Grid infrastructure βΊ Connection queue βΊ Battery storage
BATTERY STORAGE Β· NGETLaleham BESS
Laleham BESS is a 200 MW battery storage project in planning, connecting to the National Grid (England & Wales) network at Slough East 132kV Substation, with capacity due from April 2038. The connection agreement is held by Acorn Power Limited.
Project stageIn planning
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Apr 2038 (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-004277
- Customer
- Acorn Power Limited
- Technology
- Energy Storage System
- Total capacity
- 200 MW
- Change in this agreement
- +200 MW
- Capacity effective from
- 30 April 2038
- Connection site
- Slough East 132kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Embedded (connects through the local distribution network)
- NESO project status
- Scoping
- Connections reform gate
- Gate 1
Connection site
The connection site could not be placed on the map.
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