Dynamic Moderation (DM)

Dynamic Moderation (DM) rapidly delivers with the aim of assisting the ESO to keep frequency within operational limits. Providers of DM will help manage sudden large imbalances between demand and generation such as due to an erroneous wind forecast by responding quickly when frequency moves towards the edge of the operational range.

Currently, the electricity system is experiencing lower inertia and larger, more numerous losses than ever before. Faster acting frequency response products are needed because system frequency is moving away from 50Hz more rapidly as a consequence of imbalances.

The ESO aims to deliver a new suite of faster-acting frequency response services to support our operations as the electricity system is decarbonised. Dynamic Moderation alongside Dynamic Regulation will complete the suite of new end-state services that will mitigate this risk following the launch of Dynamic Containment.

Further enquiries
[email protected]

Latest news and updates

10 May 2022

The dashboard containing the results for DM, DR and DC is now live. You can access it by clicking the date above.

6 May 2022

Today is the launch of DM. The first auction will take place on the EPEX auction platform at 14:30. Then the first delivery will take place from 23:00 tonight to 23:00 tomorrow.

11 March 2022

We have published the final consultation documents, the updated DR Testing Tool and HELENA algorithm description. To view the latest comms with all the information, select the date above.

10 March 2022

Ofgem have published their approval of the DR derogation and DM/DR consultation documents. You can view the approval letters by selecting the date above.

8 March 2022

We have published the slides and recording of the mock auction review webinar. You can view the content by selecting the date above.

4 March 2022

We have recently sent out comms regarding information on the IT systems used for DM and DR. You can view the content by selecting the date above.

21 February 2022

We have published guidance on LFSM and symmetrical bid calculations. You can access the documents by selecting the date above.

15 February 2022

To see the latest comms including a reminder of IT requirements for BM and non-BM providers and the link to the BM stacking document, select the date above.

10 February 2022

You are now able to onboard via the Single Markets Platform for both DM and DR. For more information, select the date above.

9 February 2022

We have published the draft consultation documents that we submitted to Ofgem in January. Please note these documents are pending Ofgem approval. You can view the documents in the legal documents folder by selecting the date above.

7 February 2022

We have published the updated FAQ document with the rest of the Q&A from the latest webinar. You can view the document by selecting the date above.

2 February 2022

For the latest information for non-BM providers on ASDP, please view the recent comms by selecting the date above.

1 February 2022

We have published the updated FAQ document with Q&A from the latest webinar. You can view the document by selecting the date above.

31 January 2022

We have published an updated version of the Performance Monitoring CSV template. You can view the document by selecting the date above.

31 January 2022

We have published the webinar recording from the DM/DR webinar on the consultation proposed changes and further IT information. You can view the video by selecting the date above.

28 January 2022

We have published the slides from the webinar earlier this week on the consultation proposed changes and further IT information. You can view the slides by selecting the date above.

13 January 2022

We have published comms on the consultation proposed changes, disarming instructions and information on integration points for BM and Non-BM providers. You can view the content by selecting the date above.

15 December 2021

We have published a new version of the DM/DR FAQ document. It can be found in the document library.

14 December 2021

We have published the Performance Monitoring CSV template. This document is not included in the consultation so if you have any questions please contact us via the email address above. The document can be viewed by clicking the date.

10 December 2021

We have published a new version of the DM/DR FAQ document. It can be found in the document library.

10 December 2021

We have published the DM Testing Analysis Tool and user guide which can be found in the document library. These documents complete the suite of testing documentation but please note they are not included as part of the consultation.

1 December 2021

We have published the DM and DR FAQ document including Q&A from recent webinars. The Q&A from the technical consultation webinar will be added shortly. The document can be viewed by clicking the date above.

30 November 2021

Following the consultation technical webinar held on 30 November, we have published the slides and webinar recording. The slides can be viewed in the document library and the webinar recording can be viewed by clicking the date above.

29 November 2021

We have uploaded a video that talks you through the DM & DR Service Terms in detail. It can be viewed by clicking the date above.

24 November 2021

We have uploaded the consultation overview webinar recording. It can be viewed by clicking the date above.

23 November 2021

Following the consultation overview webinar held on 23 November, we have published the slides which can be viewed by clicking the date above. FAQ document to follow shortly.

15 November 2021

We have launched an EBR Article 18 Consultation on the contractual terms for DM and DR. For more information on the documents and available support during the consultation, click the date above.

10 November 2021

We have published the Q&A document from the Response and Reserve webinar. Click the date above to download the document.

4 November 2021

Following the Response and Reserve webinar held on 4 November, we have published the webinar recording which can be accessed here and the slides which can be found in the document library.

27 October 2021

We will be hosting a Response and Reserve webinar on 4 November at 1pm - more information and the sign up link can be accessed here.

2 September 2021

As discussed at the Single Market Platform webinar, due to discovering more complexities with developing the new services we are pushing the consultation dates back. See the delivery timeline section below for more information.

16 July 2021

Following the publication of the workshop feedback video, we have also published FAQs from the workshops. The document can be viewed here.

2 July 2021

Following the technical workshops held in June, we have published a summary video of the feedback we received. The recording can be viewed here. A copy of the slides can be found in the document library.

28 May 2021

We have published the feedback from the Response Reform webinar on the DM and DR service design. The document can be accessed here.

30 April 2021

Following the Response Reform webinar on 29 April, we have published the slides, recording & FAQ document. The recording can be viewed here. The FAQ document and slides can be found in the document library.

23 March 2021

As part of Markets week, we have published the Frequency Response Reform podcast which discusses the new DM service. The podcast can be accessed here.

Key documents and guidance

Visit the document library for all documents relating to Dynamic Moderation.

FAQ document

Read our frequently asked questions in the document library regarding Frequency Response Reform including Dynamic Moderation.

Future of balancing services updates

Register for updates by completing a short form.

Key information

  • Key information on testing ahead of launch for both BM and non-BM providers can be found here.

  • We are pleased to share that Ofgem have approved the EBR Article 18 Consultation for Dynamic Moderation (DM) and Dynamic Regulation (DR) which launched last November.  The approval letters can be found here.

  • The final versions of the consultation documents can be found under the 'How to participate' tab in the 'Legal documents' folder. We have also provided a link in this section to the tracked changes versions of the documents for reference and a document including a summary of the changes.

  • Ofgem has accepted the Clean Energy Package Article 6(2) derogation for Dynamic Regulation (DR). This is in addition to the approval on the derogation for Dynamic Moderation (DM) that has already been confirmed by Ofgem. The approval letter can be viewed here.

  • The Single Markets Platform (SMP) will be the route through which interested parties are able to register and pre-qualify to participate in DM. For more information on the SMP, please select here.

  • The latest DM and DR delivery plan can be found below. 

DM and DR delivery plan

DM & DR delivery plan showing DR launching on the EPEX platform in late March and DM launching on EPEX in April.

The two other services in Response Reform

National Grid ESO - wind turbines in large field

Dynamic Containment

Find out more about Dynamic Containment

National Grid ESO - carbon intensity - mountains and clean air

Dynamic Regulation

Find out more about Dynamic Regulation