Sungrow, a global leader in renewable energy technologies with over 28 years of experience in the research, development and manufacturing of solar inverters and energy storage systems, expands its portfolio with the new Sungrow SH125CX, a hybrid inverter specifically designed for the Commercial & Industrial (C&I) segment.
This new solution builds on the proven SG125CX-P2 string inverter, integrating a powerful high-voltage battery charger with a charge/discharge current of up to 200 A and a maximum power output of 125 kW. The result is an advanced solution designed for commercial and industrial PV systems with battery storage, helping to maximise self-consumption, operational continuity and intelligent energy management.
Optimised architecture for next-generation PV modules
One of the key upgrades introduced with the Sungrow SH125CX is the complete redesign of the PV-side architecture. MPPT current has been increased to 40 A, ensuring compatibility with the latest high-power modules featuring G12 cells.
The DC/AC ratio has also been increased to up to 200%, thanks to the ability to manage both PV modules and the battery system simultaneously on the DC bus. This provides greater design flexibility and enables more effective use of the energy generated by the PV system.
Advanced functions for self-consumption and energy management
The Sungrow SH125CX integrates the key functions required by today’s advanced C&I energy systems. The inverter features:
- backup output for enhanced continuity of supply
- integrated EMS for advanced energy management
- self-consumption mode
- peak shaving to reduce peak power demand
- time-of-use functions to optimise energy costs according to different tariff periods
These features make the SH125CX particularly suitable for energy-intensive businesses, industrial facilities, commercial buildings and manufacturing sites with complex consumption profiles.
Safety and reliability in demanding environments
Like other inverters in the Sungrow range, the SH125CX integrates advanced protection and diagnostic technologies. These include:
- Anti-PID function to help recover the performance of degraded PV modules
- AFCI 3.0 (Arc Fault Circuit Interrupter) with arc detection up to 450 metres
- IP66 protection rating
- C5 anti-corrosion rating, making it suitable for demanding industrial environments and coastal areas
The inverter is therefore designed to provide reliable operation even under particularly challenging environmental conditions.
Simplified maintenance and advanced monitoring
From an O&M perspective, the Sungrow SH125CX has been developed to reduce intervention times and operating costs. Available features include:
- automatic air-duct cleaning system
- individual string monitoring
- I-V curve scanning for diagnostics and fault detection
- optimised operating temperature for maximum energy yield
These capabilities are particularly valuable for installers, EPC contractors and operators managing multi-site PV systems or complex energy assets.
Sungrow PowerKeeper batteries for DC-coupled C&I energy storage
To complement its C&I storage offering, Sungrow introduces the new PowerKeeper batteries, designed for direct integration with the SH125CX.
The units use 3.2 V LFP cells, with a net capacity of 12.48 kWh and a 0.5 C charge/discharge rate. The modular configuration enables storage systems ranging from approximately 50 to 150 kWh, comprising one to four battery towers.
PowerKeeper batteries are also designed for outdoor installations and industrial environments, featuring:
- IP66 protection
- C5 anti-corrosion rating
- forced-air cooling
- temperature and smoke sensors
- chassis with pressure relief valves
- flood resistance up to 50 cm
Modularity, retrofit capability and maximum scalability
The modular approach significantly simplifies installation and future system expansion. Each module weighs approximately 90 kg, facilitating transportation and installation on site.
The batteries can be installed:
- side by side in a linear configuration
- back to back
- with a dedicated technical aisle for maintenance
Thanks to advanced cell-balancing software, storage capacity can be expanded at any time, allowing the system to adapt to changing business energy requirements.
A single inverter can support up to 4 ST050-250CF units, providing a total storage capacity of up to 1,000 kWh.
System configurations and communication
The system supports complex configurations with up to 24 inverters within the same installation, including retrofit projects on existing PV systems. System monitoring and management are handled by the proven Logger1000, included in the COM100 communication package.
Why choose Sungrow SH125CX for the C&I market?
The Sungrow SH125CX is an advanced solution for commercial and industrial PV systems integrating battery energy storage. High power density, intelligent energy management, advanced safety features and scalability make it an ideal platform for installers and energy professionals developing high-performance C&I projects.
VP Solar supports installers, EPC contractors and system integrators with technical consultancy and Sungrow solutions specifically designed for the professional market.
Sungrow PowerKeeper Series ST050-250CF + SH125CX
The Sungrow PowerKeeper Series is a C&I (Commercial & Industrial) ESS energy storage system designed for commercial and industrial photovoltaic applications. Based on the “Ace 007, Ace Profit” concept, it combines modular design, operational continuity and intelligent energy optimisation to maximise the value of energy storage.
- Modular capacity from 50 kWh to 1,000 kWh with 12.5 kWh battery modules
- DC-coupled design for simplified installation and optimised space utilisation
- Fast backup response with integrated ATS and off-grid mode transition in approximately 10 ms
- High environmental protection with IP66 rating, C5 corrosion resistance and operating temperature range from -20 °C to +50 °C
- Intelligent energy management for self-consumption, peak shaving, energy arbitrage and microgrid applications
Datasheet English
Complete documentation
The Sungrow PowerKeeper Series is a C&I energy storage solution developed for commercial and industrial installations requiring high configuration flexibility, energy continuity and advanced performance management.
The solution is based on the “Ace 007, Ace Profit” concept, which identifies the key advantages of the Sungrow platform: 0 Waste thanks to the modular design, 0 Outage thanks to the integrated ATS, and 7 Ups through comprehensive optimisation across the installation, commissioning, operation, maintenance, safety and system profitability phases.
The system consists of ST050-250CF battery modules with a nominal capacity of 12.48 kWh and the SH125CX hybrid inverter, enabling configurations from 50 kWh up to 1,000 kWh according to the energy requirements of the application. The modular architecture allows the installed capacity to be adapted to the actual consumption profile of the end user, optimising the initial investment and enabling future expansion.
The modular configuration also simplifies logistics and installation processes. The system can be supplied with a pre-assembled 50 kWh stack, reducing installation times and accelerating on-site deployment, while individual battery modules provide greater flexibility for system configuration and future capacity upgrades.
For applications requiring power continuity, PowerKeeper integrates an ATS (Automatic Transfer Switch) that enables a transition to off-grid mode within ≤10 ms, ensuring continuous power supply to connected loads.
The platform is designed for both indoor and outdoor installations thanks to its IP66 protection rating, C5 corrosion resistance and operating temperature range from -20 °C to +50 °C. The system also provides enhanced protection against harsh environmental conditions, including resistance to immersion in up to 50 cm of water.
System safety is ensured through multi-level protection with monitoring from the individual cell level through to the complete system. The control technology includes electrical and thermal monitoring, as well as advanced diagnostics, improving reliability, operational safety and system lifetime.
PowerKeeper integrates advanced Energy Management System (EMS) functions to automatically optimise energy flows according to photovoltaic generation, consumption profiles and grid conditions. The system supports applications including PV + ESS, peak shaving, energy arbitrage, backup power, microgrids and EV charging infrastructure integration, contributing to reduced energy costs and maximising the value of stored energy.
