The Easun Power IGRID-VX-IV series are hybrid on-grid and off-grid inverters, combining self-consumption with the ability to feed excess back to the grid and operation during power outages. They prove effective in residential and small commercial installations where flexible energy management matters as much as traditional grid-tie.
The applied MPPT helps maintain stable string performance in varying sunlight conditions. For more demanding rooftops, it's worth noting that a single tracker often suits simpler layouts-installations with different roof orientations or frequent shading benefit more from additional MPPT, offering greater design flexibility.
This series stands out with the option to operate with or without an energy storage system, along with a BMS communication port, facilitating integration with popular lithium batteries. It features built-in WiFi, a monitoring app, and standard service interfaces. For investors, declared certifications (e.g., CE) and the manufacturer's warranty are also crucial.
Ranking
Specifications
Pros and cons
The IGRID-VX-IV series supports both self-consumption and exporting excess power to the grid, as well as island mode operation during power outages - features that distinguish it from purely on-grid systems without UPS. Importantly, the device can operate without an attached energy storage system, which lowers the initial investment and allows for phased expansion of the installation.
The declared ability to track the maximum power point is 99.9% at an input current of up to 120 A and a DC PV voltage of 120-450 V. The wide voltage range (starting from 120 V DC) means that the tracker operates even in low-string configurations or under limited morning and evening sunlight.
The integrated parallel connection allows for connection of up to 9 inverters (totaling approximately 50 kW), with the option for three-phase operation. In the budget-friendly hybrid segment, most competitors (e.g., Growatt SPF 5000ES) require additional modules or limit parallel operation to 3-6 units.
The RS485 port with the SRNE protocol enables communication with popular LiFePO4 batteries (e.g., JK BMS after proper configuration). The built-in Wi-Fi and dedicated mobile app eliminate the need to purchase external data loggers - this is the standard in this price range.
Within the 5-6 kW hybrid inverter segment with Wi-Fi, BMS (Battery Management System), and parallel functionality, IGRID-VX-IV series models are available at prices significantly lower than comparable models from Deye (SUN-6K-SG03LP1-EU) or Growatt SPH 6000TL3 BH-UP, while offering similar features. This makes them an attractive option for prosumer installations with limited budgets.
Users on the DIY Solar Power Forum (in a thread from 2024/2025) have confirmed a recurring issue: when the PV power exceeds approximately 3.8 kW in export mode, the inverter periodically resets the output power to 0, after which it returns to its nominal value - this cycle repeats every few seconds. This problem does not occur during battery charging, which suggests a fault in the grid-feed section of the inverter, rather than in the DC section.
The VX-IV series uses the SRNE communication protocol (not Voltronic, as in the older SV-IV), which causes communication error #58 with BMS configured for the Voltronic protocol. Users report incompatibility, particularly with the IBattery-EA module, which does not establish a session with the inverter without protocol switching.
A single MPPT (Maximum Power Point Tracking) controller limits the efficiency of installations with a pitched or partially shaded roof. Competitive models in a similar price range (e.g., Deye SUN-6K-SG03LP1-EU) offer 2 independent trackers, which, in complex panel configurations, can translate into a significantly higher annual energy yield.
Easun Power does not appear in the tier-1 rankings of BNEF or Clean Energy Reviews (2025). In comparison to Growatt and Deye, the network of authorized service centers in Poland and Europe is limited, which, in the event of failures outside of the warranty period, extends repair times and makes it more difficult to obtain original spare parts.
Alternatives
About the IGRID-VX-IV series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.