (Francis Mosley), the REA (Frank Gordon) and CREDS (Prof. Nick Eyre)

16:25 – 16:30 Closing words
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