Introducing Our Liquid-Cooled ESS Lineup: Next-Generation Utility-Scale Energy Storage

We are excited to announce the launch of our liquid-cooled energy storage system (ESS) lineup — a major milestone in our mission to deliver utility-scale storage solutions that meet the demands of modern energy infrastructure.

The new lineup includes two flagship products: the EIT-LCE-418 (417.9 kWh) modular unit and the EIT-LCE-5015 (5.015 MWh) containerized system, both engineered from the ground up with advanced liquid-cooled thermal management.

Why Liquid Cooling Matters

Thermal management is the single most critical factor in battery storage performance and longevity. Temperature directly impacts:

• Cycle life — Every 10°C increase above optimal operating temperature can halve battery lifespan
• Capacity retention — Heat accelerates calendar aging and capacity fade
• Safety — Proper thermal control prevents thermal runaway cascades
• Performance — Cells operate at peak efficiency within a narrow temperature band

Traditional air-cooled systems struggle to maintain uniform cell temperatures, especially in large-scale installations or extreme climates. Liquid cooling solves these challenges decisively.

Liquid Cooling vs. Air Cooling: Head-to-Head

"Liquid cooling isn't just an incremental improvement — it's a generational leap in how we design and deploy energy storage at scale."

Product Spotlight: EIT-LCE-418 (417.9 kWh)

The EIT-LCE-418 is our building-block unit for scalable utility storage deployments. Designed to be stacked and paralleled, it offers maximum flexibility for system integrators and project developers.

Key Specifications

• Usable capacity: 417.9 kWh
• Nominal voltage: 1,024 V DC
• Max continuous charge/discharge: 200 kW
• Round-trip efficiency: ≥ 95.5%
• Cycle life: > 6,000 cycles at 90% DoD
• Dimensions: 1,300 × 1,100 × 1,600 mm (W × D × H)
• Weight: Approximately 2,800 kg
• Protection rating: IP55

Design Highlights

The unit features a modular coolant distribution system with redundant circulation pumps. Each cell module has dedicated cooling plates with optimized channel geometry, ensuring every cell operates within a 2°C temperature band regardless of charge/discharge rate.

The integrated Battery Management System (BMS) provides:

• Cell-level voltage and temperature monitoring
• Active cell balancing during charge and standby
• Real-time state-of-health (SoH) estimation
• Predictive thermal modeling for proactive cooling adjustment
• Multi-level fault protection with automatic isolation

Product Spotlight: EIT-LCE-5015 (5.015 MWh)

The EIT-LCE-5015 is our flagship containerized ESS — a complete, turnkey energy storage solution housed in a standard 20-foot container. It combines 12 EIT-LCE-418 modules with an integrated power conversion system, fire suppression, and site-level controls.

Key Specifications

• Usable capacity: 5.015 MWh
• Max power output: 2.5 MW
• Container format: Standard 20-foot ISO container
• Grid connection: Medium voltage transformer included (optional)
• Round-trip efficiency: ≥ 94%
• Operating temperature: -30°C to +55°C (no derating)
• Cycle life: > 6,000 cycles at 90% DoD
• Certifications: IEC 62619, UL 9540A, CE

Deployment Advantages

The containerized design dramatically simplifies project execution:

1. Pre-assembled and factory-tested — Arrives on site ready for grid connection
2. Standardized footprint — Leverages existing container logistics and foundations
3. Scalable — Multiple containers parallel seamlessly for 10, 50, or 100+ MWh projects
4. Integrated fire suppression — Aerosol-based system with early detection sensors
5. Remote monitoring — Cloud-connected SCADA with real-time dashboards and alerts

Engineering the Cooling System

Our liquid cooling architecture uses a glycol-water mixture circulated through precision-machined aluminum cold plates bonded to each battery module. The system operates in a closed loop with the following components:

• Primary loop: Cold plates → manifold → heat exchanger
• Secondary loop: Heat exchanger → dry cooler (outdoor unit)
• Emergency loop: Backup cooling with integrated thermal reservoir

The dual-loop design provides N+1 redundancy — if one circulation pump fails, the system continues operating at full capacity using the backup pump. Coolant flow rates are dynamically adjusted based on real-time thermal demand, minimizing parasitic power consumption during low-utilization periods.

Thermal Performance in Extreme Conditions

We validated our cooling system across all climate zones:

• Hot desert (55°C ambient): Full rated power maintained, peak cell temperature < 35°C
• Tropical humid (40°C, 95% RH): No condensation issues with sealed coolant circuits
• Arctic winter (-30°C): Integrated heating brings cells to operating temperature in < 15 minutes

Applications and Use Cases

The liquid-cooled ESS lineup is designed for demanding utility and commercial applications:

• Grid-scale renewable integration — Smoothing solar and wind variability
• Frequency regulation — Sub-second response for ancillary services markets
• Capacity firming — Guaranteeing dispatchable power from renewable plants
• Transmission and distribution deferral — Avoiding costly grid infrastructure upgrades
• Industrial peak management — Reducing demand charges for large facilities
• Microgrid backbone — Providing reliable storage for island and off-grid systems

Availability and Next Steps

Both the EIT-LCE-418 and EIT-LCE-5015 are available for order now, with lead times of 8–12 weeks for standard configurations. Custom configurations — including specific voltage ranges, communication protocols, and enclosure ratings — are available on request.

We offer comprehensive support including:

• Site assessment and system design by our engineering team
• Installation supervision and commissioning support
• Extended warranty programs up to 20 years
• Remote monitoring and preventive maintenance through our operations center

Ready to explore our liquid-cooled ESS solutions? View the full specifications for each product below.