The SOFAR PowerMaster is a smart string battery energy storage system for large and medium-sized energy storage power stations, utilities and big industrial sites. It comes in a standard 20-foot high container holding up to 3.44 MWh of LFP lithium battery storage in 10 battery clusters of 344 kWh. On the AC side it connects to a 3.44 MW smart string energy storage converter and a medium-voltage transformer to form a complete, low-cost, high-efficiency storage plant.

Key features

• Large capacity: up to 3.44 MWh in one 20-foot container; two containers can be joined into a 40-foot unit to save space
• Modular design: 10 clusters of 344 kWh that can be added or removed as needed; modules can be swapped on site for fast maintenance
• Cluster-level control: each cluster can connect to its own 215 kW PCS, getting the most charge and discharge from every battery cell
• Air-liquid hybrid cooling: even cell temperatures, longer battery life and anti-condensation design
• "3+2" safety system: cell-level gas fire protection, cabin-level gas fire protection and water fire fighting, plus 10 explosion relief vents and combustible gas exhaust
• Long life: LFP cells rated for 10,000 or more cycles
• Tough enclosure: IP55 container, C4 anti-corrosion grade, −30 °C to +55 °C, up to 4,000 m altitude

Technical specifications

Applications

Utility-scale energy storage power stations, solar and wind farms, grid support, and large industrial sites.