Grid infrastructure › Connection queue › Battery storage
BATTERY STORAGE · SPTAGS Harestonhill BESS
AGS Harestonhill BESS is a 500 MW battery storage project in planning, connecting to the SP Transmission (south Scotland) network at AGS Harestonhill BESS 400kV Substation, with capacity due from October 2030. The connection agreement is held by AGS Harestonhill Ltd.
Project stageIn planning
- Planning (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingFrom Oct 2030 (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-003656
- Customer
- AGS Harestonhill Ltd
- Technology
- Energy Storage System
- Total capacity
- 500 MW
- Change in this agreement
- +500 MW
- Capacity effective from
- 31 October 2030
- Connection site
- AGS Harestonhill BESS 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 connection site could not be placed on the map.
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