Berkswell Battery Energy Storage System: civil design and safety notes for engineers
Reviewed by Tom Sullivan
First reported on New Civil Engineer
30 Second Briefing
Construction has started on the Berkswell Battery Energy Storage System (BESS) in the West Midlands, with Farrans delivering the scheme for client BW ESS. The grid‑scale facility will use containerised lithium‑ion battery units and associated high‑voltage switchgear to provide rapid‑response storage and frequency support to the local transmission network. Key civil works will centre on heavy-duty foundations, cable routing and fire‑segregated compound layouts, with interfaces to National Grid connection assets driving programme and design constraints.
Technical Brief
- Site establishment phase will dictate traffic management, exclusion zones and segregation between heavy plant and HV works.
- Construction sequencing must accommodate live or future National Grid assets, with strict permit-to-work and isolation regimes.
- Lithium-ion technology drives enhanced fire safety design: compartmentalised compounds, access routes and emergency response planning.
- Earthing and bonding layouts around containers and switchgear will be central to touch/step voltage risk control.
- Temporary works for foundations and cable trenches require CDM-compliant design checks and independent safety review.
- Contractor will need battery supplier and DNO/National Grid safety interface procedures aligned before energisation and commissioning.
- Experience from Berkswell is likely to inform standardised UK BESS construction and fire-safety protocols on future schemes.
Our Take
Farrans’ role on the Berkswell BESS follows a run of transport and airport infrastructure work at London Stansted and Bristol Airport, signalling that the contractor is now also positioning itself in grid‑scale energy storage alongside major civils packages.
In our infrastructure coverage, Farrans most often appears on complex, live‑environment projects (airports, onshore wind), which suggests the Berkswell Battery Energy Storage System in the West Midlands is likely to benefit from established construction phasing and safety controls for constrained, high‑risk sites.
Battery energy storage schemes like Berkswell are increasingly being procured in the same contractor pool as onshore wind balance‑of‑plant work—RWE’s Camster II wind farm, where Farrans also featured, is a recent example—so experience on one asset class is starting to translate directly into competitive advantage on the other.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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