Description

Sungrow PowerStack ST455kWh-110kW-4h Commercial Battery Energy Storage System (BESS)

The Sungrow PowerStack ST455kWh-110kW-4h is a high-performance Commercial & Industrial Battery Energy Storage System (BESS) engineered to maximize energy efficiency, reduce electricity costs, and improve energy resilience. Featuring a 458 kWh Lithium Iron Phosphate (LFP) battery, an integrated 110 kW bidirectional Power Conversion System (PCS), intelligent liquid cooling, and advanced Battery Management System (BMS), the ST455kWh-110kW-4h delivers a complete all-in-one energy storage solution for commercial, industrial, and renewable energy applications.

Designed for businesses seeking reliable solar energy storage, demand charge reduction, backup power, and microgrid capability, the PowerStack combines battery storage, PCS, thermal management, fire protection, and cloud monitoring within a compact outdoor IP55-rated enclosure. Its factory-integrated architecture significantly reduces installation time, commissioning costs, and overall project complexity.

Key Features

• 458 kWh High-Capacity LFP Battery for long-duration energy storage.
• Integrated 110 kW Bidirectional PCS with up to 98.5% conversion efficiency.
• 4-Hour Energy Storage Duration ideal for commercial and industrial load management.
• AI Bionic Thermal Balance reduces daily auxiliary energy consumption by approximately 33%.
• Intelligent Liquid Cooling maintains battery cell temperature differences within ≤2.5°C, improving efficiency and extending battery life.
• Advanced Battery Management System (BMS) with real-time cell monitoring.
• Three-Level Fire Protection including smoke, heat, combustible gas detection, aerosol suppression, and sprinkler system.
• Cloud-Based Monitoring through Sungrow iSolarCloud for remote diagnostics and performance monitoring.
• On-Grid and Off-Grid Operation with seamless transition capability.
• Expandable Parallel Configuration for larger commercial energy storage projects.

Technical Specifications

Applications

Suitable for a wide variety of commercial and industrial energy storage applications, including:

• Commercial solar PV energy storage
• Industrial solar battery systems
• Peak shaving
• Demand charge management
• Time-of-Use (TOU) energy arbitrage
• Backup power supply
• EV charging stations
• Manufacturing facilities
• Warehouses and logistics centers
• Shopping malls
• Hospitals and healthcare facilities
• Hotels and resorts
• Universities and educational campuses
• Data centers
• Airport and seaport infrastructure
• Renewable energy microgrids
• Remote industrial sites

Performance Benefits

The PowerStack ST455kWh-110kW-4h enables businesses to store excess solar energy generated during the day and discharge it during peak tariff periods, significantly reducing electricity costs and improving return on investment.

Its integrated AI-powered thermal management continuously balances battery temperatures, reducing thermal stress while improving charging and discharging efficiency. Compared to conventional air-cooled systems, the intelligent liquid cooling system provides more uniform battery temperatures, higher efficiency, and extended battery lifespan.

Safety & Reliability

Safety is one of the defining features of the Sungrow PowerStack platform. The ST455kWh-110kW-4h incorporates multiple layers of protection, including:

• AI battery health monitoring
• Early thermal runaway detection
• PACK, RACK, and PCS overcurrent protection
• Smoke detection
• Heat detection
• Combustible gas detection
• Aerosol fire suppression
• Automatic sprinkler system
• Emergency stop functionality
• Intelligent BMS protection

These technologies help ensure reliable operation in demanding commercial and industrial environments while minimizing operational risk.

Lifespan & Cycle Data

• Cycle life (IEC spec): ~6,500 cycles
• Cycle life (AU spec): ~10,000 cycles
• Warranty: 5 years standard (extensions available)
• Shelf life: 10 years (AU spec)
• C‑rate: 0.25C–0.5C charge/discharge, optimized for longevity

What This Means in Practice

• Daily cycling (1 cycle/day) → 6,500 cycles ≈ 17–18 years of use before capacity drops below ~80%.
• Heavy cycling (2 cycles/day) → ≈ 8–9 years lifespan.
• Warranty vs. actual life: Warranty covers 5 years, but real‑world usable life is often much longer if operated within recommended temperature and C‑rate limits.

Why Choose Sungrow PowerStack ST455kWh-110kW-4h?

The Battery Storage combines high-capacity energy storage, intelligent power conversion, AI-enhanced thermal management, and advanced safety systems into a single factory-integrated solution. Its compact design, plug-and-play installation, and remote monitoring capabilities make it an ideal choice for organizations looking to improve energy efficiency, increase renewable energy utilization, and reduce operating costs.

Whether deployed for commercial solar energy storage, industrial load management, EV charging infrastructure, or critical backup power, the Sungrow PowerStack ST455kWh-110kW-4h provides a reliable, scalable, and future-ready Battery Energy Storage System (BESS) for modern energy applications.

Product User Manual & Datasheet

Warranty

Typical commercial warranty offerings are :

• 10-year product warranty (varies by region and distributor)
• Optional extension to 15–20 years
• Performance warranty based on retained battery capacity

Always confirm the warranty with the local Sungrow distributor, as terms vary by country and project.