ESS-GRID FlexiO

The ESS-GRID FlexiO is a versatile, all-in-one commercial and industrial energy storage solution designed for flexible deployment in solar, commercial, and industrial applications. Built for high efficiency, reliability, and safety, it provides stable energy management, seamless backup power, and scalable performance to support peak shaving, grid stabilization, and renewable energy integration.

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Power Smarter, Operate Greener – ESS-GRID FlexiO Modular Energy Storage

The ESS-GRID FlexiO is an air-cooled commercial and industrial energy storage system featuring a split PCS and battery cabinet design for flexible 1+N scalability. Compatible with solar PV, diesel generators, and the grid, it delivers reliable, stable power for microgrids, remote sites, manufacturing plants, farms, and EV charging stations.

Durable LiFePO₄ Technology

Adopts 314Ah LiFePO₄ Cells for High Safety, Thermal Stability, and Long-Life Commercial & Industrial Energy Storage

Scalable Energy Expansion

Each ESS-GRID FlexiO cabinet offers 241 kWh / 768 V capacity and can scale up to 1.2 MWh with five parallel units, providing flexible, reliable energy storage to meet a wide range of commercial, industrial, and solar project requirements.

Smart Cooling & Quiet Operation

Equipped with a 3 kW air-cooling system, the ESS-GRID FlexiO maintains optimal operating temperatures while keeping noise levels below 78 dB, ensuring quiet, efficient, and reliable energy storage for commercial and industrial applications.

Outdoor-Ready Protection

Featuring an IP55-rated, anti-corrosion enclosure, the ESS-GRID FlexiO ensures reliable performance in dusty, rainy, and harsh outdoor environments, providing durable and safe energy storage for commercial and industrial applications.

Compact, All-in-One Energy Storage Design

The ESS-GRID FlexiO integrates battery modules, BMS, and cooling system within a single cabinet (1850 × 1430 × 2300 mm, 3310 kg), enabling quick installation, easy maintenance, and streamlined commercial and industrial energy management.

Intelligent Power Management

The ESS-GRID FlexiO supports a maximum 157 A charge/discharge current and features CAN-based BMS communication, providing precise monitoring, advanced protection, and efficient power management for commercial and industrial energy storage systems.

DC-Side Expansion for Extended Backup Power

Add additional ESS-GRID 241C battery cabinets (241 kWh each at 768 V) to expand energy storage and extend backup runtime. By combining multiple cabinets, the system can deliver 2–4 hours of continuous power, making it ideal for industrial production, data centers, commercial facilities, and other critical applications requiring reliable and uninterrupted energy.

AC-Side Expansion for Increased Power Capacity

Connect up to two ESS-GRID FlexiO systems in parallel to scale power from 500 kW to 1 MW with a total storage capacity of 3.8 MWh. This configuration is ideal for manufacturing plants, EV charging stations, and microgrid applications, providing reliable, high-power energy delivery when it matters most.

Specifications

Discover ESS-GRID FlexiO Performance

The ESS-GRID FlexiO is a modular, all-in-one LiFePO₄ energy storage system designed for commercial, industrial, and solar-integrated applications. With scalable capacities from 200 kWh to 241 kWh and system voltages from 716.8 V to 768 V, it provides flexible, reliable, and efficient energy storage for a wide range of projects.

Parameter	Details
Model	ESS-GRID 241C
Rated Battery Capacity	241 kWh
Rated System Voltage	768 V
System Voltage Range	360 V ~ 620 V
Cell Capacity	314 Ah
Battery Type	LiFePO₄ (LFP)
Battery Series-Parallel Connection	1P × 16S × 15S
Maximum Charge/Discharge Current	157 A
Protection Grade	IP55
Cooling and Heating	3 kW Air Conditioning
Noise Level	Less than 78 dB
Cooling Method	Intelligent Air-Cooling
BMS Communication	CAN
Dimension (W × D × H)	1850 × 1430 × 2300 mm
Weight (With Batteries Approx.)	3310 kg ±3%
Total System Capacity	1.205 MWh (5 × 241 kWh Cabinets)

Parameter	Details
Model	ESS-GRID P500E
PCS Rated AC Power	500 kW
PCS Rated AC Current	720 A
PCS Rated AC Voltage	400 V, 3W+PE / 3W+N+PE
PCS Rated AC Frequency	50/60 ±5 Hz
Total Harmonic Distortion of Current (THDₗ)	＜3% (rated power)
Load Voltage Rating	400 Vac, 3W+PE / 3W+N+PE
Load Voltage Frequency	50/60 Hz
PCS DC Side Voltage Range	625–950 V (three-phase three-wire), 670–950 V (three-phase four-wire)
PCS DC Side Maximum Current	880 A
Protection Grade	IP54
Self-Consumption	<100 W (without transformer)
Noise Level	Less than 78 dB
Ambient Temperature	-25 °C ~ 60 °C (derating above 45 °C)
Cooling Method	Intelligent Air Cooling
BMS Communication	CAN
Dimension (W × D × H)	1450 × 1000 × 2300 mm
Weight (With Battery Approx.)	1700 kg

Parameter	Details
Model	ESS-GRID P500L
Photovoltaic (DC/DC) Power Rating	500 kW
PV DC Voltage Range	312 V ~ 500 V
PV Maximum DC Current	1600 A
Protection Grade	IP54
Display	Touch LCD screen
Relative Humidity	0~95% (non-condensing)
Noise Level	Less than 78 dB
Ambient Temperature	-25 °C ~ 60 °C (derating above 45 °C)
Cooling Method	Intelligent air cooling
EMS Communication	Ethernet / RS485
Dimension (W × D × H)	1300 × 1000 × 2300 mm
Weight (With Battery Approx.)	500 kg