Ginlong Solis S6-EH3P30K-H-LV

The S6-EH3P-H-LV series features two independently controlled battery charging/discharging ports, each with a current capacity of 70A+. This allows you to connect two separate battery packs (e.g., from different manufacturers or with varying charge levels) and gradually expand your storage capacity without needing to replace the inverter - a significant advantage over most competitors in the commercial class, where a single port is the standard.

The inverters in this series can be connected in parallel to a maximum of 6 devices, achieving a total AC output of up to 180 kW from a single point. This provides the scalability typical of C&I systems without the need for a dedicated transformer or network topology changes - a significant advantage over single-phase hybrid inverters and inverters without parallel stacking functionality.

Low-voltage architecture (around 48V) provides access to a wide range of energy storage systems (such as Pylontech, BYD, Dyness, and Felicity, available in Poland at prices lower than HV systems). The Solis Battery Matching compatibility list (version 2.0/2024) includes dozens of battery manufacturers, which reduces the risk of vendor lock-in.

Ginlong Solis has maintained its status as a Tier 1 bankable inverter manufacturer, recognized by Bloomberg NEF since many years (verified in Q1 2025), which means that its inverters are accepted by banks that finance PV projects. The company has been operating since 2005 and is the third-largest inverter manufacturer globally, ensuring real availability of service and spare parts throughout the warranty period.

The series offers features such as UPS-level backup mode (switchover time <20 ms), prime power from a generator, and operation in unstable grid conditions. These features are rarely found together in three-phase hybrid systems without a significant price increase - making them particularly valuable for Polish installations with frequent voltage drops or those located outside the SN grid.

In low-voltage systems (around 48V DC), an additional DC/DC conversion stage is required between the PV array and the battery, which reduces the charging/discharging efficiency to approximately 90-93%. High-voltage variants (HV, 100-800V) achieve 94-97% round-trip efficiency (data: AlphaESS, SRNE, Felicity ESS 2024). With an intensive daily storage cycle (e.g., 20 kWh/day), the difference of 3-5% represents a real loss of approximately 200-350 kWh per year.

The discharge current of 70A at the port requires DC cable cross-sections of at least 35-50 mm² of copper (according to IEC 60364-5-52) on the battery side, which increases the cost and complexity of the wiring compared to HV systems, where at the same power, the current is several times lower and cross-sections of 6-10 mm² are sufficient. In installations with long cable runs, this cost can be significant.