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Grid infrastructure › Connection queue › Solar + storage

SOLAR + STORAGE · NGET

Cilfynydd Green Energy Centre

Cilfynydd Green Energy Centre is a 400 MW solar + storage project in planning, connecting to the National Grid (England & Wales) network at Cilfynydd 400kV Substation, with capacity due from October 2029. The connection agreement is held by Cilfynydd Ng Limited.

Project stageIn planning
  1. Planning (current stage)
  2. Consented (not yet reached)
  3. Construction (not yet reached)
  4. OperatingFrom Oct 2029 (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-001663-1
Customer
Cilfynydd Ng Limited
Technology
Demand, Energy Storage System, PV Array (Photo Voltaic/solar), Wind Onshore
Total capacity
400 MW
Change in this agreement
+400 MW
Capacity effective from
30 October 2029
Connection site
Cilfynydd 400kV Substation
Transmission owner
National Grid (England & Wales)
Connection type
Direct connection to the transmission network
NESO project status
Awaiting Consents
Connections reform gate
Gate 1

Connection site

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

Projects connecting near Cilfynydd · 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