The Sofar Solar HYD EP series is single-phase hybrid inverters, combining grid-connected operation with emergency backup mode. This means you can maintain selected circuits during a grid failure, while also flexibly managing self-consumption at home or for a small business. The devices feature the EPS function with extremely fast switching, along with a robust enclosure with IP65 rating, making outdoor installation straightforward. Two independent MPPTs simplify designing systems with panels across different roof sections and improve energy yield under partial shading. The high European efficiency translates to significantly better performance in typical Polish climatic conditions. Monitoring is available via the portal and app - standard with a WiFi-stick, and communication also includes Ethernet/RS485. The series is compatible with energy storage systems (including low-voltage options) and operates in multiple modes, including export limitation. It meets popular grid and safety standards and offers a 5-year warranty with the option to extend.
Ranking
Specifications
Pros and cons
The Emergency Power Supply switchover time is <10 ms (per the HYD 3000-6000-EP datasheet), which meets the requirements for Class III UPS per IEC 62040-3. By comparison, entry-level hybrid inverters such as the Growatt SPH offer EPS switchover times of 20-30 ms, which can be problematic for refrigerators, compressors, and IT equipment.
A European efficiency of 97.7% (peak 98.2%) positions the HYD EP series above the median for single-phase hybrid inverters in the 3-6 kW class, where typical values range from 96.5% to 97.5%. In climates with a high proportion of partial-load operating hours, this translates into a measurably higher annual energy yield.
A DC battery voltage range of 90-580 V with charge/discharge currents up to 100 A supports both low-voltage (LV) batteries (e.g., GTX 2500/5000 at 48 V) and HV configurations. Parallel connection of up to 4 battery strings allows capacity to be scaled without replacing the inverter - a significant advantage when future system expansion is planned.
The IP65-rated enclosure permits outdoor installation, and the fanless design at operating temperatures up to ~50°C eliminates the typical issues associated with acoustic noise and mechanical wear. Compared to actively cooled models such as the Huawei SUN2000-6KTL-L1, this results in lower long-term failure rates and silent operation for the majority of the year.
Two independent MPPT channels with a permissible DC oversizing ratio of 1.5× (up to 9 kWp on the 6 kW model) allow arrays with modules on multiple roof faces - at varying azimuths and tilt angles - to be designed without mismatch losses. This is particularly relevant in urban installations where a true south-facing orientation is rarely achievable.
The technical documentation specifies a standby power draw of up to 15 W, which amounts to approximately 131 kWh of self-consumption losses per year. Competing products such as the Fronius GEN24 Plus (~6 W) and the SolarEdge Home Hub (~4 W) produce 2-3× lower standby losses - a meaningful difference in systems with low nighttime consumption.
The HYD EP series covers only the 3-6 kW range in a single-phase topology. Homes with demand exceeding 6 kW, or installations requiring phase-load balancing, must migrate to a different series (e.g., HYD-3PH), which necessitates a full system redesign and potential hardware replacement. There is no upgrade path within the same product series.
Alternatives
SUN2000-6KTL-M1 (High current version)
6 kW
97.7%
2
17.0 kg
+3.1 pp efficiency, +1 MPPT, 4.5 kg lighter
About the HYD EP series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.