Growatt GROWATT MOD KTL3-HU is a three-phase grid-tie inverter, designed for stable operation with the grid and flexible PV system design on roofs of various orientations. Its key advantage is the three MPPT - independent tracking strings allow better utilization of energy gains when some modules operate in different directions or periodically enter shade, without pulling down the entire string.
High European efficiency translates into real energy production under typical climatic conditions in Poland - not only under ideal sunny conditions, but also with variable temperature and irradiance.
On a daily basis, you'll appreciate the convenient online monitoring - communication via WiFi or Ethernet (depending on the module) and viewing in the ShinePhone app facilitate diagnostics and control of the system's operation. The series offers comprehensive safety features and a complete certification package required for grid connection. This is a sensible choice for demanding residential installations as well as small and medium-sized commercial properties, where reliability and easy service support matter.
Ranking
Price offers
| Shop | Country | Price | Per kW | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| www.winkelman-zonnepanelen.nl | Netherlands | 1 219 € net | 81.27 €/kW | In stock | yesterday | Visit shop |
Specifications
Pros and cons
The MOD KTL3-HU series offers native battery-ready support with no external backup module required - compatible with APX HV batteries ranging from 5 to 30 kWh. Hardware-level grid-to-offgrid switching is implemented at the hardware level, reducing the total cost of future energy storage expansion.
The rated European efficiency of 98.1% (peak 98.6%) places the series above the typical median of ~97.5-98.0% for three-phase grid-tie inverters in the 10-15 kW range. This translates into measurably higher annual energy yield under the variable irradiance conditions characteristic of the Polish climate.
The series includes at no additional cost: AFCI protection (arc-fault circuit interruption), Type II DC- and AC-side SPDs, and an IP66-rated enclosure providing full dust-tightness and protection against heavy rainfall. Competing products in this price segment frequently charge extra for AFCI or do not offer it at all.
Natural convection cooling eliminates all moving mechanical parts, reducing failure risk and operating noise to 0 dB (no fan noise). For residential installations located near occupied rooms, this provides a tangible benefit to occupant comfort.
Inverters in the MOD KTL3-HU series carry TÜV Rheinland validation, independently confirming that the declared efficiency parameters meet third-party laboratory test results. This certification is required by many insurers and is viewed favorably during commercial installation audits.
Growatt does not appear on the BloombergNEF Tier 1 bankable manufacturers list (confirmed by manufacturer data: tier_1_bankable: false). For bank-financed or leased installations, financial institutions may require an inverter from a Tier 1-listed manufacturer (e.g., SMA, Fronius, Huawei), which narrows the available project financing options.
The standard warranty is 5 years, with a paid extension available to 10 years. By comparison, SMA and Fronius both provide 5 years as standard with a 10-year extension at a comparable cost, while Huawei's premium segment includes 10 years as standard. For commercial installations with a projected payback period of more than 7 years, this represents a tangible risk factor.
Independent analyses and installer feedback indicate warranty claim processing times of 23-40 business days, whereas premium manufacturers (Fronius, SMA) fulfill replacements via advance replacement programs within 5-10 business days. For commercial facilities operating under SLA agreements, this is a significant operational disadvantage.
Alternatives
About the GROWATT MOD KTL3-HU series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.