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OTHER · NGETCilfynydd Grid Stability Services
Cilfynydd Grid Stability Services is a 0 MW other project consented, connecting to the National Grid (England & Wales) network at Cilfynydd 400kV Substation, with capacity due from March 2027. The connection agreement is held by Cilfynydd Grid Services Limited.
Project stageConsented
- Planning (completed)
- Consented (current stage)
- Construction (not yet reached)
- OperatingFrom Mar 2027 (not yet reached)
- Closed (not yet reached)
Connection details
- NESO project number
- PRO-002540
- Customer
- Cilfynydd Grid Services Limited
- Technology
- Reactive Compensation
- Total capacity
- 0 MW
- Capacity effective from
- 31 March 2027
- Connection site
- Cilfynydd 400kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Consents Approved
- Connections reform gate
- Gate 2
Connection site
The marker shows the connection substation, not the project itself, with the transmission network around it.
Other projects at Cilfynydd 400kV Substation
- Cilfynydd Green Energy CentreSolar + storage · 1.0 GW · Awaiting Consents
- Penrhiwdarren FarmBattery storage · 500 MW · Scoping
- CilfynyddSolar + storage · 400 MW · Awaiting Consents
- Cilfynydd Green Energy CentreSolar + storage · 400 MW · Awaiting Consents
- Cilfynydd BESSBattery storage · 350 MW · Scoping
- Cilfynydd 2Battery storage · 240 MW · Scoping
- BESS CilfynyddBattery storage · 200 MW · Scoping
- Merthyr Solar and BatterySolar · 175 MW · Scoping
- Merthyr Solar and BatterySolar · 110 MW · Scoping
- Twyn Hywel CillfynyddOnshore wind · 108 MW · Scoping
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