Grid infrastructure › Connection queue › Battery storage
BATTERY STORAGE · SPTBranxton Energy Storage Facility
Branxton Energy Storage Facility is a 750 MW battery storage project in planning, connecting to the SP Transmission (south Scotland) network at Branxton 400kV Substation, with capacity due from May 2029. The connection agreement is held by EastCoastGridServices Ltd.
- 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-002076
- Customer
- EastCoastGridServices Ltd
- Technology
- Energy Storage System
- Total capacity
- 750 MW
- Change in this agreement
- +750 MW
- Capacity effective from
- 13 May 2029
- Connection site
- Branxton 400kV Substation
- Transmission owner
- SP Transmission (south Scotland)
- 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.
Other projects at Branxton 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