CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 | National Energy System Operator
Summary
NESO proposes extending User Commitment Methodology principles from CUSC section 15 to users under Final Sums methodology through STC modification CM093, following the approved CUSC change CMP417. The workgroup process is ongoing with meetings through March 2026. This affects how transmission users commit to infrastructure costs under different charging methodologies.
Why it matters
This creates consistency between charging methodologies but may shift cost exposure timing for Final Sums users who previously had different commitment requirements. The modification follows standard governance, suggesting minimal industry opposition to alignment.
Key facts
- •Modification CM093 extends CUSC section 15 User Commitment principles to Final Sums users
- •Follows approved CUSC modification CMP417
- •Standard governance route with high impact on NESO and Transmission Owners
- •Workgroup meetings continuing through March 2026
Areas affected
Related programmes
Memo
CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 | National Energy System Operator Show/Hide Menu Toggle Add to favourites Close tooltip Sign in to add this page to your favourites Sign in or register Show favourites Close Close tooltip Sign in or register to manage your favourites Sign in or register Help You are now signed in Visit My NESO account to view and manage your dataset subscriptions. Maybe later Go to your account CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 This modification seeks to deliver the required changes to the STC as a consequence of CMP417 , which proposes to extend some of the principles of CUSC section 15 “User Commitment Methodology” to Users on Final Sums methodology. Modification status: Current - Workgroup Last updated: 17 March 2026 Code Administrator Contact : Robert Hughes - [email protected] Governance Route: Standard Governance Impacts: High - NESO, Transmission Owners (TOs) Code modification proposed by: Stephen Baker [email protected] Documents Proposal Documents Terms of Refence Workgroup Meetings & Summary Papers Workgroup Consultation Workgroup Report Code Administrator Consultation Draft/Final Modification Report Decision Name CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 Terms of Reference Workgroup Meetings & Summary Papers Name CM093 Action Log CM093 Workgroup Meeting 7 Papers - 23 March 2026 CM093 Workgroup 6 Summary - 26 February 2026 CM093 Workgroup Meeting 6 Papers - 26 February 2026 CM093 Workgroup 5 Summary - 20 January 2026 CM093 Workgroup Meeting 5 Papers - 20 January 2026 CM093 Workgroup Meeting 4 Summary - 01 December 2025 CM093 Workgroup 3 Summary - 03 November 2025 CM093 Workgroup Meeting 3 Papers - 03 November 2025 CM093 Workgroup Meeting 2 Summary - 14 October 2025 Workgroup Consultation Name CM093 Workgroup Consultation and Annexes CM093 Workgroup Consultation CM093 Workgroup Consultation Response Proforma CM093 Alternative Request Form logo--facebook