The Deye SUN Microinverter G/G2 series are grid-tie microinverters designed for per-module operation, enabling each panel to function independently and providing enhanced yield stability in practice. A key advantage is the multi-string MPPT, featuring multiple independent trackers that effectively utilize rooftops with different orientations and minimize losses due to partial shading or uneven panel soiling. High European efficiency translates to significantly better real-world energy production under typical Polish installation conditions, not just in the lab.
Daily operation is aided by modular monitoring and WiFi communication, facilitating quick diagnostics and control via an app. The construction is designed for outdoor mounting - a reinforced enclosure and microinverter-standard protections enhance safety and reliability. The G/G2 series is an excellent choice for residential and small commercial installations, particularly where project flexibility and clear monitoring of each panel matter. The manufacturer offers a 10-year warranty and confirms compliance with European grid connection standards.
Ranking
Specifications
Pros and cons
The flagship models from the G/G2 series (e.g., SUN1300G2) are equipped with 4 independent MPPT trackers that can support up to 4 panels simultaneously. This is a significant advantage over microinverters with a single MPPT - shading on one panel does not affect the production of the other three.
The declared tracking efficiency of >99% and the maximum conversion efficiency of up to 96.5% place the G/G2 series in the upper range of microwave power converters available in Europe between 2020 and 2022.
The IP67 enclosure provides complete protection against dust and immersion in water - a higher level of protection than required for typical roof installations (IP65). The operating temperature range of -40°C to +65°C ensures reliability in the Polish climate without the need for additional protection.
The built-in Wi-Fi module allows for tracking production at the level of each panel from a mobile app. This reduces diagnostic time from hours to minutes compared to monitoring at the string level.
The declared noise emission level of ≤25 dB is below the threshold of human audibility in a typical home environment (~30 dB), which eliminates any potential annoyance during installation directly next to a window or on a patio.
The G/G2 series was discontinued in production no later than 2022 and replaced by the G3 and subsequently G4 (SUN-M60/80/100G4-EU) generations. New units are practically unavailable for distribution, and the availability of original spare parts and service support from Deye for this generation is limited.
The G/G2 architecture was designed for modules up to approximately 400 W (60-72 cells). Modern premium panels (550-700 Wp, half-cut, large formats) exceed the nominal input ranges of this series, making it impossible to match them with the current module offerings without over-sizing.
Deye offered a 10-year warranty on the G/G2 series, while leading microinverter manufacturers (Enphase IQ8, APsystems EZ1) offered warranties of 25 years. This difference is particularly significant when calculating the total cost of ownership (TCO) for installations with a 20-25-year lifespan.
Alternatives
About the SUN Microinverter G/G2 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.