Utility-Scale BESS Containers: Custom Design, Manufacturing & EPC Services

TLS designs and manufactures containerised BESS solutions for utility-scale, commercial and industrial, and renewable-energy projects. Choose a configurable enclosure, a semi-integrated platform, or a turnkey system engineered around your required capacity, cooling method, safety architecture, and grid-integration scope.

 

Choose the Right BESS Integration Level: 

1. Container Enclosure with Battery Racks

A configurable starting point for developers and EPC contractors who want to integrate their own battery packs, PCS, EMS, cooling, and fire-protection systems.

2. Semi-Integrated BESS Container

A ready-to-configure platform with battery racks and selected auxiliary systems, including cooling, fire protection, lighting, and earthing. It reduces integration work while preserving flexibility in key component choices.

3. Fully Integrated BESS Container

A turnkey containerized energy-storage solution with battery packs, BMS, DC integration, thermal management, fire detection and suppression, and auxiliary electrical systems. Designed for projects that need a defined scope from manufacturing through commissioning.

4. EPC Support for BESS Projects

TLS Energy supports container design and manufacturing, AC-side integration, on-site installation, commissioning, testing, training, and after-sales service.

 

Designed for Grid and Commercial Energy Storage:

  1. Improve renewable-energy integration and peak-load management.
  2. Support energy shifting, power smoothing, and grid-frequency response.
  3. Configure the system around the required power, energy capacity, site conditions, and operating profile.

BESS specifications

Basic specifications:
  • Battery cell: LFP 280Ah~600Ah
  • Energy capacity: 3.727MWh~6.017MWh per 20ft ISO container
  • Working ratio: 0.25C ~ 1C
  • Rated voltage: 1331 V DC (1040 V~ 1500 V range)
  • Communication protocol: CAN, Modbus TCP/IP, RS485
  • Operating temperature: -30℃…+55 ℃
  • Storage temperature: -35℃…+60 ℃
  • Cooling method: Liquid cooling / air cooling (according to requirement)
  • Max. corrosion  level: C5
  • Overall container IP level: IP55
  • Operating altitude: ≤4000m 
  • Product weight: ~38 tons
  • Dimension (W*D*H): 6058mm*2438mm*2896mm (customised)

Main properties:
​1. Lower LCOS & Higher Energy Density
  • Maximise ROI: industry-leading Levelised Cost of Storage thanks to high-capacity LFP cells.
  • Compact footprint: hand-in-hand / back-to-back layout delivers more kWh per square metre.
  • Long-term value: < 4 % cell degradation in year one and a 20-year design life keep replacement costs down.
 
2. Multi-Layer Safety Architecture
  • Zero incident record across all ESS deployments worldwide.
  • Built for extremes: reliable operation from -40 °C deserts to +55 °C tropics.
  • All-level protection: cell → module → rack → container, with redundant sensors and real-time early-warning.
  • Stage-specific fire strategy: aerosol suppression, NOVEC™ gas, and water-mist options tailored to each fire phase.
3. Plug-and-Play O&M Efficiency
  • Factory-installed DC bus inside a 20-ft ISO cabinet—no site wiring headaches.
  • SOC accuracy ± 3 % via advanced algorithms.
  • One-click commissioning slashes on-site labour hours.
  • PCS-agnostic: fully compatible with leading global PCS brands and future augmentation plans.
  • AI cloud platform gives condition-based maintenance and predictive analytics.

4. Electrical & Thermal Safety by Design
  • Generous creepage & clearance distances exceed IEC and UL requirements.
  • Total thermal isolation prevents heat spread between packs.
  • NP pack tech: no fire, no propagation, no explosion—even during nail-penetration or thermal-runaway events.
 
5. High Serviceability & Integration
  • Integrated MSD + fast-plug connectors enable swift module swap-outs.
  • Dense yet accessible: reserved maintenance passages and lift-out panels speed routine inspections.
 
6. Rugged IP Rating & Airtight Assurance
  • IP55+ enclosure guards against dust, salt-spray and torrential rain.
  • 100 % helium-leak test before roll-out guarantees airtight integrity for every module.
BESS container, DC part, tls energy, enclosure

Typical BESS container / enclosure

Ready to Decarbonise & Digitise Your Grid

Whether you need a bare-frame BESS enclosure /rack, a semi-integrated solution or a fully wired, grid-ready BESS unit, TLS Energy delivers the expertise — from design to EPC hand-over — to make your energy storage project profitable, fast and safe.

Please download Energy Storage System (ESS) Containers brochure for reference.