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National Grid and RES are working on the first battery energy storage systems to provide a dynamic frequency response service in sub-second timescales in Great Britain.

The parties have signed a four year contract that will see RES (Renewable Energy Systems) provide 20MW of frequency response from battery storage. This is a new service which will aid National Grid in performing its system balancing role, which increasingly requires innovation and the use of new technologies.  The services delivered by RES’ battery storage systems will provide frequency response to the grid within one second of the detection of a frequency deviation. The battery storage systems will be fully operational within 18 months.

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