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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.

More analyses are on the way.

Transmission / Projects / England and Wales

High Marnham 400

ENSO GREEN HOLDINGS X LIMITED at High Marnham 400kV Substation

Connection date
31 Oct 2033
Gate
Not stated
Status
Awaiting Consents
Technology
Storage + Solar
Total capacity
1,000 MW
Connected now
0 MW
Still to connect
1,000 MW
Transmission owner
National Grid Electricity Transmission (NGET)
Agreement type
Direct Connection
Region
England and Wales
Project number
PRO-002194
In the register since
June 2023

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
1040040031 Oct 2033Not statedAwaiting Consents
206001,00031 Oct 2034Not statedScoping

Change history

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

  • 29 Jul 2025 register
    Customer changed from ENSO GREEN HOLDINGS LIMITED to ENSO GREEN HOLDINGS X LIMITED
  • 28 Mar 2025 register
    New stage added (600 MW from 31 Oct 2034)
  • 28 Jul 2023 register
    Connection point changed from High Marnham GSP to High Marnham 400kV Substation
  • 30 Jun 2023 register
    Added to the register

Also at High Marnham 400kV Substation

Substation view

7 other projects, 3.6 GW still to connect at this substation in total. 897 MW is due to connect here before this project’s connection date of 31 Oct 2033.

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