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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 / Substation

Melksham 400kV Substation

England and Wales, National Grid Electricity Transmission

6projects in the register
1.9 GWstill to connect
0 MWof that with Gate 2 offers
0 MWconnected now

The queue at this substation

ProjectCustomerTechnologyQueued MWConnection dateGateStatus
Melksham (Tertiary)MELKSHAM CALNE GREEN LIMITEDStorage with solar or wind5726 Jun 2026 Past dateNot statedScoping
JBM Solar 13 - MelkshamJBM SOLAR PROJECTS 13 LIMITEDStorage with solar or wind49.917 Jul 2026 Past dateNot statedScoping
MelkshamLIME DOWN SOLAR PARK LIMITEDStorage with solar or wind50031 Jul 2030Not statedAwaiting Consents
South BrookJBM Solar LimitedStorage with solar or wind35.528 Jun 2037Not statedAwaiting Consents
Melksham BESS & PVELEMENTS GREEN LIMITEDStorage with solar or wind80015 Oct 2037Not statedScoping
Melkshem (Cartridge Farm)Queequeg Renewables LtdStorage48031 Oct 2037Not statedAwaiting Consents

Left the register since January 2021: Melksham Grid Park ESS & PV (90 MW), Melksham 1 Tertiary (49.9 MW), Melksham 2 Tertiary (49.9 MW), Middel Energy Park (100 MW).

Recent changes

  • Melksham Grid Park ESS & PVEngland and Wales, Storage with solar or windLeft the register (90 MW from 31 Oct 2037)90 MW
  • MelkshamEngland and Wales, Storage with solar or windStatus changed from Scoping to Awaiting Consents
  • Melksham (Tertiary)England and Wales, Storage with solar or windConnection date moved from 31 Oct 2025 to 26 Jun 2026 (+8 months)+8 mo
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windTechnology changed from Thermal to Storage, Solar
  • MelkshamEngland and Wales, Storage with solar or windConnection date moved from 31 Jul 2029 to 31 Jul 2030 (+12 months)+12 mo
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windCapacity changed from 50 MW to 49.9 MW
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windConnection date moved from 14 Nov 2025 to 17 Jul 2026 (+8 months)+8 mo
  • South BrookEngland and Wales, Storage with solar or windCustomer changed from DALIA HOLDINGS LTD to JBM SOLAR LIMITED
  • Melksham (Tertiary)England and Wales, Storage with solar or windRestructured from 2 stages (49.9 MW from 30 Oct 2022, 7.1 MW from 31 Oct 2023) to 1 stage (57 MW from 31 Oct 2025). First connection date +36 months+36 mo
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windConnection date moved from 30 Jun 2026 to 14 Nov 2025 (−8 months)−8 mo
  • MelkshamEngland and Wales, Storage with solar or windCustomer changed from IGP SOLAR 15 LIMITED to LIME DOWN SOLAR PARK LIMITED
  • Melksham Grid Park ESS & PVEngland and Wales, Storage with solar or windAdded to the registerNew
  • Middel Energy ParkEngland and Wales, Storage with solar or windLeft the register (100 MW from 30 Sep 2029)100 MW
  • Melkshem (Cartridge Farm)England and Wales, StorageAdded to the registerNew
  • Melksham BESS & PVEngland and Wales, Storage with solar or windAdded to the registerNew
  • South BrookEngland and Wales, Storage with solar or windCustomer changed from JBM SOLAR PROJECTS (UK) LTD to DALIA HOLDINGS LTD
  • Middel Energy ParkEngland and Wales, Storage with solar or windAdded to the registerNew
  • South BrookEngland and Wales, Storage with solar or windAdded to the registerNew
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windSubstation name updated in the register (from Melksham 400kV to Melksham 400kV Substation)
  • MelkshamEngland and Wales, Storage with solar or windSubstation name updated in the register (from Melksham 400kV to Melksham 400kV Substation)
  • Melksham (Tertiary)England and Wales, Storage with solar or windSubstation name updated in the register (from Melksham 400kV to Melksham 400kV Substation)
  • Melksham (Tertiary)England and Wales, Storage with solar or windStage 1: Connection date moved from 31 Oct 2022 to 30 Oct 2022 (1 day earlier)
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windConnection date moved from 30 Oct 2024 to 30 Jun 2026 (+20 months)+20 mo
  • JBM Solar 13 - MelkshamEngland and Wales, Storage with solar or windAdded to the registerNew
  • MelkshamEngland and Wales, Storage with solar or windAdded to the registerNew
  • Melksham 1 TertiaryEngland and Wales, StorageLeft the register (49.9 MW from 30 Apr 2024)49.9 MW
  • Melksham 2 TertiaryEngland and Wales, StorageLeft the register (49.9 MW from 30 Apr 2024)49.9 MW
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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