SolaX ESS-TRENE 125kW / 261kWh C&I energy storage system with liquid cooling

The liquid-cooled energy storage system (ESS) from SolaX (MPN: 1070010120) delivers up to 125 kW of output power with 261 kWh of storage capacity and is designed for space-critical installations. It is a fully integrated all-in-one solution for outdoor use and combines high-performance PCS (Power Conversion Systems), advanced BMS (Battery Management System), high-capacity battery modules, intelligent EMS (Energy Management System), efficient liquid cooling, and integrated fire protection in a robust cabinet. All components are factory-matched, giving you a fast, easy-to-install solution.(Energy Management System), efficient liquid cooling, and integrated fire protection in a robust cabinet. All components are factory-matched, giving you the benefit of fast, clean installation and smooth commissioning.
Liquid cooling ensures stable performance even at high ambient temperatures, protects the cells, and increases service life. If your power or capacity requirements grow, you can expand the system easily and economically without disrupting existing processes. This gives you a secure, predictable, and efficient energy supply—ideal for industrial and commercial outdoor applications. The system records operating parameters as well as event and error logs seamlessly over 12 months, creating transparency for analysis, optimization, and verification.

The advantages of the energy storage system

• Advanced all-in-one energy management system
• Support for microgrids and a wide range of scenarios
• Four-stage fire protection, aerosol fire extinguishing system for precise protection
• Advanced fault detection and response,
• LiFePO4 battery and powerful processors
• Cell-level balancing & intelligent temperature control
• Grid-connected and off-grid support
• VPP-ready with SolaX Cloud (2030.5, OpenADR)
• Type II surge protection device (SPD) on AC side
• Self-developed BMS & EMS via SolaX Cloud
• Storage of historical data for over a year
• Compatibility with wireless meters
• Scalable up to megawatt hours

Support for microgrids and a wide range of scenarios

The air-cooled TRENE‑ESS can operate reliably both in conjunction with the public grid and as a separate island grid. The system can set up and maintain a local grid, adapt to existing grids, and start up independently after power outages. Typical applications include emergency power supply, peak shaving and load shifting, self-consumption optimization with PV, and buffering for charging infrastructure, construction sites, events, or remote locations. Your advantage: high supply security, lower energy costs, and a flexibly scalable solution for your specific application.

Advanced EMS

The system optimizes the storage strategy in real time using algorithms based on current electricity prices and load profiles. It automatically switches between self-consumption optimization, peak shaving, grid feed-in, and backup operation to maximize efficiency and yield. This allows you to reduce energy costs, make optimal use of time-variable tariffs, and shorten the payback period of your investment.

Grid-connected and off-grid support

It either works with the public grid or supplies you independently when needed. In grid operation, it optimizes self-consumption, smooths out power peaks, and takes advantage of dynamic tariffs. In the event of a grid failure or desired self-sufficiency, the system forms its own grid (voltage and frequency) and keeps critical consumers reliably in operation— depending on the configuration, even with automatic transition. This gives you maximum flexibility, high supply security, and economical operation.

Cell-level balancing & intelligent temperature control

Cell-level balancing – every single battery cell in the system is monitored and its state of charge is balanced. This ensures that all cells operate evenly, none are overcharged or undercharged, and you make optimal use of the available capacity. This ensures stable performance and protects the battery.
Intelligent temperature control - automatically regulates the operating temperature using multiple sensors and liquid cooling. Heat is dissipated evenly, hot spots are avoided, and the battery remains within its ideal temperature range. This allows you to charge and discharge more efficiently, increases safety, and extends the life of the system.

VPP-ready

This means that the device is prepared for integration into a virtual power plant (VPP). It digitally networks many decentralized energy sources, such as photovoltaic systems, battery storage, or flexible consumers, into a common, controllable network. This allows these systems to participate jointly in the energy market, provide balancing energy, or compensate for peak loads.

The ESS includes the following components

• AC distribution system
• DC side Battery system
• Energy conversion system
• Environmental monitoring system
• Fire extinguishing system
• Energy management system

Protection and safety

The system features a multi-level safety concept: Integrated overvoltage, overcurrent, and overtemperature protection monitors all core components in real time and intervenes immediately in the event of deviations. Fire-retardant materials and a level 4 fire protection system detect potential electrical hazards at an early stage, automatically initiate countermeasures, and reliably keep any fires that do occur under control. This allows you to increase operational safety, minimize downtime, and protect your system, personnel, and the surrounding area.

SolaXCloud

SolaXCloud is an intelligent platform for managing your home energy. It provides you with a clear overview of your energy consumption and power generation, as well as easy control of all connected devices. This allows you to optimize the efficiency of your power consumption and get the most out of your solar system. Your data is transmitted securely and reliably at all times. With the Monitoring Cloud app, you can conveniently monitor your photovoltaic system via Wi-Fi, LAN, or 4G. You can view alarms, adjust settings, and control maintenance. To do this, plug the dongle into the USB port of the inverter. Once switched on, you can connect to the app immediately. You will find the QR code for downloading the app in the user manual.

Technical data

X3-TRENE-125K (inverter)

AC side (grid-connected)

• Nominal output power: 125 kW
• Max. apparent output power: 125 kVA
• AC rated output current 220 V: 189.4 A
• AC rated output current 230 V: 181.2 A
• Max. AC continuous output current at 220 V: 208.4 A
• Max. AC continuous output current at 220 V: 199.3 A
• AC rated voltage: 3/N/PE, 220/380 V, 3/N/PE, 230/400 V
• AC voltage range: 320-460 V
• AC rated frequency: 50/60 Hz

AC side (off-grid)

• AC rated voltage: 3/N/PE, 220/380 V, 3/N/PE, 230/400 V
• AC rated frequency: 50/60 Hz
• Unbalanced load capacity (grid-independent): 100%
• overload capacity: 110% continuous operation, 120% for 1 minute
• AC continuous output current at 220V: 208.4 A
• AC continuous output current at 230V: 199.3 A

DC side

• Battery voltage range: 650-936 V
• Max. charging/discharging current: 202.3 A

General

• Operating temperature range: -35°C to +60°C (>45°C power reduction)
• Protection class: IP66
• Cooling: Intelligent air cooling
• Communication: RS845, CAN, Ethernet, Dl
• Weight: 95 kg
• Dimensions: 665 x 880 x 310 mm

TB-HR522 (battery)

• Battery type: LFP 314 Ah
• Battery capacity: 52.2 kWh
• Charging/discharging current: 157 A
• Max. charging/discharging current: 166.4 A
• Battery voltage range: 130-187.2 V
• Protection class: IP67
• Communication with PCS: CAN
• Weight: 330 kg
• Dimensions: 790 x 1140 x 250 mm

TRENE-P125B261L-E (complete cabinet)

AC side (grid-connected)

• Nominal output power: 125 kW
• Max. apparent output power: 125 kVA
• AC rated output current 220 V: 189.4 A
• AC rated output current 230 V: 181.2 A
• Max. AC continuous output current at 220 V: 208.4 A
• Max. AC continuous output current at 220 V: 199.3 A
• AC rated voltage: 3/N/PE, 220/380 V, 3/N/PE, 230/400 V
• AC voltage range: 340-440 V
• AC rated frequency: 50/60 Hz

AC side (off-grid)

• AC rated voltage: 3/N/PE, 220/380 V, 3/N/PE, 230/400 V
• AC rated frequency: 50/60 Hz
• Unbalanced load capacity (grid-independent): 100%
• overload capacity: 110% continuous operation, 120% for 1 minute
• AC continuous output current at 220V: 208.4 A
• AC continuous output current at 230V: 199.3 A

DC side

• Battery type: LFP / 314 Ah
• Battery capacity: 261 kWh
• Battery nominal voltage: 832 V
• Battery voltage range: 650-936 V

General

• Operating temperature range: -30°C to +55°C
• Protection class: IP55
• Cooling: Liquid cooling
• Weight: 2810 kg
• Dimensions: 1350 x 2355 x 1350 mm

Scope of delivery

1x SolaX ESS-TRENE 125kW / 261kWh energy storage system with liquid cooling
1x Cover
Includes installation and mounting accessories