Enhanced frequency response is defined by National Grid Electricity Transmission as being a service that achieves 100% active power output at 1 second (or less) of registering a frequency deviation. This is in contrast with existing frequency response services of Primary and High which have timescales of 10 seconds, and Secondary which has timescales of 30 seconds. This is a new service that is being developed to improve management of the system frequency pre-fault, i.e. to maintain the system frequency closer to 50Hz under normal operation.
National Grid has procured 200MW of enhanced frequency response through the tendering exercise held in July 2016. Results were published on 26th August and the list of tenders submitted can be found on the link on this page.
This report summarises the tender process and lists the successful tenders. A full list of all assessed tenders can be found in the document list below.
NGET hosted a seminar for pre-qualified parties on 2nd June 2016 to provide more information and answer questions on the proposed service
This is the ITT pack for pre-qualified parties to the enhanced frequency response tender