Sungrow, a global leader in photovoltaic inverter and energy storage technologies, introduced its new Commercial & Industrial (C&I) PowerStack On&Off-Grid Solar-Storage solution during Intersolar Europe.
With rising energy costs and growing concerns over grid stability worldwide, businesses are increasingly seeking energy solutions that provide uninterrupted power while advancing sustainability objectives. Sungrow's latest C&I PowerStack system addresses these challenges through flexible configurations and adaptability across multiple operating environments, delivering dependable and efficient power solutions for commercial and industrial customers. The platform supports a range of operating modes, including virtual power plant (VPP), demand response management, virtual synchronous generator (VSG), backup power, seamless grid transition, and black-start functionality, enabling reliable performance under diverse grid conditions.
DC-Coupled: Integrated All-in-One Backup Solution
The DC-coupled configuration combines the SH125CX hybrid inverter with the ST245CS-S energy storage system, creating a unified energy ecosystem where solar generation, battery storage, and diesel backup operate together. This integrated approach allows seamless switching between grid-connected and standalone operation.
For facilities requiring up to 250 kW of power, the solution removes the need for a separate automatic transfer switch (ATS) cabinet, lowering initial capital expenditure and simplifying installation. In addition, direct battery charging from solar generation enhances system efficiency and increases renewable energy utilization.
AC-Coupled: Flexible and Independent Backup Integration
The AC-coupled configuration integrates the SG series photovoltaic inverter with the ST255CS storage system and ATS1250. In the event of a grid outage, the system automatically assumes the load, while prolonged outages trigger synchronized startup of diesel generators when necessary. Existing solar installations can incorporate the storage solution through a plug-and-play approach, avoiding major modifications and minimizing retrofit costs.
While newly constructed facilities may benefit most from the cost advantages of DC-coupled systems, existing sites can take advantage of the AC-coupled architecture's lower retrofit requirements. The ideal configuration ultimately depends on each customer's infrastructure and energy needs.
Broad Application Support Across Commercial and Industrial Sectors
The PowerStack solution is designed to support grid-connected, hybrid on/off-grid, and fully off-grid applications. It can be deployed across a wide range of environments, including commercial properties, retail establishments, office buildings, agricultural operations, logistics centers, and island resort microgrids.
The technology has already demonstrated its adaptability in various real-world applications, including a fully off-grid sawmill in South Australia and weak-grid installations in Cambodia. In these environments, the system helps customers ensure reliable power supply, reduce dependence on diesel generators, and advance sustainability goals.
Key Benefits for Customers
Enhanced power reliability: Seamless transition between grid-connected and off-grid operation, with megawatt-scale black-start capability to ensure uninterrupted service. Comprehensive application coverage: Scalable from single-unit installations to multi-cabinet systems, supporting commercial buildings, agriculture, logistics facilities, islands, and hospitality operations. Improved economic returns: Helps reduce peak demand charges, maximize self-consumption of renewable energy, and lower diesel fuel consumption. Operational simplicity: Features streamlined operation and maintenance along with real-time monitoring through the iSolarCloud platform, enabling effective management even in remote locations. Advanced safety measures: Incorporates proactive risk detection, three-tier overcurrent protection, and three-level fire suppression systems to enhance operational security. With rising energy costs and growing concerns over grid stability worldwide, businesses are increasingly seeking energy solutions that provide uninterrupted power while advancing sustainability objectives. Sungrow's latest C&I PowerStack system addresses these challenges through flexible configurations and adaptability across multiple operating environments, delivering dependable and efficient power solutions for commercial and industrial customers. The platform supports a range of operating modes, including virtual power plant (VPP), demand response management, virtual synchronous generator (VSG), backup power, seamless grid transition, and black-start functionality, enabling reliable performance under diverse grid conditions.
DC-Coupled: Integrated All-in-One Backup Solution
The DC-coupled configuration combines the SH125CX hybrid inverter with the ST245CS-S energy storage system, creating a unified energy ecosystem where solar generation, battery storage, and diesel backup operate together. This integrated approach allows seamless switching between grid-connected and standalone operation.
For facilities requiring up to 250 kW of power, the solution removes the need for a separate automatic transfer switch (ATS) cabinet, lowering initial capital expenditure and simplifying installation. In addition, direct battery charging from solar generation enhances system efficiency and increases renewable energy utilization.
AC-Coupled: Flexible and Independent Backup Integration
The AC-coupled configuration integrates the SG series photovoltaic inverter with the ST255CS storage system and ATS1250. In the event of a grid outage, the system automatically assumes the load, while prolonged outages trigger synchronized startup of diesel generators when necessary. Existing solar installations can incorporate the storage solution through a plug-and-play approach, avoiding major modifications and minimizing retrofit costs.
While newly constructed facilities may benefit most from the cost advantages of DC-coupled systems, existing sites can take advantage of the AC-coupled architecture's lower retrofit requirements. The ideal configuration ultimately depends on each customer's infrastructure and energy needs.
Broad Application Support Across Commercial and Industrial Sectors
The PowerStack solution is designed to support grid-connected, hybrid on/off-grid, and fully off-grid applications. It can be deployed across a wide range of environments, including commercial properties, retail establishments, office buildings, agricultural operations, logistics centers, and island resort microgrids.
The technology has already demonstrated its adaptability in various real-world applications, including a fully off-grid sawmill in South Australia and weak-grid installations in Cambodia. In these environments, the system helps customers ensure reliable power supply, reduce dependence on diesel generators, and advance sustainability goals.
Key Benefits for Customers
As the global shift toward clean energy continues to accelerate, on/off-grid solar storage solutions are increasingly becoming essential components of modern energy infrastructure rather than optional enhancements. Sungrow remains focused on advancing clean energy technologies that provide businesses worldwide with reliable, secure, and sustainable power solutions.