When the requirement for a three-phase residential inverter option exists, options which once appeared bountiful, have reduced exponentially. If shopping at the more affordable end of the spectrum, the odds of reliability have reduced even further. Que the Sungrow KTL-MT range. Where does this new release inverter sit within the three-phase buyer’s spectrum?

.Make and model:  Sungrow KTL-MT.

Variants:  5 | 6 | 8 kW.

  Affordability, Design.


Although not a household name, Sungrow within the solar industry is a big name. For the best part of a decade, Sungrow has been one of the largest manufacturers of solar inverter technologies internationally. Therefore, when a company with such industry dominance releases a new residential three-phase inverter as in the Sungrow KTL-MT range, a second look is always worthwhile. 


When it comes to design, one can be confident that the reduced capacity Sungrow SGKTL-MT 5 / 6 & 8 kW range, a variant of the Sungrow SG12KTL-M which won the prestigious All Quality Matters Award by TÜV Rheinland 2018, are built to the same robust specifications.

Almost identical to the award-winning 12kW variant, the Sungrow SGKTL-MT 5 / 6 & 8 kW range boasts a modern fanless design encompassed in a high-grade aluminium die-cast housing built to ensure safe, stable operation in diverse environments. 

Sungrow SGKTL data sheet >

Sungrow KTL Image


SGKTL-MT - Design
  • AC & DC coupled battery compatibility with selected battery technologies.
  • New Release.
  • Fanless.
  • All Quality Matters Award TÜV Reihnland 2018.
  • TÜV Reihnland certified.
  • Inspiring.
  • IP 65.


A mixed bag of features when comparing against the industries best, however, the suite of features within the Sungrow SGKTL-MT range is enough for most residential end-users with options for advanced monitoring insight and reliability and wireless communication.

Potentially the greatest attribute which often goes noticed for many until an issue arises is the availability of remote operational parameter adjustments should it be required. Such has been long desired by installers to ensure more significant end-user support and minimise system downtimes through a multitude of variable system settings.

Sungrow KTL Image


SGKTL-MT - Features.
  • 2 MPPTS.
  • LED & APP interface.
  • WiFi and ethernet only inbuilt.
  • No manufacturer supplied module-level optimisation options.
  • No manufacturer supplied module-level rapid shutdown options.
  • Manufacturer supplied expanded monitoring options.
  • MPPT only shadow management.
  • Installer remote access support - Operational parameter adjustments.


Admirable performance attributes exist within the Sungrow SGKTL-MT range in every facet. Each key quality rates as superior amongst the industries best specifications.

Most notably is the light weight for the technology at hand and an outstanding European weighted efficiency up to 98% in the 8kW variants (5kW – 97.6%).


SGKTL-MT - Performance
  • 98% European weighted efficiency.
  • Temperature range of -25°C (-13°F).
  • Temperature range of +60°C (140°F).
  • Temperature derating of 45°C (113°F).
  • Weighs 20kg (44 lbs).
  • Noise emission 30 dB (A).


In line with the current industry average is the Sungrow SGKTL-MT ranges base manufacturer guarantee. A most disappointing element within a surprisingly superior inverter technology. The upside, however, extended warranty options available for purchase through Sungrow prove inexpensive and well worth the upgrade for up to 10-years additional manufacturers support.

Sungrow KTL Image


SGKTL-MT - Guarantee
  • 5-year parts warranty.
  • 5-year service warranty.
  • No authorised installer network.


Reinvented in 2019, Sungrow’s web-based monitoring software for the Sungrow SGKTL-MT range, iSolarCloud presents a clean user interface with detailed performance analysis and ease of access to service notifications. All of which contribute to a more insightful and enjoyable user experience.

Sungrow KTL Image


SGKTL-MT - Software
  • iSolarCloud monitoring portal
  • iOS & Android app.
  • Alerts & fault diagnosis.


Priced at the more affordable end of the solar shoppers buyers spectrum, value for the technology at hand within the Sungrow SGKTL-MT range ranks as Exceptional. 

Sungrow KTL Image


SGKTL-MT - Affordability
  • Very Good technology score.
  • 5kW approx for $1400 USD ex.


Considering all criteria, the Sungrow SGKTL-MT range is an overall Very Good three-phase solar inverter technology in a category where very few good inverters exist.

Forget manufacturing origin stereotypes and strongly consider the Sungrow SGKTL-MT range when selecting a three-phase inverter. Key elements essential to most general operation scenarios outrank that of many, especially in Performance, Design and Software. One would be hard pressed to find better value for the technology at hand in an expensive residential manufacturing line. 


SGKTL-MT - Overall
  • Design 4.4
  • Features 3.8
  • Performance 4.2
  • Guarantee 2.3
  • Software 3.5
  • Technology 3.7
  • Affordability 4.3


How was the score for the Sungrow SGKTL calculated? By utilising the Solar Review Inverter Assessment Criteria V2.3 >


  1. Can you advise if the Sungrow SG5KTL-MT Inverter is Battery Compliant? I Haven’t been able to find any information regarding this point. Thanks

    • This particular make is compatible with AC Coupled batteries such as Tesla Powerwall 2 (AC coupled batteries have a battery inverter integrated). If you are searching for a three-phase DC-coupled solar & battery inverter please consider the following; Huawei SUN2000-M0, Goodwe ET, Fronius Symo Hybrid or GEN24. All the best in finding the right solution!


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