Outdoor battery cabinets, container-style housings and PCS/inverter enclosures for utility-scale, C&I and data center energy storage — fabricated to your integrator's print with the thermal, venting and access provisions the battery system requires.
Battery energy storage is being deployed at substations, behind data center campuses, at solar interconnections and on industrial sites, and every installation needs a housing: a rack-style outdoor cabinet, a walk-in or container-style enclosure, a PCS or inverter enclosure, a DC combiner or auxiliary cabinet. Integrators design the system; a fabricator has to build the housing to that design, at volume, on the project schedule.
FabTek fabricates BESS enclosures and battery cabinets to the integrator's or OEM's print at our Hazlehurst, Mississippi plants. Welded and bolted steel or aluminum structures, formed panels, doors with three-point latching, ventilation and HVAC cutouts, cable and busbar entries, deflagration-vent and fire-suppression provisions where the drawing calls for them, and in-house powder coat. We build the enclosure and associated metalwork; the battery modules, BMS, thermal system and listings (UL 9540/9540A, NFPA 855) remain with the integrator.
NEMA 3R/4 rack-style cabinets for battery modules, single- and multi-door, with HVAC mounting and rack provisions to print.
Larger enclosures with interior racking supports, floor systems and partitioning for modules, PCS and auxiliaries.
Enclosures for power conversion systems, DC combiners, auxiliary power and controls, with the ventilation the electronics need.
Module racks, rack bases, seismic bracing and equipment stands for the BESS pad.
Utility and IPP energy storage at substations and solar sites; behind-the-meter storage at data centers and industrial plants; microgrids and resiliency projects for public power and military installations. Our guide to generator and BESS enclosures for data centers covers the data center case.
| Materials | Carbon steel (galvanneal or painted), aluminum 5052, stainless 304/316 for coastal and washdown |
|---|---|
| Ratings | NEMA 3R, 4 or 4X enclosure construction as specified; listing remains with the integrator |
| Thermal & venting | HVAC cutouts and mounting, filtered louvers, deflagration vent frames and fire-suppression penetrations per print |
| Electrical entries | Busbar and cable entries, gland plates, grounding provisions |
| Structure | Welded or bolted frames; seismic anchorage details per project |
| Finish | In-house powder coat; IEEE 2000-hour salt-spray rated; duplex galvanized-plus-powder coat on request |
| Welding | AWS D1.1 / D1.3 / D1.6 as applicable |
| Documentation | MTRs, weld records, first-article inspection reports for repeat programs |
| Also specified as | BESS enclosure, battery cabinet, battery energy storage enclosure, energy storage cabinet, PCS enclosure, inverter enclosure, outdoor battery housing |
Representative capabilities — exact ranges, ratings, and finishes are confirmed per project. Send drawings for a firm quote.
BESS programs are repeat builds — the same cabinet dozens or hundreds of times across sites. We run a first-article build against the integrator's drawing and inspection plan, lock the fixtures and the revision, and then release production against a forecast on a dedicated line. That's how we run transformer cabinets at hundreds a month, and it transfers directly.
Built at four production sites in Hazlehurst, Mississippi.
ISO 9001:2015 quality management, AWS-certified welding, OSHA-compliant facilities.
In-house powder coat backed by an IEEE 2000-hour salt-spray certification.
Reserved-line capacity and the automation to grow with your volume.
Yes — outdoor battery cabinets, walk-in and container-style enclosures, PCS and auxiliary enclosures and battery racks, fabricated to the integrator's drawings and powder-coated in-house in Hazlehurst, Mississippi.
FabTek fabricates BESS enclosures and cabinets as a contract fabricator, running first-article-then-volume programs with sequenced delivery for utility, C&I and data center storage projects.
Those apply to the complete energy storage system and stay with the integrator. We fabricate the enclosure to the design that carries the listing, including the venting and suppression provisions it specifies.
Yes — the cabinet, battery racks, PCS stands and pad steel can ship as one package.
Explore related lines: Generator enclosures · Switchgear enclosures · Equipment skids & platforms · Substation equipment stands
Further reading: Generator & BESS enclosures for data centers · NEMA 3R vs. 4 vs. 4X · PDU, UPS & battery cabinets
Send the enclosure drawing set and the site count — we'll quote a first article and a production release schedule.