Wylfa Substation

Wylfa Substation is a 120 MW solar + storage project in planning, connecting to the National Grid (England & Wales) network at Wylfa 132kV Substation, with capacity due from June 2029. The connection agreement is held by Wylfa Green Limited.

Project stageIn planning

Planning (current stage)
Consented (not yet reached)
Construction (not yet reached)
OperatingFrom Jun 2029 (not yet reached)
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-000506
Customer: Wylfa Green Limited
Technology: Energy Storage System, PV Array (Photo Voltaic/solar)
Total capacity: 120 MW
Change in this agreement: +120 MW
Capacity effective from: 30 June 2029
Connection site: Wylfa 132kV 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 Wylfa · Grid map

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