SigenStack Modular C&I Battery Energy Storage

Sigenergy is a Shanghai-based maker of AI-driven solar inverters, energy storage systems and EV chargers for homes, businesses and utilities. It runs a global R&D headquarters and a 36,000 square metre factory in Pudong with its own MES, and sells through distributors and installers in Europe, Asia Pacific, the Americas and the Middle East.

For commercial and industrial users, SigenStack is a modular BESS built from stackable 12 kWh battery packs paired with Sigen C&I hybrid inverters and the Business Energy Gateway. Plug-and-play connectors remove complex wiring, and the DC-coupled design lets solar charge the batteries without extra PV inverters or MV stations. Sigen Cloud provides real-time monitoring for on-grid, PV plus storage and microgrid systems.

• Modular packs: 12 kWh stackable battery modules with plug-and-play installation.
• Pack-level safety: smoke sensor, temperature detection, insulation, decompression valve and fire extinguishing kit in each pack.
• DC coupling: direct PV-to-battery charging without extra PV inverter or MV station.
• C&I hybrid inverter: integrated EMS and wide MPPT range for PV plus storage.
• Business Energy Gateway: supports on-grid, self-consumption and microgrid modes with diesel backup.
• Sigen Cloud: real-time monitoring and fault alerts for installers and owners.

Factories with rooftop solar in Vietnamese industrial parks can add SigenStack to store midday surplus for evening shifts. Shopping malls and hotels can shave peak demand charges. Remote farms or resorts can run a PV, battery and diesel microgrid.

Capacity can be sized in 12 kWh steps to match the project, avoiding oversizing. DC coupling improves round-trip efficiency by up to 2% versus AC-coupled designs and cuts equipment such as PV inverters and combiners. Six layers of pack-level protection and IP66 enclosures reduce safety risk and routine maintenance.

Commercial and industrial users are adding batteries to rooftop solar to raise self-consumption, cut peak charges and keep power during outages. Vietnam's rules for self-consumed rooftop solar and direct power purchase are increasing interest in compact, installer-friendly storage that can scale with each site.

Headquartered in Shanghai with a Pudong factory powered partly by a 3,000 square metre rooftop PV plant. Regional sites cover China, Japan, Australia, India and Myanmar in Asia Pacific. Reports a 20 MWh SigenStack project in Bulgaria and a 2026 Stuttgart utility-scale showcase.