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

Canadian Solar has introduced two new versions of its EP Cube home battery system, which pairs a solar inverter with stackable lithium iron phosphate (LFP) battery modules — a battery chemistry known for being stable and long-lasting. Both are aimed at homes with solar panels who want to add or expand battery backup.

The Single-Phase 2.0 model is built for typical houses. It puts out 10 kW of AC power and can take in 15 kW from solar panels, using four separate MPPTs (the circuits that track and optimize power from different sections of panels). Having four instead of the usual two means more flexibility for roofs with multiple angles or sections that get partial shade. Battery capacity starts small and stacks up to 40 kWh on one base, or up to 80 kWh if two units are linked together.

The Three-Phase Pro is a bigger system, meant for larger homes as well as commercial buildings. It handles more solar input and more power output, and its backup capability is built into the inverter itself rather than requiring a separate box. Storage starts at 10 kWh and can scale up to 40 kWh in one unit, or up to 200 kWh if five units are linked.

Both systems are rated for outdoor installation and come with a 10-year warranty on the inverter and up to 15 years, or 6,000 charge cycles, on the battery modules. For homeowners already considering solar-plus-battery storage, this expands the options for how much backup power a system can hold and how easily it can grow over time.