On November 11, Sungrow officially unveiled its next-generation C&I storage product, PowerStack 3.0.
The biggest highlight of this new product lies in its modular underlying architecture, which integrates four specialized module types—PCS, PV, charging, and microgrid—allowing project developers to freely mix and match configurations based on actual site requirements. Specifically, standalone storage scenarios support switching between 2-hour and 4-hour configurations; PV-storage scenarios achieve DC coupling via the PV-storage module; PV-storage-charging scenarios enable DC-side synergy across solar, storage, and charging systems; and microgrid scenarios support seamless 0ms on-grid and off-grid switching.
Significant upgrades have also been made to core components and space utilization. Equipped with Sungrow's proprietary silicon carbide (SiC) PCS—which achieves a peak conversion efficiency of 99.2%—and paired with 684Ah stacked cells, PowerStack 3.0 pushes overall system round-trip efficiency (RTE) past 92%. Given the tight land constraints common in commercial and industrial parks, the product boosts energy density to 256 kWh/m² and supports up to 20 cabinets connected in parallel. Calculated on the basis of a 5 MWh power station, the new solution slashes the footprint by 43% compared to the previous generation.
On the software side, PowerStack 3.0 features Sungrow's built-in proprietary AI assistant, Bubbly, seamlessly connecting every stage from upfront solution design and delivery commissioning to downstream energy management and operations and maintenance (O&M). Among the most tangible efficiency gains, on-site commissioning time is compressed to under three minutes, while during daily operation, the system dynamically adjusts charging and discharging strategies based on PV generation and load forecasts.
In addition, Sungrow showcased its PowerKeeper series of C&I storage products and introduced PowerKeeper Lite; for the residential market, the company unveiled the new modular Minicube series alongside PowerHarbor and the low-voltage MG&MBL series, which is designed specifically for weak-grid environments.
