A Buyer’s Guide to Battery Energy Storage System Projects


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The Role of BESS in Sustainable Energy

The role of Battery Energy Storage Systems (BESS) in the UK’s low-carbon electricity transition has never been more crucial. As the UK government pushes towards fully decarbonising the power sector by 2035, BESS technology is rapidly being deployed to underpin grid stability and maximise renewable generation. Behind the scenes, these advanced energy storage solutions help keep the lights on, balancing inevitable fluctuations in supply and demand as more wind and solar power flow onto the grid.

With BESS now central to the UK’s clean energy ambitions, the performance and reliability of every component matter. Each enclosure, cable, and connection must support long-term safety and efficiency, helping installers and operators build energy storage infrastructure that meets rigorous industry standards.

Selecting the right components is critical, whether you are designing battery management systems (BMS), installing power connections, or ensuring operational safety. Our portfolio brings together trusted brands including Panduit, Iboco, SES-Sterling, Federal Mogul, TE, Cembre and Klauke to help you build a dependable, high-performing BESS.

Control Panels and BMS Enclosures

Space inside any BMS enclosure is often limited. Using panel trunking, you can maximise every millimetre efficiently, improving organisation, safety, and ease of maintenance.

Use cable ties, cable clips, and mounts to keep your wiring neat and secure. Panduit’s new Nylon 612 cable ties are a top choice, as they are designed to withstand demanding BESS environments and have a 20-year-warranty.

Where cable ties are routed around sharp edges or exposed to friction, braided sleeving can offer a protective layer to maintain insulation integrity and extend service life.


Connections

Reliable electrical connections are essential across all areas of a battery storage installation. We supply a comprehensive selection of cable lugs, insulated connectors, and ferrules from Klauke, Cembre, and our expressTERM range. Whether connecting fine-gauge wires in the BMS or terminating heavy power cables, you will find certified solutions suited to each application.

For additional protection and long-term sealing, heat shrink tubing helps guard against moisture, corrosion, and mechanical stress.

Identification

Accurate cable and wire identification supports safe assembly, installation, and ongoing maintenance. With desktop and handheld printing options available, labels can be produced wherever they are required, on site or in the workshop.

For quick application and lasting durability, self-laminating wire labels are an excellent choice. Panduit's patented Turn-Tell labels are a unique solution for dense wiring visibility inside the BMS. These identification solutions help streamline inspections and reduce the risk of errors during future modifications.

Safety

High-performance installations demand confidence at every level. In the event of a short circuit or surge, Panduit cable cleats, tested to IEC 61914, are engineered to contain the significant forces generated to protect equipment and personnel. Options are available for all cable configurations, offering reliable, straightforward installation.

Klauke Orange VDE tools provide battery-powered hydraulic crimping and cutting with Tri-Insulation Barrier technology, delivering up to 1,000V protection for safer, more efficient operations in demanding BESS environments where reliability and compliance are essential.

LOTO padlocks are essential for any BESS site, ensuring that energy sources are securely isolated during maintenance and servicing to prevent accidental re-energisation and protect personnel from hazardous energy releases. By using compliant LOTO padlocks, operators can maintain a safer working environment and meet strict industry safety standards on every installation.


Confidence in Every BESS Project

Our portfolio is curated to supply a comprehensive range of trusted components for BESS installations, helping you streamline procurement, ensure compliance, and build safer, more reliable energy storage systems across the UK and beyond. For a tailored quote on your next BESS project, email us at sales@expresselectrical.co.uk to discuss your requirements and let us help you deliver with confidence.

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