Grid infrastructure βΊ Connection queue βΊ Solar
SOLAR Β· NGETMerthyr Solar and Battery
Merthyr Solar and Battery is a 110 MW solar project in planning, connecting to the National Grid (England & Wales) network at Cilfynydd 400kV Substation, with capacity due from May 2029. The connection agreement is held by Eew Renewables Ltd.
Project stageIn planning
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom May 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-002757-1
- Customer
- Eew Renewables Ltd
- Technology
- PV Array (Photo Voltaic/solar)
- Total capacity
- 110 MW
- Change in this agreement
- +110 MW
- Capacity effective from
- 12 May 2029
- Connection site
- Cilfynydd 400kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Scoping
- Connections reform gate
- Gate 1
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 Β· 1.0 GW Β· Awaiting Consents
- Penrhiwdarren FarmBattery storage Β· 500 MW Β· Scoping
- CilfynyddSolar + storage Β· 400 MW Β· Awaiting Consents
- Cilfynydd Green Energy CentreSolar + storage Β· 400 MW Β· Awaiting Consents
- Cilfynydd BESSBattery storage Β· 350 MW Β· Scoping
- Cilfynydd 2Battery storage Β· 240 MW Β· Scoping
- BESS CilfynyddBattery storage Β· 200 MW Β· Scoping
- Merthyr Solar and BatterySolar Β· 175 MW Β· Scoping
- Twyn Hywel CillfynyddOnshore wind Β· 108 MW Β· Scoping
- Cilfynydd Grid Stability ServicesOther Β· 0 MW Β· Consents Approved
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