Ukraine 160kW 418kWh Liquid-Cooled Battery Energy Storage Project

In Ukraine, where winter temperatures often fall below freezing, SunWell Energy successfully deployed a 160kW / 418kWh liquid-cooled energy storage system (ESS) designed for reliable performance in low-temperature environments.

In this project, the inverter was installed indoors, while the liquid-cooled battery cabinet was installed outdoors, fully exposed to cold weather conditions. Despite sub-zero ambient temperatures, the system has continued to operate safely, efficiently, and stably, demonstrating the robustness of SunWell Energy's liquid-cooled energy storage technology.

This project provides a strong reference for outdoor energy storage deployment in cold-climate regions.

System Configuration

ESS Capacity: 160kW / 418kWh

Cooling Technology: Advanced liquid cooling system

Battery Chemistry: LiFePO4 (LFP)

Installation Mode

  • Inverter: Indoor installation
  • Energy storage battery cabinet: Outdoor installation
  • Application Scenario: Commercial & Industrial energy storage

Performance in Low-Temperature Conditions

During operation, local ambient temperatures reached below 0°C, which can pose challenges for conventional air-cooled or poorly managed battery systems.

However, the SunWell Energy liquid-cooled ESS demonstrated:

Stable charge and discharge performance in low-temperature environments

Normal battery temperature control through the built-in heating function

No abnormal alarms or performance degradation during operation

The system's intelligent thermal management strategy ensures that when external temperatures drop, the internal battery heating mechanism is automatically activated, keeping battery cells within an optimal operating temperature range.

This capability significantly enhances system reliability, battery safety, and lifecycle stability in cold climates.

Advantages of Liquid-Cooled Energy Storage in Cold Regions

Compared with traditional air-cooled systems, SunWell Energy’s liquid-cooled ESS offers clear advantages in environments with large temperature variations:

  • Precise thermal control for each battery module
  • Improved temperature consistency, reducing cell imbalance
  • Higher energy density and compact system design
  • Lower operational noise
  • Enhanced system stability for both hot and cold climates
  • Liquid cooling not only supports high-temperature scenarios but also performs exceptionally well in low-temperature outdoor installations, making it suitable for regions such as Eastern Europe.

Monitoring & Visual Evidence

The customer provided comprehensive on-site data, including:

  • Real-time energy management system (EMS) monitoring data
  • Ambient temperature display records
  • Indoor inverter installation photos
  • Outdoor liquid-cooled battery cabinet installation images
  • All operational data confirms that the system maintains stable electrical output and safe thermal behavior, even when exposed to cold outdoor conditions.

Project Value & Reference Significance

This Ukraine project highlights SunWell Energy's capabilities in:

  • Outdoor energy storage deployment
  • Low-temperature system design and validation
  • Liquid-cooled ESS engineering for C&I applications
  • It serves as a practical reference case for customers planning energy storage projects in regions with seasonal low temperatures.

About SunWell Energy

SunWell Energy is a professional manufacturer of lithium battery energy storage systems, specializing in residential, commercial, and industrial energy storage solutions.

With a strong focus on liquid-cooled ESS technology, international certifications, and global project experience, SunWell Energy delivers safe, reliable, and scalable energy storage systems for diverse environmental conditions.

Looking for a Reliable Outdoor Energy Storage Solution?

If your project requires stable energy storage performance in low-temperature or challenging outdoor environments, SunWell Energy can provide customized, factory-direct ESS solutions tailored to your application.

📩 Contact SunWell Energy to discuss your project requirements and receive professional technical support.

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