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BATTERY STORAGE · SPTKilmarnock BESS
Kilmarnock BESS is a 350 MW battery storage project under construction or commissioning, connecting to the SP Transmission (south Scotland) network at Boydston 400kV substation, with capacity due from November 2026. The connection agreement is held by Kilmarnock Flexpower Ltd.
Project stageUnder construction
- Planning (completed)
- Consented (completed)
- Construction (current stage)
- OperatingFrom Nov 2026 (not yet reached)
- Closed (not yet reached)
Connection details
- NESO project number
- PRO-001836
- Customer
- Kilmarnock Flexpower Ltd
- Technology
- Energy Storage System
- Total capacity
- 350 MW
- Change in this agreement
- +350 MW
- Capacity effective from
- 30 November 2026
- Connection site
- Boydston 400kV substation
- Transmission owner
- SP Transmission (south Scotland)
- Connection type
- Direct connection to the transmission network
- NESO project status
- Under Construction/Commissioning
- Connections reform gate
- Gate 2
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