The GoodWe ES G2 series are single-phase hybrid inverters for home installations, designed for maximized self-consumption and intelligent energy flow management between PV, the grid, loads, and storage. In practice, they stand out due to their backup mode with UPS class switching - the backup power engages almost instantly, ensuring stable operation of critical home devices even during grid outages. Additionally, the option for parallel operation facilitates building a more reliable backup power supply in demanding scenarios. Two MPPTs allow flexible handling of strings with different orientations or tilts and minimize losses from partial shading, as each string operates independently. The high European efficiency means better yields under the variable weather conditions in Poland. Monitoring and configuration are convenient thanks to the SEMS ecosystem and grid-tailored communication, while compatibility with a wide range of low-voltage batteries simplifies energy storage expansion. The series is also designed for quick plug-and-play installation and operates quietly without fans.
Ranking
Specifications
Pros and cons
The official GoodWe datasheet confirms a transition time to backup mode of less than 10 ms, which meets the definition of an online UPS. In practice, this means that computers, routers, and other sensitive devices will not restart when the network fails - a significant advantage over standard hybrid inverters that switch to battery power in 20-100 ms.
The measured European efficiency of 96.7% (compared to a maximum of 97.6%) places the ES G2 above the typical threshold of 96% for hybrid inverters in the 3-6 kW class. This translates to a realistically higher annual yield under variable solar irradiation conditions, which are typical for Poland.
The series supports parallel connections up to a total power of 30 kW - a feature rarely found in single-phase inverters of this price range. This allows for the creation of backup power without the need to replace the device with a three-phase model.
ES G2 works with a wide range of low-voltage battery systems: GoodWe Lynx Home U, BYD LVS, DYNESS, Pylontech US, and others (the compatibility list includes over 15 models from 6 manufacturers, as detailed in the Battery Compatibility Overview 2024 document). This gives the installer the freedom to choose a battery system without being locked into a single supplier.
The IP65 enclosure and the complete absence of a fan eliminate noise (0 dB mechanical) and address one of the main failure points in inverters. The manufacturer positions this as a "plug and play" solution with simplified installation, which reduces the typical installation time in a standard single-family home.
The ES G2 architecture only supports low-voltage (LV) batteries (DC voltage range up to approximately 60 V), which excludes compatibility with the rapidly growing segment of high-voltage (HV) batteries (e.g., BYD HVS, Pylontech Force H2), which offer higher round-trip efficiency (~95% vs ~90-92% for LV). Competitors in this price range, such as Huawei SUN2000-6KTL-M2 or SolarEdge Home Hub, offer HV options.
A maximum AC power of 6 kW in a single-phase configuration may be insufficient for homes that also use a heat pump (2-4 kW) and an EV charger (7.4 kW). Three-phase alternatives, such as the GoodWe ET G2 or the SMA Sunny Tripower Smart Energy 10, can handle 10 kW+ without requiring any additional bypasses.
Alternatives
StorEdge AC Coupled Single Phase Inverter (HD‑Wave) – SE3680H / H3680SE
3.68 kW
98.8%
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7.8 kg
13.0 kg lighter
About the GoodWe ES G2 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.