Grid infrastructure › Connection queue › Battery storage
BATTERY STORAGE · NGETCellarhead 400kV Energy Storage
Cellarhead 400kV Energy Storage is a 300 MW battery storage project under construction or commissioning, connecting to the National Grid (England & Wales) network at Cellarhead 400kV Substation, with capacity due from September 2028. The connection agreement is held by C & S Energy Limited.
Project stageUnder construction
- Planning (completed)
- Consented (completed)
- Construction (current stage)
- OperatingFrom Sep 2028 (not yet reached)
- Closed (not yet reached)
Connection details
- NESO project number
- PRO-001685
- Customer
- C & S Energy Limited
- Technology
- Energy Storage System
- Total capacity
- 300 MW
- Change in this agreement
- +300 MW
- Capacity effective from
- 13 September 2028
- Connection site
- Cellarhead 400kV Substation
- Transmission owner
- National Grid (England & Wales)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Under Construction/Commissioning
- Connections reform gate
- Gate 2
Connection site
The marker shows the connection substation, not the project itself, with the transmission network around it.
Other projects at Cellarhead 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