The Sofar Solar HYD series are three-phase hybrid inverters designed for installations where not only current self-consumption matters, but also real energy management for homes or businesses. These devices combine grid operation with energy storage management, and in certain scenarios, can provide emergency power supply (EPS) - useful when grid stability is an issue. Two independent MPPT inputs facilitate optimising energy yields from panels with different orientations, uneven strings, or partial shading, without complicating the design. The high European efficiency means fewer losses under typical operating conditions, so more energy from the PV system reaches consumption or battery charging. Monitoring is convenient - popular communication options like WiFi are available, along with wired solutions and app integration. The HYD series is compatible with high-voltage batteries, offers comprehensive protection features, meets required grid certifications, and is selected for both residential and small to medium commercial installations.
Ranking
Specifications
Pros and cons
Peak efficiency of 98.2% (per HYD 5-20KTL-3PH datasheet V5.2, 2024) matches the top of the hybrid inverter segment - Fronius Symo GEN24 reaches 98.0% and SMA Sunny Tripower 97.9%. MPPT efficiency of 99.9% minimizes tracking losses even under rapidly changing irradiance conditions.
Emergency Power Supply (EPS) switchover occurs in under 10 ms, enabling continuous operation of sensitive loads during grid outages. Support for up to 20 kW of unbalanced three-phase output sets the HYD series apart from many competitors that are limited to symmetrical power distribution.
The HYD series is priced 15-20% lower than comparable models such as the SMA Sunny Tripower Smart Energy and Fronius Symo GEN24 Plus, while offering similar efficiency and the same European certifications (VDE, CE, RCM). This makes it a compelling option for cost-sensitive installations.
HYD 5-20KTL-3PH models support parallel operation of up to 10 inverters across EPS and AC busbars, enabling microgrid configurations up to 200 kW without an external dedicated controller - a capability rarely found at this price point.
Models from 10 kW upward feature two independent DC ports for high-voltage batteries, allowing flexible storage capacity configuration in 2.5 kWh increments and straightforward system scaling without replacing the inverter.
Sofar Solar Poland's service model requires shipping the unit to a service center (online fault registration, courier pickup within 48 hours). Competitors with mature field service networks - SMA and Fronius - offer on-site technician dispatch, which significantly reduces actual downtime for commercial installations.
Sofar publishes a separate "SOFAR Inverter Model Compatible Battery List", and BMS communication is not guaranteed for batteries outside that list. In a rapidly expanding energy storage market, this limits flexibility in choosing a battery supplier and may complicate future system expansions.
Alternatives
About the HYD series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.