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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

Eccles BESS

Eccles Energy Centre Limited at Eccles 400kV Substation

Connection date
12 Apr 2026 −8 months since 9 Dec
Gate
Gate 2
Status
Under Construction/Commissioning
Technology
Storage
Total capacity
500 MW
Connected now
0 MW
Still to connect
500 MW
Transmission owner
SP Energy Networks (SPT)
Agreement type
Direct Connection
Region
South Scotland
Project number
PRO-001470
In the register since
November 2021

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.

  • 18 Sep 2026 register
    Status changed from Scoping to Under Construction/Commissioning
  • 8 Sep 2026 register
    Given a Gate 2 connection offer
  • 21 Jul 2026 register
    Connection date moved from 4 Dec 2026 to 12 Apr 2026 (−8 months)
  • 21 Nov 2025 register
    Connection date moved from 12 Apr 2026 to 4 Dec 2026 (+8 months)
  • 30 May 2025 register
    Customer changed from WEAVER POWER LIMITED to Eccles Energy Centre Limited
  • 30 May 2025 register
    Connection point changed from Eccles 132/33kV to Eccles 400kV Substation
  • 29 Oct 2024 register
    Connection point changed from Eccles 400/132/33kV to Eccles 132/33kV
  • 27 Sep 2024 register
    Connection point changed from Eccles 400kV Substation to Eccles 400/132/33kV
  • 29 Aug 2023 register
    Technology changed from Reactive compensation to Storage
  • 30 May 2023 register
    Capacity changed from 200 MW to 500 MW
  • 30 May 2023 register
    Connection date moved from 31 Aug 2026 to 12 Apr 2026 (−5 months)
  • 23 Dec 2022 register
    Substation name updated in the register (from Eccles 400kV to Eccles 400kV Substation)
  • 23 Dec 2022 register
    Technology changed from Storage, Reactive compensation to Reactive compensation
  • 30 Sep 2022 register
    Capacity changed from 0 MW to 200 MW
  • 30 Sep 2022 register
    Connection date moved from 12 Apr 2026 to 31 Aug 2026 (+5 months)
  • 30 Sep 2022 register
    Technology changed from Reactive compensation to Storage, Reactive compensation
  • 30 Mar 2022 register
    Renamed from Eccles 400kV Substation
  • 30 Nov 2021 register
    Added to the register

Also at Eccles 400kV Substation

Substation view

1 other project, 900 MW still to connect at this substation in total.

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