Growatt SPE HVM-G2 series are single-phase hybrid inverters designed for grid connection and battery storage integration - making them suitable for both autarky and backup power scenarios. A key feature of this series is the dual output for smart load management and two AC inputs with an automatic transfer switch, facilitating integration with generators and enabling prioritized power supply to selected circuits. Two independent MPPT channels allow optimized operation of two PV strings independently - a significant advantage with panels of varying orientations or seasonal shading. The high European efficiency translates into better energy production under typical climatic conditions in Poland, beyond just laboratory peak performance. Remote monitoring operates via WiFi or 4G and is supported by the PVkeeper platform for local activation. The series is compatible with low-voltage batteries (lithium and lead-acid types), features declared CE certification, and comes with a standard manufacturer's warranty of 5 years in the market.
Ranking
Specifications
Pros and cons
Two separate MPPT inputs with a maximum DC input voltage of 550 V allow for independent optimization of two separate PV strings, even if they have different orientations or are subject to asymmetrical shading - a significant advantage over single-MPPT inverters, where a shaded string can reduce the overall system output.
The built-in transfer switch on two AC inputs allows for direct integration of the generator without the need for an additional ATS (Automatic Transfer Switch), while the dual output enables prioritization of selected circuits (e.g., refrigerator, lighting) in EPS (Emergency Power Supply) mode - a feature not typically offered in this price range, where most competitors only provide a single backup output.
Up to 9 units of the HVM-G2 power inverters can be connected in parallel, achieving a power output of up to 54 kW in single-phase or three-phase configurations - offering significant flexibility when expanding a prosumer installation in a commercial building without replacing the inverter.
The inverter supports both low-voltage batteries (48 V), such as LFP (e.g., Growatt ARK 2.5L, Hope), as well as lead-acid and gel batteries - offering a wider range of storage options than inverters that require high-voltage systems (>100 V), which makes it easier to modernize older installations.
The built-in WiFi/4G communication module (without the need for an additional gateway costing approximately 100-200 PLN) and the PVkeeper platform allow for local deployment without relying on the manufacturer's cloud - which is particularly beneficial for installers who want to maintain independence from external servers.
Growatt is not listed on the BNEF Bankable Inverter Manufacturers list (Sungrow, Huawei, and SolarEdge are the leaders), which could be a formal obstacle in projects financed by banks or infrastructure funds that require components from manufacturers on the "bankability" ranking.
The standard manufacturer warranty is 5 years, while Sungrow offers 10 years as standard, and SolarEdge offers 12 years. For installations with a projected lifespan of 15-25 years, this requires purchasing an extended warranty or accepting a higher risk of service costs after the initial warranty period expires.
Independent sources (igrowattinverter.com, solartechonline.com) indicate that warranty claim processing times range from 23 to 40 days, which is significantly longer than the 7-14 days declared by premium manufacturers (Fronius, SolarEdge). For backup power installations, this could mean a multi-week interruption in UPS functionality.
Alternatives
About the SPE HVM-G2 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.