The EFDA JET Fusion Flywheel Energy Storage System is a 400,000kW energy storage project located in Abingdon, England, UK.

The electro-mechanical energy storage project uses flywheel as its storage technology. The project was commissioned in 2006.


The EFDA JET Fusion Flywheel Energy Storage System is owned by EFDA-JET (100%).

The key applications of the project are onsite power and frequency regulation.

Additional information

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The peak of consumption here is during a 300s JET pulse – where over 300 MW of electrical power is pulled from the grid, and up to 400 MW is supplied from two large flywheels located in Culham, U.K. However, this is only for 30 seconds, every 20-30 minutes.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.