Transmission Entry Capacity (TEC) register

NESO·data_release·medium·13 Jan 2021·162 words·source

Summary

NESO has published the Transmission Entry Capacity (TEC) register, listing all projects with contracts to connect to or use the National Electricity Transmission System. The register includes existing and future connection projects and will be updated from November 2025 to include a new 'Gate' column showing whether agreements are Gate 1 or Gate 2 under the Connections Reform process.

Why it matters

This provides transparency into the transmission connection pipeline, helping industry track which projects have secured capacity and their stage in the connections process. The addition of Gate classifications will improve understanding of how projects are progressing under the reformed connections framework.

Key facts

•Register covers projects connected to or using the National Electricity Transmission System
•New 'Gate' column to be added from 21 November 2025
•Gate column will show Gate 1 or Gate 2 classification under Connections Reform
•CUSC paragraphs 6.30.3.2 and 6.35.2 have been updated
•Capacity data currently aggregated across stages and technology types
•Future updates will split capacity by stage and technology

Timeline

Effective date21 Nov 2025

Areas affected

transmissiongrid connectionsgeneratorsrenewables

Related programmes

Connections Reform

Publisher description

A list of projects that hold contracts for Transmission Entry Capacity (TEC) with us. These include existing and future connection projects and projects that can be directly connected to the National Electricity Transmission System (NETS), or make use of it. **NOTE:** Following updates to CUSC paragraphs 6.30.3.2 and 6.35.2, the Transmission Entry Capacity (TEC) Registers will include an additional column called “Gate” from 21st November

Full extracted text

A list of projects that hold contracts for Transmission Entry Capacity (TEC) with us.<br>
These include existing and future connection projects and projects that can be directly connected to the National Electricity Transmission System (NETS), or make use of it.<br>

<b> **<span style="color: rgb(176,74,42)">NOTE:</span>** Following updates to CUSC paragraphs 6.30.3.2 and 6.35.2, the Transmission Entry Capacity (TEC) Registers will include an additional column called “Gate” from 21st November,2025 indicating whether agreements are classified as Gate 1 or Gate 2.  This column will be populated once agreements have been countersigned.  Until that point, the field will remain blank.
Please note:
<br/> 1) Capacity across stages and technology types is currently presented in aggregate, which may result in duplicate entries.  This will be refined as the register process evolves, with future updates aiming to split capacity by stage and technology to improve clarity and accuracy.
<br/> 2) This approach ensures transparency while reflecting the current status of agreements under the Connections Reform process.  </b>