Fast reserve

Fast reserve provides rapid and reliable delivery of active power through increasing output from generation or reducing consumption from demand sources.

Thank you to all who attended the webinar last week. We have now published a copy of our FAQs for the Clean Energy Package, which aims to give further clarity on the Clean Energy package and to answer the questions raised during the meeting.

6 August - Following the webinar yesterday on the Clean Energy Package and Reserve services, we have published the slides and a recording of the webinar. We have also shared a quick one minute survey to gather your preferences on how you would like us to engage with you in the future. The survey can be accessed here.

29 July - We have published a podcast to provide more information on the Clean Energy Package Regulations 6.9 and 6.4. We also explain how this impacts Fast Reserve as we transition to procuring closer to real-time under our RIIO-2 commitments. 

16 July - We have published an update to our letter from 18 June on the future of Fast Reserve tenders.  For any queries you may have, please contact your account manager or a member of the team at [email protected]

18 June - We have published an update to our letter from 29 January on the future of Fast Reserve tenders. We have also published a short survey to help us understand any potential barriers and timescales providers face in meeting the Clean Energy Package requirements. For any queries you may have, please contact your account manager or a member of the team at [email protected]

29 January - We have published an update to our letter from 14 January on the future of Fast Reserve tenders.
For any queries you may have, please contact your account manager or a member of the team at [email protected]

14 January - We have published a letter regarding the suspension of the monthly procurement of Fast Reserve, including the January tender round.

We will keep you updated on our plans for the future and once we have clarity, we will provide you with an update on what this means for subsequent planned tender rounds for STOR and Fast Reserve.

18 January 2019 – Following the publication of the Detailed Change Proposal on the 5 December 2018, please see an update with regards Monthly Delivery Reconciliation Payment.

5 December 2018 - Following the publication of the Outline Change Proposal for Fast Reserve, the Detailed Changed Proposal has now been issued. We would like to express thanks to all parties who responded to the OCP. The updated Standard Contract Terms have been issued alongside the Detailed Change Proposal, for ease of comparing a redline version of the SCTs have been issued.

We have published the Outline Change Proposal (OCP) for Fast Reserve.  This is an opportunity for the industry to feedback on the proposed changes to the service.  Part of this OCP is the simplification of the Standard Contract Terms (SCT) as stated in the product road map for frequency response and reserve. Please use this link for the draft version of the simplified SCTs included in this OCP. The deadline for responses is 5pm on the 8 October 2018.

We use fast reserve, in addition to other energy balancing services, to control frequency changes that might arise from sudden, and sometimes unpredictable, changes in generation or demand.

Who can provide this service

The fast reserve service is open to both Balancing Mechanism (BM) and non-BM providers who can meet the technical requirements.

This might include generators connected to the transmission and distribution networks, storage providers and aggregated demand side response.

Providing fast reserve alongside other balancing services

Providers can offer other balancing services outside of their tendered fast reserve windows. However, units must be ready to respond to a fast reserve instruction at the start of each fast reserve window.

Service dispatch

When do providers need to be available to deliver this service?

We'll notify successful providers of the times that the service may be required on the 12th business day of each month. These are called the nomination windows. 

The fast reserve service is required 24 hours a day, 7 days a week. However, there is a greater requirement for the service during the daytime, typically between 06:00-23:00. 

How will providers be dispatched?

The fast reserve service is dispatched electronically. Units providing fast reserve must be ready to receive instructions at the start of each fast reserve window to allow them to be automatically dispatched. 

How often will providers be dispatched?

For fast reserve, utilisation can vary depending on system conditions, the demand profile and the generating plant on the system. However on average, providers are utilised for approximately five minutes at a time, ten times a day. The providers are still but are expected to have the capability to sustain reserve for 15 minutes.