Chinese-Canadian PV manufacturer Canadian Solar has presented two new versions of its EP Cube storage solution. The product range offers all-in-one residential energy storage solutions that integrate a hybrid bidirectional inverter with modular LFP battery technology.
“The EP Cube Single-Phase 2.0 system provides 10 kW AC and 15 kW DC output in a more compact form factor,” a company spokesperson told ESS News. “Unlike typical market solutions that offer only two MPPTs, this system integrates four independent MPPTs, enabling greater design flexibility for complex roof configurations and improving energy harvest under shaded conditions.”
The spokesperson said the EP Cube Three-Phase Pro increases AC output to 20 kW for larger residential and C&I applications. The system integrates the backup port into the inverter, eliminating the need for a separate smart gateway, and supports up to five units in parallel for a combined 100 kW of AC output, 120 kW of PV input and 200 kWh of storage capacity.
The EP Cube Single-Phase 2.0 system features a modular design to enable flexible capacity stacking. Individual battery modules have a nominal capacity of 5 kWh and weigh under 42 kg. It can scale up to 40 kWh using eight stacked battery units on a single base. For properties demanding higher capacities, installers can connect up to two full units in parallel, bringing total storage capacity up to 80 kWh.
The integrated hybrid inverter includes 4 maximum power point trackers (MPPTs). Each tracker allows an input current up to 18 A and a short-circuit current of 25 A, processing a maximum input voltage of 600 V DC. The system supports a maximum combined PV input power of up to 15 kW. The inverter achieves a maximum efficiency rating of 97.60% and a European efficiency of 97%. The system carries an outdoor-ready protection rating – IP65 for the inverter housing and IP67 when the battery modules are stacked together.
As for the Three-Phase Pro, system capacities begin at 10 kWh, using two modules, and can scale up to 40 kWh within a single stacked footprint utilizing eight modules. For higher-capacity demands, up to five units can be linked in parallel, unlocking an expansive total system storage capacity of up to 200 kWh.
To support larger commercial solar arrays, the Three-Phase Pro inverter accepts a maximum PV input power of 24 kW and features 4 MPPTs. Each tracker can accommodate high-power, modern PV modules with an operating current profile of up to 17 A and a short-circuit threshold of 24 A, operating across a wide DC voltage window up to 1,000 V.
On the grid side, the system provides a continuous three-phase output power of 20 kVA (at 400 V AC), delivering up to 28.9A of continuous current per phase. For outdoor placements, the system carries an IP65 protection rating for the main inverter assembly and an IP67 rating for the tightly locked LFP battery stack.
For both products, Canadian Solar provides a comprehensive product warranty package, offering a 10-year warranty on the inverter unit and up to 15 years or 6,000 cycles on the LFP battery modules.
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