A hybrid inverter performs all the functions of a traditional PV inverter — converting the direct current generated by solar panels into alternating current for household use — while also adding the ability to manage an energy storage system by communicating with batteries through dedicated ports (CAN/RS485).

Compared with a traditional inverter, it offers three key advantages: maximized self-consumption, as excess solar energy is not exported directly to the grid but stored for use during non-sunlight hours; partial or full energy independence, with the ability to operate in off-grid mode during blackouts thanks to the integrated changeover switch with a transfer time of less than 10 ms; and economic optimization, as the AI-EMS automatically adjusts charging and discharging according to time-of-use tariffs, helping reduce electricity costs.

Yes. The Flexi 3.0 Three-Phase 36-50kW is certified according to European grid connection standards, including EN50549-1 and C10/C11, which are the standards required by the GSE (Gestore dei Servizi Energetici) for access to Italian state incentives, including net metering.

It also complies with VDE-AR-N4105 and VDE0126 certifications, which are recognized in Italy, as well as IEC62109-1/-2 safety standards. The inverter also integrates anti-backflow protection, an essential function for users participating in net metering mechanisms: without it, energy fed into the grid could not be accurately measured. For final confirmation of compatibility with a local distributor, it is always recommended to check with the installer.

The main difference lies in power output and system sizing: the 20-30kW models are designed for high-end residential applications and small commercial businesses, while the 36-50kW models are clearly positioned for light commercial use and medium- to large-scale energy storage applications.

From a technical perspective, the 36-50kW models feature 4 MPPT trackers with 8 strings, a battery current of up to 120 A, and a maximum charge/discharge power of 60 kW.

By contrast, the 20-30kW models offer 2 MPPT trackers with 4 strings, a maximum battery current of 60 A, and a maximum charge/discharge power of 30 kW.

The difference is also reflected in size and weight: the 36-50kW models (867 × 715 × 306 mm, 81 kg) are significantly larger and heavier than the 20-30kW models (558 × 535 × 260 mm, 29-36 kg).

Both ranges support lithium, lead-acid, and sodium chloride batteries with a voltage range of 150-800 V.

The fundamental difference lies in the presence or absence of a battery port and energy storage function: the GONEO string inverter (Flexi 3.0 Three-Phase - PV String Inverter) only converts DC energy from solar panels into AC energy and does not manage batteries. The hybrid inverter (Flexi 3.0 Three-Phase - Hybrid Storage Inverter) adds the ability to connect and manage an energy storage system.

The string inverter is the right choice for users with an existing PV system without storage who do not plan to install storage in the future. It focuses on maximizing power generation with high MPPT efficiency (>99%) and stable output up to 60 kW.

The hybrid inverter, on the other hand, is a complete solution for users who want to build an integrated energy system. It manages PV, batteries, and loads in a coordinated way, with backup functionality and tariff optimization. In short: the string inverter is a pure converter, while the hybrid inverter is a true energy manager.