Canadian Solar unveils new EP Cube systems featuring higher power, scalable storage

Canadian Solar has introduced two new versions of its EP Cube energy storage solution, targeting residential and commercial and industrial (C&I) markets with enhanced power and scalability. The new EP Cube Single-Phase 2.0 and Three-Phase Pro systems integrate hybrid bidirectional inverters with modular lithium iron phosphate (LFP) battery technology. These releases signify a push toward higher efficiency and design flexibility in the distributed energy storage sector, offering significant capacity increases and simplified installation for complex energy environments.

The EP Cube Single-Phase 2.0 system is designed for residential use, providing 10 kW AC and 15 kW DC output in a compact form factor. A key differentiator for this model is the integration of four independent Maximum Power Point Trackers (MPPTs), which Canadian Solar notes is double the market standard of two. This configuration allows for greater design flexibility on complex or shaded roofs, maximizing energy harvest. The system uses modular 5 kWh LFP battery units weighing less than 42 kg each, allowing for capacity stacking up to 40 kWh on a single base or 80 kWh when two units are connected in parallel.

For larger residential and C&I applications, the EP Cube Three-Phase Pro increases AC output to 20 kW and integrates the backup port directly into the inverter, removing the need for a separate smart gateway. This system is highly scalable, supporting up to five units in parallel to achieve a combined 100 kW of AC output and 200 kWh of storage capacity. The Three-Phase Pro inverter features four MPPTs and can handle a maximum PV input power of 24 kW, supporting modern high-power modules with a DC voltage window of up to 1,000 V and an operating current profile of up to 17 A.

Both systems are built for durability and efficiency, with the Single-Phase 2.0 achieving a maximum efficiency rating of 97.60% and a European efficiency of 97%. The hardware features robust environmental protection, including IP65 ratings for inverter housings and IP67 for the locked battery stacks, making them suitable for outdoor installation. Canadian Solar backs these products with a comprehensive warranty package that includes 10 years for the inverter and either 15 years or 6,000 cycles for the LFP battery modules, reflecting the industry's move toward more integrated, long-life storage solutions that meet the growing energy demands of modern properties.