Statera Energy is pleased to announce that it has secured an additional Firm Frequency Response agreement with National Grid for its second Battery Energy Storage System (BESS), the Creyke Beck storage facility. The site was commissioned in November 2018 and is currently one of the largest batteries operating on the UK grid.
The 1-month contract, secured in the April tender round, was the fourth contract awarded to the project to date. Under the terms of the agreement, the BESS will monitor and respond to changes in system frequency through the night by dynamically increasing its import when the frequency increases, and export when the frequency decreases.
National Grid’s recently published System Operator Innovation Strategy document highlighted that maintaining system stability was their top priority for 2019/20. This is being driven by issues with both system inertia and voltage, as well as the enabling more renewables penetration on the UK grid.
To help manage system inertia, and keep it around the targeted level of 50Hz, National Grid procures a number of Frequency Response services. Instability in system frequency can be caused by a number of factors including existing power stations going offline or sudden changes in renewable energy generation. This issue is expected to increase with the transition to a low carbon generation mix, with increasing amounts of solar and wind which will cause in faster frequency changes.
Under a typical Firm Frequency Response agreement providers must deliver a service which can reduce demand or increase overall generation when informed by the National Grid. Services can be either:
Dynamic: where energy fluctuates in real time to respond to system frequency; or
Static: where energy changes only happen after a pre-determined frequency level is reached.
The Creyke Beck storage facility located near Cottingham, Humberside, consists of over 75,000 individual battery cells and has a combined capacity of 49.99MW, the equivalent to approximately 13,000 average UK homes. The site can be activated and reach its full capacity in under 1 second, providing highly efficient delivery or offtake of electricity to the grid based on system needs, whether that be due to shortages or oversupply in network connected generation, or sudden changes in nationwide demand.
More project details coming soon.