Amendments to Data Assurance Guidance (DAG) submissions

Share the page

We consulted on proposed amendments to the Data Assurance Guidance (DAG) from 9 December 2024 to 10 January 2025. 

Our decision on the proposed amendments affect:

• electricity and gas transmission licensees 
• electricity and gas distribution licensees
• electricity system operator licensees
• gas system planner licensees

The requirements are set out in the DAG, including associated reporting templates.

These requirements will take effect from 30 January 2025.

Read our decisions on this page.

Ofgem’s RIIO framework includes Data Assurance licence conditions for all licensees.

Main document

[Decision Notice on modifications to the DAG Jan 2025 [PDF, 117.74KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-01/Decison%20Notice%20on%20modifications%20to%20the%20DAG_Jan%202025-20250127164013.pdf)

Subsidiary documents

[DAG Guidance Document v2.4 [PDF, 603.55KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-01/Ofgem_DAG_Guidance_Document%20v2.4-20250129142411.pdf)

[DAG Guidance Document v2.4 Tracked [PDF, 669.63KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-01/Ofgem_DAG_Guidance_Document%20v2.4_Tracked-20250127165323.pdf)

[Risk Assessment Template v2.4 [XLSX, 323.27KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-01/Copy%20of%20Ofgem_Risk_Assessment_Template_v2.4-20250127165324%20%28002%29.xlsx)

[Exceptional Submission Assurance Template v2.4 [PDF, 132.05KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-01/Ofgem_Exceptional_Submission_Assurance_Template_v2.4-20250127165326.pdf)

[NetDAR Template v2.4 [PDF, 386.09KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-01/NetDAR_Template_v2.4-20250127165327.pdf)

Share the page