Grid infrastructure βΊ Connection queue βΊ Interconnector
INTERCONNECTOR Β· NGETMares
Mares is a 750 MW interconnector project in planning, connecting to the National Grid (England & Wales) network at Bodelwyddan 400kV Substation, with capacity due from June 2030. The connection agreement is held by Maresconnect Limited.
Project stageIn planning
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Jun 2030 (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-000978
- Customer
- Maresconnect Limited
- Technology
- Interconnector
- Export capacity
- 750 MW
- Import capacity
- 750 MW
- Change in this agreement
- +750 MW
- Capacity effective from
- 30 June 2030
- Connection site
- Bodelwyddan 400kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Interconnector
- NESO project status
- Awaiting Consents
Connection site
The marker shows the connection substation, not the project itself, with the transmission network around it.
Other projects at Bodelwyddan 400kV Substation
Source: NESO interconnector register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem