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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 / England and Wales

Iron Acton

IRON ACTON GREEN LIMITED at 132kV bay at Iron Acton Substation

Connection date
30 Sep 2026
Gate
Gate 2
Status
Consents Approved
Technology
Storage + Solar
Total capacity
120 MW
Connected now
99.4 MW
Still to connect
20.6 MW
Transmission owner
National Grid Electricity Transmission (NGET)
Agreement type
Direct Connection
Region
England and Wales
Project number
PRO-000491
In the register since
January 2021 or earlier

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?

Stages

StageConnected MWAdds MWCumulative MWDateGateStatus
199.4099.4NoneNot statedBuilt
2020.612030 Sep 2026Gate 2Consents Approved

Change history

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

  • 5 Oct 2026 register
    Stage 2: Status changed from Under Construction/Commissioning to Consents Approved
  • 5 Oct 2026 register
    Stage 2: Given a Gate 2 connection offer
  • 7 Aug 2026 register
    Stage 2: Status changed from Scoping to Under Construction/Commissioning
  • 29 Aug 2025 register
    Connection point changed from Iron Acton - (South West) GSP to 132kV bay at Iron Acton Substation
  • 27 Jun 2025 register
    Connection point changed from Iron Acton 275kV Substation to Iron Acton - (South West) GSP
  • 27 Jun 2025 register
    Connection date moved from 30 Sep 2027 to 30 Sep 2026 (−12 months)
  • 27 Jun 2025 register
    Connected MW moved between stages in the register (99.4 MW connected, unchanged)
  • 27 Jun 2025 register
    Stage removed (49.5 MW connected)
  • 29 Apr 2025 register
    Stage 2: 49.5 MW now connected
  • 29 Apr 2025 register
    Stage 2: Status changed from Scoping to Built
  • 31 Oct 2023 register
    Stage 2: Capacity changed from 49.9 MW to 49.5 MW
  • 31 Oct 2023 register
    Stage 2: Connection date moved from 31 Jul 2023 to 30 Sep 2024 (+14 months)
  • 31 Oct 2023 register
    Stage 3: Capacity changed from 20.2 MW to 20.6 MW
  • 31 Oct 2023 register
    Stage 3: Connection date moved from 31 Oct 2023 to 30 Sep 2027 (+47 months)
  • 29 Sep 2023 register
    Stage 1: 49.9 MW now connected
  • 29 Aug 2023 register
    Stage 1: Connection date removed (was 31 Jul 2022)
  • 29 Aug 2023 register
    Stage 1: Status changed from Scoping to Built
  • 29 Aug 2023 register
    Stage 1: Technology changed from Hybrid to Storage, Solar
  • 29 Aug 2023 register
    Stage 2: Technology changed from Hybrid to Storage, Solar
  • 29 Aug 2023 register
    Stage 3: Technology changed from Hybrid to Storage, Solar
  • 28 Jul 2023 register
    Substation name updated in the register (from Iron Acton GSP to Iron Acton 275kV Substation)
  • 30 May 2023 register
    Stage 1: Technology changed from Storage, Solar to Hybrid
  • 30 May 2023 register
    Stage 2: Technology changed from Storage, Solar to Hybrid
  • 30 May 2023 register
    Stage 3: Technology changed from Storage, Solar to Hybrid
  • 23 Dec 2022 register
    Substation name updated in the register (from Iron Acton to Iron Acton GSP)
  • 25 Feb 2022 register
    Restructured from 1 stage (120 MW from 30 Nov 2021) to 3 stages (49.9 MW from 31 Jul 2022, 49.9 MW from 31 Jul 2023, 20.2 MW from 31 Oct 2023). First connection date +8 months

Also at 132kV bay at Iron Acton 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