πŸ”Œ EV Partnership Switch to Octopus Energy & unlock exclusive smart EV charging rates Find out more β†’ Skip to main content

Grid infrastructure β€Ί Connection queue β€Ί Battery storage

BATTERY STORAGE Β· NGET

Catsfield

Catsfield is a 240 MW battery storage project in planning, connecting to the National Grid (England & Wales) network at Ninfield GSP, with capacity due from November 2037. The connection agreement is held by MAS 001 Limited.

Project stageIn planning
  1. Planning (current stage)
  2. Consented (not yet reached)
  3. Construction (not yet reached)
  4. OperatingFrom Nov 2037 (not yet reached)
  5. 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-004143
Customer
MAS 001 Limited
Technology
Energy Storage System
Total capacity
240 MW
Change in this agreement
+240 MW
Capacity effective from
9 November 2037
Connection site
Ninfield GSP
Transmission owner
National Grid (England & Wales)
Connection type
Embedded (connects through the local distribution network)
NESO project status
Scoping

Connection site

The marker shows the connection substation, not the project itself, with the transmission network around it.

Projects connecting near Ninfield GSP Β· Grid map

Other projects at Ninfield GSP

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