EPES261L — Outdoor Liquid-Cooled Energy Storage System
The EPES261L is an all-in-one outdoor energy storage system combining a 125 kW power conversion system with a 261 kWh LFP battery. Designed for commercial and industrial applications, it supports electricity arbitrage and PV self-consumption.
The system uses 314 Ah battery cells and has a 0.5C charge/discharge rate. Its active liquid cooling and heating system helps manage battery temperature across a wide operating range. The pre-assembled cabinet is designed for outdoor installation and simplified deployment.
With an IP55-rated enclosure and integrated fire protection, the EPES261L provides a compact energy storage solution for sites seeking to manage energy use and make better use of solar generation.
Key Features
- High-capacity storage: 261 kWh nominal energy capacity.
- Powerful output: 125 kW rated AC power, with up to 137.5 kW maximum AC power.
- LFP battery: 314 Ah cells with a 0.5C charge/discharge rate.
- Active thermal management: Liquid cooling and heating system.
- Integrated fire protection: Aerosol system, pack-level immersion and active warning.
- Outdoor-ready enclosure: IP55 protection and C4 anti-corrosion rating.
- Long cycle life: More than 8,000 cycles, with 70% end-of-life capacity at 95% depth of discharge.
Benefits
- Energy cost management: Supports electricity arbitrage by storing energy for use at more valuable times.
- Solar self-consumption: Store surplus PV generation for later use.
- Pre-assembled system: An all-in-one cabinet designed to simplify installation.
- Outdoor deployment: A compact footprint and weather-resistant enclosure support outdoor installation.
- Thermal and fire protection: Integrated systems help manage battery temperature and safety.
Technical Specifications
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Specification
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EPES261L
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Nominal energy capacity
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261 kWh
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Rated AC power
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125 kW
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Maximum AC power
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137.5 kW
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Battery chemistry
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LFP
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Battery cell capacity
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314 Ah
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Charge/discharge rate
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0.5C
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Nominal DC voltage
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832 V
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DC operating voltage range
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715–936 V
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Nominal grid voltage
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230/400 V AC
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Grid frequency
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50/60 Hz
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Depth of discharge
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0–95%
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Cycle life
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>8,000 cycles; 70% EOL at 95% DoD
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Cooling and heating
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Active liquid cooling and heating
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Protection rating
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IP55
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Anti-corrosion rating
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C4
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Operating temperature
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−30°C to 55°C
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Dimensions (W × D × H)
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1,050 × 1,350 × 2,400 mm
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Weight
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Approx. 2,750 kg
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