TCL SunPower’s home ESS’s storage capacity can be scaled up to 30 kWh by connecting 6 battery units vertically
This system carries a warranty of up to 10 years
The company is currently accepting orders in Italy and France for this product
TCL SunPower Global, formed through the merger of TCL and SunPower, has launched its latest SunPower Energy Storage System (ESS), targeting European prosumers.
The company says that this system, featuring vertically stacked 5 kWh lithium iron phosphate (LiFePO₄) battery units, topped with a hybrid inverter, supports SunPower’s PV modules. Without disclosing the capacity (AC) of its inverter, the company’s press release states that the system’s energy storage capacity (charging/discharging) can be scaled up to 30 kWh, according to the prosumer’s desired load capacities and backup durations, by connecting 6 units. It switches to backup mode within 10 ms of grid failure or shutdown. Besides feeding home loads, during the sunlit hours of the day, it intelligently utilizes excess solar energy by storing it in the battery banks. It maximizes harvesting of incident electrons to self-consume during peak electricity tariff periods, typically at night and during unexpected grid outages. However, the maximum allowable PV capacity for this hybrid storage system was not mentioned in the company’s press release. Given the complexity of these operational functions, users can install the SunPower app on their mobile phones to monitor and optimize energy usage and savings in real time. It also optimizes state of charge (SOC) and maximizes battery lifecycle by leveraging blended adaptive power algorithms. In addition, the company says that integrating a single brand-based material, such as PV modules, ESS, and an app, makes installation and after-sales service smoother and reliable.
In terms of safety, each battery unit offers a range of safety functionalities, like controlling energy intensity, load shedding, and releasing internal pressure, among others, by automatically sensing thermal anomalies through 8 built-in sensors. The company claims that each cell is wrapped with a glass fiber-based insulating layer, which is ultra-light and offers very low power density along with resistance to potential fire risks. It uses an aerosol-based fire extinguisher to absorb extreme heat and prevent the chemical reaction that causes internal combustion.
TCL SunPower offers up to 10 years of warranty for this ESS. While the company is currently accepting orders in Italy and France, the product is slated for a commercial launch in early 2026 for the rest of the European Union (EU) nations.
