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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

Middleton BESS

Middleton Energy Storage Limited at Middleton 400KV Substation

Connection date
31 May 2029 +30 months since 9 Dec
Gate
Gate 2
Status
Under Construction/Commissioning
Technology
Storage
Total capacity
200 MW
Connected now
0 MW
Still to connect
200 MW
Transmission owner
National Grid Electricity Transmission (NGET)
Agreement type
Direct Connection
Region
England and Wales
Project number
PRO-002305
In the register since
July 2022

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.

  • 1 Oct 2026 register
    Connection date moved from 30 Nov 2026 to 31 May 2029 (+30 months)
  • 1 Oct 2026 register
    Status changed from Scoping to Under Construction/Commissioning
  • 1 Oct 2026 register
    Given a Gate 2 connection offer
  • 23 Dec 2022 register
    Customer changed from KONA ASSET 1 LIMITED to Middleton Energy Storage Limited
  • 23 Dec 2022 register
    Substation name updated in the register (from Middleton 400KV to Middleton 400KV Substation)
  • 29 Jul 2022 register
    Added to the register

Also at Middleton 400KV Substation

Substation view

2 other projects, 840 MW still to connect at this substation in total. 400 MW is due to connect here before this project’s connection date of 31 May 2029.

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