Grid infrastructure βΊ Connection queue βΊ Other
OTHER Β· NGETPort of Mostyn
Port of Mostyn is a 140 MW other project in planning, connecting to the National Grid (England & Wales) network at Connah's Quay 400kV Substation, with capacity due from June 2031. The connection agreement is held by Mostyn Seapower Limited.
Project stageIn planning
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Jun 2031 (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-000421-2
- Customer
- Mostyn Seapower Limited
- Technology
- Tidal
- Total capacity
- 140 MW
- Change in this agreement
- +70 MW
- Capacity effective from
- 1 June 2031
- Connection site
- Connah's Quay 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 connection site could not be placed on the map.
Other projects at Connah's Quay 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