Energy code timetable
Proposed dates we aim to approve or reject changes to energy codes.
Contents
- Energy code proposed changes
- Balancing and Settlement Code (BSC)
- Carbon Capture and Storage Network Code (CCS N Code)
- Connection and Use of System Code (CUSC)
- Distribution Code (DCode)
- Distribution Connection and Use of System Code (DCUSA)
- Grid Code (GC)
- Independent Gas Transporters Uniform Network Code (IGT UNC)
- Retail Energy Code (REC)
- Smart Energy Code (SEC)
- Security and Quality of Supply Standard (SQSS)
- System Operator Transmission Owner Code (STC)
- Uniform Network Code (UNC)
Energy codes can be changed or updated, for example to remove specific requirements.
We approve or reject energy code modifications. The outcome and reason for each change is published in the list of Energy code publications.
You can get further information on proposed changes to energy codes on the Code Administration Code of Practice website.
This page is updated at the end of each calendar month. The page was last updated on the 30 October 2025.
Energy code proposed changes
Proposed changes to energy codes that we are reviewing and dates we aim to decide the outcome.
Balancing and Settlement Code (BSC)
Elexon is the Code Administrator for the Balancing and Settlement Code.
Decision date
P500: Enduring Market Facilitator Budget and Funding Arrangements
Decision date: 21 November 2025
Carbon Capture and Storage Network Code (CCS N Code)
The CCS (Carbon Capture and Storage) Network Code body manages the CCS N Code.
Decision date
CCS001: Clarification of CO2 Venting between Metering Point and Delivery Point
Decision date: 5 November 2025
Connection and Use of System Code (CUSC)
The National Energy System Operator (NESO) is the organisation responsible for the Connection and Use of System Code.
Decision date
CMP397: Consequential changes required to CUSC Exhibits B and D to reflect CMP316 (Co-Located Generation Sites)
Decision date: to be announced
CMP315: TNUoS: Review of the expansion constant and the elements of the transmission system charged for
Decision date: to be announced
CMP375: Enduring Expansion Constant & Expansion Factor Review
Decision date: to be announced
CMP330: Allowing new Transmission Connected parties to build Connection Assets greater than 2km in length
Decision date: to be announced
CMP374: Extending contestability for Transmission Connections
Decision date: to be announced
CMP432: Improve “Locational Onshore Security Factor” for TNUoS Wider Tariffs
Decision date: 3 November 2025
CMP344: Clarification of Transmission Licensee revenue recovery and the treatment of revenue adjustments in the Charging Methodology
Decision date: 21 November 2025
CMP316: TNUoS Arrangements for Colocated Generation Sites
Decision date: to be announced
Distribution Code (DCode)
The Energy Networks Association is the body responsible for the Distribution Code.
Decision date
There are no modifications to the Distribution Code with us for decision.
Distribution Connection and Use of System Code (DCUSA)
Electralink is the body responsible for the Distribution and Use of System Agreement.
Decision date
DCP446: Emergency Disconnections
Decision date: 14 November 2025
DCP412: Discounts from TCR charges for ‘peaky’ final demand customers
Decision date: to be announced
DCP439: Backdating Tariff Changes
Decision date: 6 October 2025
DCP439: Backdating Tariff Changes
Decision date: 17 November 2025
Grid Code (GC)
NESO is the body responsible for the Grid Code.
Decision date
GC0174: Review of obligations to provide EU Transparency Availability Data as specified in OC2.4.7
Decision date: 28 November 2025
GC0169: Material changes arising from Grid Code Modification GC0136
Decision date: 9 January 2026
Independent Gas Transporters Uniform Network Code (IGT UNC)
The Independent Gas Transporters’ (IGT) Uniform Network Code (UNC) is the body responsible for the Independent Gas Transporters Uniform Network Code.
Decision date
IGT176: Changes to IGT UNC to enable UNC0887 ‘Facilitating Bi-Directional Connections Between IGT Pipelines and the NTS’ - IGT UNC
Decision date: 30 November 2025
IGT165: Independent Shrinkage Expert and Independent Shrinkage Charge - IGT UNC
Decision date: to be announced
Retail Energy Code (REC)
The Retail Energy Code Company limited is the body responsible for the Retail Energy Code.
Decision date
R0216 REC Changes to tie in with DCP419
Decision date: to be announced
Smart Energy Code (SEC)
The Smart Energy Code Company houses the Smart Energy Code Administrator and Secretariat. SECCo is the body responsible for the Smart Energy Code.
Decision date
There are no modifications to the SEC with us for decision.
Security and Quality of Supply Standard (SQSS)
NESO is the body responsible for the Security and Quality of Supply Standard.
Decision date
There are no modifications to the SQSS with us for decision.
System Operator Transmission Owner Code (STC)
NESO is the body responsible for the System Operator - Transmission Owner Code.
Decision date
CM078: STC change for CUSC Modification CMP328 - Connection Trigger Distribution Impact Assessment
Decision date: to be announced
Uniform Network Code (UNC)
The Joint Office of Gas Transporters is the body responsible for the Uniform Network Code.
Decision date
UNC0900: Amendment to the Gas Quality NTS Entry Specification at Biomethane System Entry Points
Decision date: to be announced
UNC0843: Establishing the Independent Shrinkage Charge and the Independent Shrinkage Expert | Joint Office of Gas Transporters - Gas Governance
Decision date: to be announced
UNC0903: The Introduction of a Single NTS Capacity Reference Price
Decision date: to be announced