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Grid infrastructure β€Ί Connection queue β€Ί Onshore wind

ONSHORE WIND Β· NGET

Twyn Hywel Cillfynydd

Twyn Hywel Cillfynydd is a 108 MW onshore wind project in planning, connecting to the National Grid (England & Wales) network at Cilfynydd 400kV Substation, with capacity due from April 2027. The connection agreement is held by Twyn Hywel Energy Park Ltd.

Project stageIn planning
  1. Planning (current stage)
  2. Consented (not yet reached)
  3. Construction (not yet reached)
  4. OperatingFrom Apr 2027 (not yet reached)
  5. Closed (not yet reached)

Scoping and awaiting consents are both shown as planning. A connection agreement does not mean the project will be built: many queue projects never reach construction.

Connection details

NESO project number
PRO-001497
Customer
Twyn Hywel Energy Park Ltd
Technology
Wind Onshore
Total capacity
108 MW
Change in this agreement
+108 MW
Capacity effective from
1 April 2027
Connection site
Cilfynydd 400kV Substation
Transmission owner
National Grid (England & Wales)
Connection type
Direct connection to the transmission network
NESO project status
Scoping

Connection site

The marker shows the connection substation, not the project itself, with the transmission network around it.

Projects connecting near Cilfynydd Β· Grid map

Other projects at Cilfynydd 400kV Substation

Source: NESO Transmission Entry Capacity (TEC) register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem