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BATTERY STORAGE · NGETMiddleton BESS
Middleton BESS is a 200 MW battery storage project under construction or commissioning, connecting to the National Grid (England & Wales) network at Middleton 400KV Substation, with capacity due from May 2029. The connection agreement is held by Middleton Energy Storage Limited.
Project stageUnder construction
- Planning (completed)
- Consented (completed)
- Construction (current stage)
- OperatingFrom May 2029 (not yet reached)
- Closed (not yet reached)
Connection details
- NESO project number
- PRO-002305
- Customer
- Middleton Energy Storage Limited
- Technology
- Energy Storage System
- Total capacity
- 200 MW
- Change in this agreement
- +200 MW
- Capacity effective from
- 31 May 2029
- Connection site
- Middleton 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 Middleton 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