STM 5 MWh BESS

Our fully integrated 5 MWh STM FEOC-Free BESS is designed for utility-scale performance and grid stability, all with liquid cooling, grid-forming PCS, and plug-and-play deployment in a 20 ft container.

STM 5 MWh BESS

5,015 kWh High-Voltage LiFePO4 Battery System

2,500 kW Grid-Forming PCS

FEOC-free Manufacturing
Utility-Scale Capacity with 1,500 V Architecture
Centralized Smart BMS & EMS Integration
Advanced Liquid Cooling & Fire Protection
All-In-One Containerized Design — 20 Ft Plug-And-Play Solution With Black Start Capability, Remote Access, and Intelligent Scheduling Optimization

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More Details

Check out STM 5 MWh BESS’ core specifications.

Batteries

BMS

Cooling & Safety
Protection

PCS

Dimensions

Total Weight

IP Protection

5,015 kWh LiFePO₄ battery with 1,500 V high-voltage architecture
Optimized 2 × 6 × 4 × 1 P104S configuration

Unified centralized BMS with real-time monitoring
Comprehensive protection system with EMS & SCADA

High-efficiency liquid cooling system
Integrated aerosol/clean-agent fire suppression with IP54 (container) and IP55 (PCS) protection

Supports VSG, PQ, VF modes, grid-forming, and islanding detection
Enables FCR/aFRR grid services with up to 99% efficiency and < 3% THDi

Dimensions (W × H × D): 6058 × 2438 × 2896 mm (20 ft High Cube container)

~ 44,000 kg

IP54

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Frequently Asked Questions

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What applications is the STM 5015 suitable for?

The system is ideal for utility-scale energy storage, renewable integration (solar/wind), microgrids, peak shaving, frequency regulation, and backup power applications.

Does the STM 5015 support grid-forming operation?

Yes. The 2500 kW PCS supports grid-forming, VSG, PQ, VF modes, islanding detection, and grid services including FCR and aFRR.

What safety features are included in the STM 5015?

The system includes centralized BMS protection (UV, OV, OC, UT, OT, SC), smart liquid cooling, IP54/IP55 protection ratings, and integrated fire suppression using aerosol and clean agents.

What are the environmental operating limits of the STM 5015?

The battery container operates from -20°C to 60°C (derating above 45°C), with humidity tolerance up to 85% non-condensing and installation altitude up to 3000 m (PCS up to 4000 m with customization).

Is the STM 5015 compliant with international transport and safety standards?

Yes. STM 5015 is FEOC-free and certified with UL, MSDS, UN 38.3, and UN 3536 documentation for safe operation and transport.

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