PRE RELEASE. Unlike many opinionated reviews, the Solar Review Inverter Assessment Criteria compares the Growatt MTL-S Inverter against the industries best known specifications.  The result, an inverter review with no room for discretionary bias and the transparency you desire.  

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Make and model:  Growatt MTL-S. 

Variants:  2.5 | 3 | 3.6 | 4.2 | 5 | 5.5 kW.

  VDE certification.

  Lack of Manufacturer Supplied Module-level Optimisation Options or Expanded Monitoring Options.

GREATER THAN 3.3 IS A VERY GOOD SCORE. The following content for the Growatt should be used as a guide only. Individual circumstances and compatibilities should always be taken into account when selecting the right inverter for any given installation. The below Growatt content has been built using the Solar Review Inverter Assessment Criteria 2.0 and above based on available product specifications at the time of writing. 

Design.

Growatt

MTL-S Design; VERY GOOD
  • AC coupled battery compatibility with selected battery technology.
  • New release.
  • Fanless.
  • 2018 DNV GL Top Brand Award.
  • VDE certified.
  • Standard.
  • IP 65.

Features.

Growatt

Growatt-S Features; GOOD
  • 2 MPPTS.
  • LCD graphic interface.
  • Ethernet only.
  • Inbuilt DC isolator.
  • No manufacturer supplied module-level optimisation options.
  • Manufacturer supplied module-level rapid shutdown options.
  • No manufacturer supplied expanded monitoring options.
  • MPPT only.
  • Installer remote access support is rated at - General data configuration.

Performance.

Growatt

MLT-S Performance; SUPERIOR
  • 97% European weighted efficiency.
  • Max temperature range -25°C (-13°F).
  • Min temperature range +60°C (-140°F).
  • Temperature derating 45°C (113°F).
  • Weight 14 kg (30lbs).
  • Noise emission max 25 dB (A).

Guarantee.

Growatt

MLT-S Guarantee; AVERAGE
  • 5-year parts warranty.
  • 5-year service warranty.
  • No authorised installer network.

Software.

Growatt

MLT-S Software; AVERAGE
  • ShineDesign monitoring.
  • iOS & Android app.
  • Alerts & fault diagnosis.

OVERALL.

Growatt

MTL-S Overall; GOOD
  • Design 3.5
  • Features 2.9
  • Performance 4.2
  • Guarantee 2.3
  • Software 2.5

Comparison.

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Avg references industry average specifications.

Outstanding
[ 4.8 - 5 ] The pinnacle of certified specification.
Elite
[ 4.3 - 4.7 ] A rare calibre of technology produced by the industry elite.
Superior
[ 3.8 - 4.2 ] Specifications which are exceedingly superior to that of the industry average.
Very Good
[ 3.3 - 3.7 ] Advanced technology against the industry average.
Good
[ 2.8 - 3.2 ] Better than the industry average is that of which strives a portion better.
Average
[ 2.3 - 2.7 ] A score within this bracket is considered the industry average specification.
Ordinary
[ 1.8 - 2.2 ] Considered below the industry mainstream average.
Poor
[ 1.3 - 1.7 ] There's better, there's also worse.
Inferior
[ 0.8 - 1.2 ] Far below the modern industry average.
Awful
[ 0.3 - 0.7 ] Possesses specifications which are absent or unverified by a certified testing institute.
Avoid
[ 0 - 0.2 ] Unlikely for technology manufactured in the modern era.
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Insight:

How is the Growatt MTL-S score calculated? By utilising the Solar Review Inverter Assessment Criteria V2.3 >

Growatt 2500-5500MTL-S data sheet >

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