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
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 - 261 kW
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.
Product Inquiry
Request more information about this product and find out the best way it can fit your needs.
More Details
Check out STM BESS’ core specifications.
Product Inquiry
Request more information about this product and find out the best way it can fit your needs.
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 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.
How easy is the STM 261 installation and commissioning?
The BESS is delivered as a pre-integrated, turnkey solution with clear installation and commissioning procedures. This minimizes on-site work, shortens project timelines, and simplifies deployment for EPCs and developers.
More Information
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