OEM and private-label battery storage enclosures.

A custom BESS (Battery Energy Storage System) enclosure is a purpose-engineered structure designed to house a specific battery system configuration. The enclosure can be configured around the integrator’s rack layout, inverter placement, thermal-management approach, 1, 2 or 3-hour construction, and project design basis. AEL manufactures custom BESS enclosures in Santa Rosa, California and designs and builds them to UL 1487 and NFPA 855 standards, coordinating IFC and local criteria by project.

Yes. AEL partners with battery integrators, system builders, and EPC firms who need custom enclosures for their battery systems. We provide the enclosure engineering, fabrication, and safety systems — you provide the battery system, controls, and customer relationship. White-label capability is available for integrators who sell under their own brand.

To provide an accurate quote, AEL needs battery-rack dimensions and weights, rack quantity, inverter or PCS specifications, BMS integration requirements, thermal-management approach, the required 1, 2 or 3-hour construction, site jurisdiction, access constraints, and project schedule. Share the available equipment schedule for a preliminary layout and quote.

Yes. Our vertically integrated manufacturing facility supports both one-off custom builds and repeat production runs. For integrators with standardized battery configurations, we can establish a repeatable design that reduces engineering time on subsequent orders. Lead times for repeat configurations are typically shorter than first-article builds.

AEL battery enclosures are not UL listed. They are designed and built to UL 1487 and NFPA 855 standards, with IFC, OSHA, and local requirements addressed in the project design basis. Every build uses UL or ETL (Intertek) listed components, and control panels built to UL 508A are available as specified. AEL provides documentation to support the integrator’s permitting and AHJ review process.

Container conversions begin with an existing cargo envelope, while a purpose-built enclosure can coordinate structure, insulation, ventilation, access, 1, 2 or 3-hour construction, and equipment interfaces around the selected battery system. AEL documents the project-specific design basis for integrator and AHJ review.