The GoodWe EM series are single-phase hybrid (LV) inverters, intelligently managing energy flow in on-grid installations: prioritizing home supply, then battery charging, with excess available for grid export. Depending on the variant, they feature up to 2 MPPT, facilitating the design of rooftop systems with different orientations or partial shading - each tracker optimizes the PV string performance independently. The high European efficiency translates to a significantly better yield under typical climatic conditions in Poland, beyond laboratory settings.
The EM offers features crucial for self-consumption, such as export control (zero export) and rapid switching to UPS-style backup power supply, ensuring critical circuits remain operational during grid outages. Monitoring is conducted via the SEMS app and connectivity options including WiFi or WiFi/LAN, allowing you to view production, consumption, and battery performance. This series is an excellent choice for modern home installations with energy storage, and meets requirements for safety, enclosure integrity, and warranty (standard 5 years, extendable to 10 years under the GoodWe PLUS+ program conditions).
Ranking
Specifications
Pros and cons
The switchover time to backup power is less than 10 ms, which meets the requirements of the UPS class according to IEC 62040. This means that critical devices connected to the system (e.g., NAS, routers, medical equipment) will not lose power during a network outage - the 20 ms threshold exceeds the tolerance of most consumer electronics.
The EM series works with at least 4 different LV battery families, confirmed by the manufacturers: BYD Battery-Box (LVL, LV5.0+), LG RESU (3.3-12 kWh), Pylontech (US2000/US3000/US5000), and Dyness POWERBOX F. This gives the installer the flexibility to choose a storage system without being tied to a single supplier.
GoodWe is listed on BNEF's Tier-1 bankable inverter manufacturers list, which is a requirement for financial institutions to accept their inverters in both residential and commercial projects. The stability of the company, founded in 2010 and listed on the Shanghai Stock Exchange, reduces the risk of lacking after-sales support within a 10-15 year timeframe.
The built-in zero export function allows you to limit or completely block the export of energy to the grid without the need for an external meter. This is particularly important in prosumer installations, where an agreement with the energy supplier (OSD) may restrict the export power or require its monitoring.
Having two MPPT trackers in a 3-5 kW single-phase inverter allows you to connect PV strings with different orientations or exposures without losing efficiency on less sun-exposed sides. In the case of single-phase LV inverters from many manufacturers, the limit is typically 1 MPPT.
The SEMS Portal mobile application (iOS/Android) has an average rating of 3.57 out of 5 in app stores (data: December 2025, ~3900 reviews). Users report issues with login after updates, freezing when viewing monthly charts, and a lack of the ability to filter data by date. Compared to competitors (e.g., Fronius Solar.web, SolarEdge mySolarEdge), the UX remains below market expectations.
The maximum charging/discharging power for the EM series batteries is 2.3 kW, which, when combined with a 5 kW AC variant, means that the inverter cannot simultaneously power the entire house at full capacity and charge the battery at its maximum speed. The competitive ES G2 series (similar price range, same manufacturer) offers a higher charging current.
The standard warranty is 5 years, but extending it to 10 years requires meeting the conditions of the GoodWe PLUS+ program (including registration by a certified installer and a specific period of time since installation). Some competitors in this segment (e.g., SolarEdge, Huawei) offer a standard 12-year warranty or without additional registration requirements.
Alternatives
About the GoodWe EM series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.