FoxESS is a manufacturer specializing in solar inverters and battery energy storage systems, primarily offering integrated solutions for residential and smaller commercial PV systems. The company focuses on system-level compatibility: its inverters and batteries operate on a unified platform, without the need for separate manufacturer integration.

Its portfolio includes single-phase and three-phase hybrid inverters, typically in the 3–15 kW power range, as well as LV (low voltage) and HV (high voltage) battery systems. The batteries feature a modular design, typically with 2.5–5.0 kWh module sizes, which can be connected in series to create storage capacities exceeding 5–30 kWh within a single system. HV solutions offer higher efficiency and lower current loads, while LV systems provide simpler, more cost-effective installation.

The systems support self-consumption optimization, timed charge-discharge functions, and backup/EPS operation for selected inverter types. Communication typically occurs via CAN and RS485 interfaces, with remote monitoring provided by the manufacturer's monitoring platform.
The FoxEss solutions comply with European grid and safety regulations and are designed for users seeking an expandable, clearly structured inverter-battery system with a unified manufacturer background.