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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

Thurrock Power Station

THURROCK FLEXIBLE GENERATION LIMITED at Tilbury 275kV Substation

Connection date
Increase at an existing station: +375 MW from 30 Jun 2026 +8 months since 9 Dec
Gate
Gate 2
Status
Built
Planning consent
Granted 16 Feb 2022
Thurrock Flexible Generation Plant (EN010092) · Source: Planning Inspectorate
Technology
Storage + Gas engines
Total capacity
750 MW
Connected now
375 MW
Still to connect
375 MW
Transmission owner
National Grid Electricity Transmission (NGET)
Agreement type
Direct Connection
Region
England and Wales
Project number
PRO-000494
In the register since
January 2021 or earlier

Stages

StageConnected MWAdds MWCumulative MWDateGateStatus
13000300NoneNot statedBuilt
27537575030 Jun 2026Gate 2Built

Change history

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

  • 10 Oct 2026 register
    Stage 2: Status changed from Under Construction/Commissioning to Built
  • 5 Oct 2026 register
    Stage 2: Given a Gate 2 connection offer
  • 25 Aug 2026 register
    Stage 2: 75 MW now connected
  • 28 Apr 2026 register
    Stage 1: Connection date removed (was 30 Jun 2025)
  • 28 Apr 2026 register
    Stage 1: Status changed from Under Construction/Commissioning to Built
  • 28 Apr 2026 register
    Stage 2: Connection date moved from 31 Oct 2025 to 30 Jun 2026 (+8 months)
  • 20 Mar 2026 register
    Stage 1: 300 MW now connected
  • 28 Nov 2025 register
    Restructured from 1 stage (450 MW from 31 Oct 2029) to 1 stage (450 MW from 31 Oct 2025). First connection date −48 months
  • 21 Nov 2025 register
    Restructured from 1 stage (450 MW from 31 Oct 2025) to 1 stage (450 MW from 31 Oct 2029). First connection date +48 months
  • 27 Jun 2025 register
    Stage 1: Connection date moved from 28 Nov 2024 to 30 Jun 2025 (+7 months)
  • 28 Feb 2025 register
    Restructured from 1 stage (750 MW from 28 Nov 2024) to 2 stages (300 MW from 28 Nov 2024, 450 MW from 31 Oct 2025)
  • 26 Nov 2024 register
    Connection date moved from 31 Oct 2024 to 28 Nov 2024 (+1 month)
  • 27 Aug 2024 register
    Customer changed from THURROCK POWER LIMITED to THURROCK FLEXIBLE GENERATION LIMITED
  • 28 Jul 2023 register
    Restructured from 2 stages (300 MW from 31 Oct 2024, 450 MW from 31 Oct 2024) to 1 stage (750 MW from 31 Oct 2024)
  • 30 Jun 2023 register
    Stage 1: Connection date moved from 31 Oct 2025 to 31 Oct 2024 (−12 months)
  • 30 Jun 2023 register
    Stage 2: Connection date moved from 31 Oct 2026 to 31 Oct 2024 (−24 months)
  • 30 May 2023 register
    Stage 1: Connection date moved from 1 Oct 2023 to 31 Oct 2025 (+25 months)
  • 30 May 2023 register
    Stage 2: Connection date moved from 1 May 2024 to 31 Oct 2026 (+30 months)
  • 23 Dec 2022 register
    Substation name updated in the register (from Tilbury 275kV to Tilbury 275kV Substation)
  • 30 Mar 2021 register
    Renamed from Thurrock
  • 26 Feb 2021 register
    Stage 1: Connection date moved from 10 Jan 2023 to 1 Oct 2023 (+9 months)
  • 26 Feb 2021 register
    Stage 2: Connection date moved from 5 Jan 2024 to 1 May 2024 (+4 months)

Also at Tilbury 275kV 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

Planning consent

The planning decision for this project, from the Planning Inspectorate. NESO’s status can lag behind planning decisions, so the two may differ.

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