Lots of computer parts have names that require a bit of technology knowledge to understand exactly what it does (e.g. solid state drive) but in the case of a power supply unit, it's pretty obvious. It's a unit. It suppli.
[pdf] Huawei’s energy storage power station equipment is characterized by 1. advanced technology and innovation, 2. high efficiency and reliability, 3. versatility in applications, and 4. strong integration with renewable energy sources.
[pdf] Wind and solar energy storage equipment refers to systems designed to store energy generated by wind turbines and solar panels for later use, ensuring reliability and efficiency. This equipment commonly encompasses batteries, pumped hydroelectric storage, and flywheels.2.
[pdf] 
