Grid infrastructure › Connection queue › Battery storage
BATTERY STORAGE · NGETSAE Usk 1
SAE Usk 1 is a 349 MW battery storage project in planning, connecting to the National Grid (England & Wales) network at South Wales East Node A 275kV Substation, with capacity due from October 2037. The connection agreement is held by Afon Wysg Energy Limited.
Project stageIn planning
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Oct 2037 (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-003590
- Customer
- Afon Wysg Energy Limited
- Technology
- Energy Storage System
- Total capacity
- 349 MW
- Change in this agreement
- +349 MW
- Capacity effective from
- 31 October 2037
- Connection site
- South Wales East Node A 275kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Scoping
Connection site
The connection site could not be placed on the map.
Other projects at South Wales East Node A 275kV 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