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Delays and exits in the transmission queue since 2021How often connection dates move, and how many projects leave the queue. Gate 2 in the transmission queueHow much of the queue has a Gate 2 offer, and what it did to connection dates. The battery queue and CMP470’s commitment feeHow far the battery queue sits above the line that would switch CMP470’s commitment fee off. Changes of customer in the transmission queueHow often connection agreements move between companies, and how those projects fared. Do projects connect on time?How late stages have connected against their connection date in the register. Which connection dates slip least?Which connection dates are pushed back least, allowing for how far ahead they are. Grid outages and the connections due by 2030How many of their planned outages the transmission owners carry out, against the connections due by 2030.

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Transmission / Projects / South Scotland

Branxton Energy Storage Facility

EastCoastGridServices Ltd at Branxton 400kV Substation

Connection date
13 May 2029
Gate
Not stated
Status
Scoping
Planning consent
Granted 19 Dec 2023
Scottish Government (S36), reference ECU00004659 · Source: REPD
Technology
Storage
Total capacity
750 MW
Connected now
0 MW
Still to connect
750 MW
Transmission owner
SP Energy Networks (SPT)
Agreement type
Direct Connection
Region
South Scotland
Project number
PRO-002076
In the register since
September 2022

What would CMP470’s commitment fee do to a battery like this? See the use case: Will CMP470’s commitment fee clear the battery queue?

Change history

Every change to this project across 151 registers from 29 Jan 2021 to 5 Nov 2026.

  • 19 Dec 2025 register
    Connection point changed from Branxton 400/132kV to Branxton 400kV Substation
  • 28 Mar 2025 register
    Connection date moved from 30 Dec 2027 to 13 May 2029 (+16 months)
  • 27 Sep 2024 register
    Connection point changed from Branxton 400kV Substation to Branxton 400/132kV
  • 30 May 2023 register
    Connection point changed from Bowsheil 132kV Substation to Branxton 400kV Substation
  • 28 Apr 2023 register
    Connection point changed from Branxton 400kV Substation to Bowsheil 132kV Substation
  • 28 Apr 2023 register
    Capacity changed from 500 MW to 750 MW
  • 31 Jan 2023 register
    Customer changed from GRIDCODEPOWER LTD to EastCoastGridServices Ltd
  • 23 Dec 2022 register
    Customer changed from EastCoastGridServices Ltd to GRIDCODEPOWER LTD
  • 23 Dec 2022 register
    Substation name updated in the register (from Branxton 400kV to Branxton 400kV Substation)
  • 30 Sep 2022 register
    Added to the register

Also at Branxton 400kV Substation

Substation view

2 other projects, 3.5 GW still to connect at this substation in total. 1.2 GW is due to connect here before this project’s connection date of 13 May 2029.

Status definitions (NESO)

Scoping: NESO is not aware that a planning application has been made.

Awaiting Consents: NESO is aware, or the customer has told it, that a planning application has been made.

Consents Approved: NESO is aware, or the customer has told it, that the planning application has been approved.

Terminated: used by NESO only in its register of 30 April 2021, for two projects that left the register the next month.

These statuses are NESO’s, not QueueWatch’s, and NESO describes them as “as far as we are aware”, so a project may be further along than its status shows.

Source: NESO

Planning consent

The planning decision or stage for this project, from DESNZ’s Renewable Energy Planning Database (REPD), July 2026 edition, with the planning authority and its reference. QueueWatch matched the project to that record. NESO’s status can lag behind planning decisions, so the two may differ.

How QueueWatch matches projects · Spotted a wrong match? Email info@queuequant.com.