The Deye SUN-K-G02 series are single-phase grid-tie inverters designed for stable operation in residential and small commercial installations, where high operational reliability and easy diagnostics are key. They feature two independent MPPTs, which facilitate better performance under shading, different roof orientations, or when modules are divided into two strings - the inverter intelligently selects the operating point for each string, minimizing energy losses. In practice, this is aided by high European efficiency, meaning genuinely excellent performance under typical operating conditions, translating to higher annual yields, not just in laboratory tests. The series supports essential features for modern grid connections, including export limitation functionality and grid-supporting modes (VSG). Flexible communication and monitoring options are available for installation control - including WiFi, LAN, and mobile solutions, also with optional modules. The entire package is complemented by required European certifications and a 5-year warranty, making this series a sensible choice for installers and users seeking predictable operation.
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Two independent MPPT (Maximum Power Point Tracking) systems allow for separate optimization of the performance of each panel or group of panels with different orientations. In practice, this reduces energy losses compared to single-phase inverters with a single MPPT, which were the standard in the prosumer segment before 2021.
European efficiency (weighted according to EN 50530, reflecting real solar irradiance conditions) at approximately 97.6% places the series in the upper half of the segment of single-phase grid-connected inverters for prosumer applications, which directly translates into a higher annual energy yield compared to models with efficiency of approximately 96-96.5%.
The integrated Virtual Synchronous Generator (VSG) modes and export limitations to the grid meet the requirements of distribution network operators in the EU without the need to purchase additional modules. The series is ready for typical grid connection conditions for prosumer installations in Poland and other EU countries.
Deye was included in the inaugural list of Tier 1 Cleantech Companies by S&P Global Commodity Insights, which confirms the stability of its supply chain, the availability of spare parts, and a long-term warranty - all of which are crucial for a 5-year warranty and planned operation exceeding 20 years.
The series offers various communication options (WiFi, LAN, optional modules) with support for the SolarmanPV mobile application, allowing installers and users to perform real-time diagnostics and remote access - without the need to purchase a dedicated logger from a specific brand.
The G02 series was first introduced in 2021 and has been superseded by newer Deye generations - G04 and G05 - which offer features such as higher individual power outputs, expanded interfaces, and updated firmware. When installing a new system in 2026, it is necessary to verify the availability of G02 components and to consider the possibility of updating the software for the G02.
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About the SUN-K-G02 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.