STM 261 kWh BESS

Engineered with Grade A+ LiFePO₄ cells and a high-efficiency inverter, STM BESS works hand in hand with solar panels to deliver clean, reliable off-grid energy anywhere, anytime.

STM 261 kWh BESS

Liquid-Cooling PV Storage Cabinet

Power Output Capacity: 50 kW - 261 kWh

261 kWh Batteries
Seamless Switching Function
Liquid Cooling System
Optimized Energy Flow
Space for Up to 5 Mining Machines

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More Details

Check out STM 261 kWh BESS’ core specifications.

Batteries

Switching

Cooling

Energy Sources

Capacity

261 kWh Lithium Iron Phosphate (LiFePO₄) batteries
5 liquid-cooled battery packs

Seamless switching function
Up to 90 kW PV inverter input
Rated output power of up to 50 kW

High-efficiency liquid cooling system
Ensuring cell temperature difference
Maximized battery life

Seamless switching between energy sources
Optimizing energy flow
Improved system reliability

Reserved space for up to 6 Bitcoin (BTC) mining machines

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Frequently Asked Questions

Have questions about our 261 kWh BESS? Some of these might help you.

What applications is the STM 261 energy storage system designed for?

Our BESS supports grid-tied, off-grid, and hybrid applications, making it ideal for solar + storage, peak shaving, backup power, and microgrids. The system features advanced thermal management designed to ensure stable, efficient operation across a wide range of environmental conditions.

Why is liquid cooling a key advantage of STM 261 BESS?

Liquid cooling maintains extremely stable cell temperatures, with differences of less than 3°C across the battery packs. This extends battery lifespan, improves efficiency, and ensures reliable performance even in high-temperature environments.

How safe is the STM 261 for long-term operation?

Safety is ensured through LiFePO₄ battery chemistry, an intelligent BMS, continuous monitoring, gas detection, ventilation, and integrated aerosol fire suppression. These layered protections enable secure and reliable long-term operation.

Is the STM 261 suitable for outdoor and harsh environments?

Yes. The system is designed using FEOC-free materials and supply chains, supporting compliance with US regulatory and procurement requirements. This makes it suitable for projects requiring transparent, non-restricted sourcing.

How easy is the STM 261 installation and commissioning?

Yes. The system is designed for outdoor installation with a robust enclosure, corrosion protection, and a wide operating temperature range from –30°C to +60°C. This makes it suitable for diverse climates and demanding site conditions.

More Information

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