Hybrid Inverter/Charger Easun Power TWIN Solar - designed for installations where flexible energy management and reliable backup power are essential. In practice, this enables seamless switching between solar panels, the grid, and energy storage systems, emphasizing self-consumption and powering loads even during grid outages. Key features include two independent MPPTs, simplifying operation with panels of different orientations or under partial shading conditions - boosting energy yield without complicating the design. High European efficiency translates to better energy production in typical weather conditions in Poland, not just under ideal sunny conditions. Additionally, features like WiFi monitoring (often with additional communication ports for integration), an easy-to-use menu, and an event log simplify diagnostics. The series is compatible with energy storage systems (including BMS communication in certain versions), complemented by comprehensive safety features and manufacturer guarantees. A smart choice for homes, small businesses, and facilities requiring backup power.
Ranking
Specifications
Pros and cons
The TWIN series features two independent MPPT controllers (with 11-12 kW models providing up to 150 A per string), allowing for the use of PV strings with different orientations and inclines without interference - a significant advantage over inverters with a single MPPT, especially on typical pitched roofs.
The TWIN series devices support native communication with popular LiFePO4 battery packs (Pylontech, JK BMS, Jikong, Daly), eliminating the need for additional adapters and enabling precise charging management - which is crucial when building a battery storage system.
The built-in Wi-Fi module, with access to the mobile app, allows for remote monitoring of parameters in real-time without the need to purchase a separate data logger, which reduces the total installation cost by approximately 200-400 zł compared to systems that require an external module.
Hybrid on-grid/off-grid architecture with UPS functionality (switching time of less than 20 ms in most models of this class) provides power to sensitive devices (e.g., NAS, CO pump) during network outages - without the need to install a separate off-grid inverter.
The models in the TWIN series support the connection of up to 6 units (single-phase or 3-phase), allowing for system expansion without replacing the inverter - a practical advantage for facilities with increasing power requirements.
Easun Power is not listed on Bloomberg NEF's Tier-1 inverter list (unlike Growatt, Sungrow, SMA, and Fronius). The brand is also recognized by some DIY solar communities as a rebranded version of the Voltronic/SRNE platform, which suggests limited transparency in its own R&D and potentially a shorter firmware support cycle.
On Trustpilot and the DIY Solar Power Forum, users report difficulties in contacting customer service, a lack of response to email complaints, and delayed deliveries. Growatt, a direct competitor in the same price segment, consistently receives higher ratings for its after-sales service in independent installer rankings (Clean Energy Reviews 2025).
Publicly available resources lack a VDE-AR-N 4105 or G99 certificate specifically for the TWIN series (unlike SMA and Fronius, which hold these certificates for each model individually). This can complicate grid connection for some OSDs in Poland or Germany.
Alternatives
About the TWIN Solar Inverter/Charger series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.