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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

Hunterston Energy Storage Facility

HUNTERSTON GRID 1 LTD at Ayrshire Grid 400kV Substation

Connection date
17 Mar 2028 +31 months since 9 Dec
Gate
Gate 2
Status
Consents Approved
Technology
Storage
Total capacity
200 MW
Connected now
0 MW
Still to connect
200 MW
Transmission owner
SP Energy Networks (SPT)
Agreement type
Direct Connection
Region
South Scotland
Project number
PRO-001644
In the register since
October 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 Consents Approved
  • 19 Jun 2026 register
    Customer changed from HUNTERSTON GRID 2 LTD to HUNTERSTON GRID 1 LTD
  • 5 Jun 2026 register
    Connection date moved from 27 Aug 2025 to 17 Mar 2028 (+31 months)
  • 5 Jun 2026 register
    Given a Gate 2 connection offer
  • 20 Mar 2026 register
    Customer changed from ENERGYGRIDPOWER2 LTD to HUNTERSTON GRID 2 LTD
  • 29 Apr 2025 register
    Connection date moved from 12 Apr 2024 to 27 Aug 2025 (+16 months)
  • 31 May 2024 register
    Connection date moved from 16 Apr 2024 to 12 Apr 2024 (4 days earlier)
  • 26 Apr 2024 register
    Connection date moved from 16 Dec 2024 to 16 Apr 2024 (−8 months)
  • 27 Feb 2024 register
    Connection date moved from 12 Apr 2024 to 16 Dec 2024 (+8 months)
  • 23 Dec 2022 register
    Substation name updated in the register (from Ayrshire Grid 400 kV Substation to Ayrshire Grid 400kV Substation)
  • 29 Oct 2021 register
    Added to the register

Also at Ayrshire Grid 400kV Substation

Substation view

No other projects in the register at this connection point.

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