Sungrow Launches PowerStack 3.0 C&I Battery With Four-Module Dock

• Sungrow launched its PowerStack 3.0 commercial and industrial battery series with a dock for PCS, solar, EV charging and microgrid modules.
• The company claims up to 256 kWh/m² and a 43% smaller footprint for a 5-MWh plant than the previous generation.
• Sungrow has not published prices, per-cabinet capacity or a shipping date.

Sungrow launched its PowerStack 3.0 series of commercial and industrial (C&I) battery storage systems at the Global Energy Pioneer Summit 2026 in Hefei, China. Its "multi-scenario dock" takes four modules: PCS, solar, EV charging and microgrid, the company said in a statement on Nov. 11.

Combining PCS modules lets one cabinet type run as a two-hour or a four-hour system. The solar module lets the storage PCS convert PV power, so a commercial solar site needs no separate inverter. The charging module DC-couples EV chargers too. With the microgrid module, Sungrow says the system switches from grid-connected to off-grid operation in 0 ms without a separate static transfer switch cabinet.

The hardware pairs a silicon carbide PCS, rated at up to 99.2% conversion efficiency, with a 684-Ah stacked cell. Sungrow puts round-trip efficiency above 92%. The system runs from -30°C to 50°C and tolerates up to 30% grid harmonics, the company said.

The series ships with Bubbly, Sungrow's in-house AI assistant. Sungrow says it drafts a site design from satellite images in 30 seconds and finishes commissioning in three minutes. Its energy management dispatch mixes self-consumption, demand control, arbitrage and frequency regulation. Sungrow says that lifts returns by more than 12% against plain self-consumption.

The launch in numbers

• 256 kWh/m², at most, of energy density, with up to 20 units connected in parallel.
• 43% less floor space for a 5-MWh plant than the previous generation, Sungrow says.
• About 19.5 m² of cabinet footprint holds 5 MWh at the 256 kWh/m² maximum (list.solar calculation).
• 1.75 times the energy per square metre of site implied by that 43% cut (list.solar calculation).
• Over 92% round-trip efficiency, against 90% listed for Sungrow's current 125-kW / 257-kWh PowerStack 255CS.
• 1 minute for Bubbly to produce a fault diagnosis report for a 10-MWh plant.
• 50% of Sungrow's first-half 2026 revenue came from storage systems: 15.46 billion yuan, down 13.2% year on year.

Storage was Sungrow's largest business line in the first half, its half-year report shows. Group revenue fell 21.5% year on year to 17.95 billion yuan in the third quarter, its quarterly report filed in Shenzhen shows.

"Today, we have entered the 3.0 era—the scenario-driven era," Cao Wei, general manager of Sungrow's C&I energy storage product line, said.

Sungrow did not give per-cabinet ratings, prices or a delivery date for PowerStack 3.0.