Zenobē has acquired the multi-hundred MW Branxton battery energy storage project in East Lothian, Scotland, from original developer EastCoastGridServices.

The seller is a project‑specific vehicle linked to UK developer GridCodePower, and the acquisition was completed in early April 2026, according to company records.

The Branxton BESS is located near Thorntonloch, approximately 2.5 km east of Innerwick and around 8 km south‑east of Dunbar.

The project sits within the planning authority area of East Lothian Council and close to the proposed Scottish Power Transmission 400 kV Branxton substation.

The electrical export capacity has not been formally confirmed, but transmission network data published earlier in April indicates a 750 MW allocation at the substation for May 2029.

The site covers approximately 11.6 hectares of agricultural land and is positioned close to key network infrastructure including the A1, the East Coast Main Line railway and the Torness nuclear power station.

Indicative plans include approximately 278 battery storage containers, each measuring around 19.2 m by 6 m by 3 m.

The design also includes around 278 inverter units, six medium‑voltage control buildings, two client control buildings, auxiliary transformer compounds and a 400 kV transformer and switchgear compound.

Construction is scheduled to take between 12-18 months, with a likely operational date in 2029.

The battery system has been designed to provide rapid‑response services to grid operators, including frequency regulation, voltage support and system balancing.

The project is also intended to support black‑start capability and system restoration during grid outages.

Zenobē declined to comment while GridCodePower was also approached for comment.