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Grid infrastructure › Connection queue › Battery storage

BATTERY STORAGE · NGET

Deeside Power Station

Deeside Power Station is a 190 MW battery storage project built and connected, connecting to the National Grid (England & Wales) network at Connah's Quay 400kV Substation. The connection agreement is held by Deeside Power (UK) Limited.

Project stageOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingOct 2026 (current stage)
  5. Closed (not yet reached)

Connection details

NESO project number
PRO-001062
Customer
Deeside Power (UK) Limited
Technology
Energy Storage System, Reactive Compensation
Total capacity
190 MW
Already connected
1 MW
Change in this agreement
+189 MW
Capacity effective from
25 October 2026
Connection site
Connah's Quay 400kV Substation
Transmission owner
National Grid (England & Wales)
Connection type
Direct connection to the transmission network
NESO project status
Built
Connections reform gate
Gate 2

Connection site

The connection site could not be placed on the map.

Projects connecting near Connah's Quay · Grid map

Other projects at Connah's Quay 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