Hurlet Battery

Hurlet Battery is a 400 MW battery storage project in planning, connecting to the SP Transmission (south Scotland) network at Neilston 400kV Substation, with capacity due from October 2033. The connection agreement is held by P-Frequency Ltd.

Project stageIn planning

Planning (current stage)
Consented (not yet reached)
Construction (not yet reached)
OperatingFrom Oct 2033 (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-004790
Customer: P-Frequency Ltd
Technology: Energy Storage System
Total capacity: 400 MW
Change in this agreement: +400 MW
Capacity effective from: 31 October 2033
Connection site: Neilston 400kV Substation
Transmission owner: SP Transmission (south Scotland)
Connection type: Direct connection to the transmission network
NESO project status: Scoping
Connections reform gate: Gate 1

Connection site

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

Projects connecting near Neilston · Grid map

Other projects at Neilston 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