PV Inverters: Only support unidirectional energy conversion (DC→AC), electricity can only flow from the PV panels to the grid/load.

Energy Storage Inverters: Achieve bidirectional energy conversion (DC↔AC), switching between charging (AC→DC) and discharging (DC→AC) modes.

PV Inverters: The core task is MPPT (Maximum Power Point Tracking) and DC-AC conversion, maximizing the power generation efficiency of the PV panels.

Energy Storage Inverters: The core tasks are bidirectional conversion + battery management + energy dispatch, precisely controlling charging and discharging power according to EMS commands.

PV Inverters: Primarily have two basic modes: grid-connected and off-grid. They typically stop working during grid failures.

Energy Storage Inverters: Possess multiple operating modes such as charging, discharging, backup power, grid frequency regulation, and peak shaving/valley filling, and can operate independently.

PV Inverters: Based on “Sun Tracking” The core of the system is real-time monitoring of the photovoltaic panel’s I-V curve, ensuring it always operates at its maximum power point.

Energy Storage Inverter: Centered on “dispatch,” it precisely executes charging and discharging power control according to instructions from the upper-level Energy Management System (EMS).

Photovoltaic Inverter: Relatively simple structure, mainly consisting of a DC-AC conversion unit, MPPT controller, and grid-connected protection module; no battery interface is required.

Energy Storage Inverter: More complex structure, requiring built-in bidirectional AC-DC/DC-DC conversion modules, a Battery Management System (BMS) communication interface, bidirectional power switches, and energy flow direction switching devices.

Photovoltaic Inverter: Operates only during daylight hours; power generation is significantly affected by weather and sunlight intensity.

Energy Storage Inverter: Can operate 24/7, unaffected by sunlight, and can charge during off-peak hours and discharge during peak hours.

PV Inverters: Mostly passive follower type, primarily responsible for power conversion and grid connection, with limited grid support capability.

Energy Storage Inverters: Possess active support capability, providing grid services such as frequency regulation, voltage regulation, reactive power compensation, and black start, enhancing grid stability.

PV Inverters: Widely used in various PV power plants (residential, commercial, large-scale ground-mounted power plants), focusing on PV power generation systems.

Energy Storage Inverters: Primarily used in energy storage systems (residential energy storage, industrial and commercial energy storage, grid-side energy storage), microgrids, off-grid power supplies, backup power supplies, etc.

PV Inverters: Relatively simple control, mainly handling unidirectional energy conversion and MPPT tracking, with protection mechanisms primarily focused on grid connection safety.

Energy Storage Inverters: Higher technical complexity, requiring simultaneous handling of bidirectional power flow, battery charge and discharge management, multi-mode switching, and grid interaction, demanding more stringent control accuracy and response speed requirements.

PV Inverters: Relatively low cost, price mainly depends on power rating and MPPT. Number of Circuits

Energy Storage Inverters: Due to their bidirectional design, BMS integration, and higher control precision and protection requirements, their price is typically 1.5-2 times that of photovoltaic inverters.