Lightning Solar & Electrical

SunGrow Inverter Review

CEC accredited installer
enphase silver installer
Sunpower authorised partner
solarquotes platinum badge
CEC approved retailer

SunGrow Inverter Review:
Is It Crap, Or Better Than Fronius?

sungrow review

Looking back over the past few years it’s safe to say that Sungrow has seriously grown on me. Not only because we’ve been selling more of them, but actually because of the things I’ve seen Sungrow do, and the service that they provide. 

You know, if i’m going to be completely truthful I was one of those people who tried to stay far away from cheap ‘chinese’ solar products that caused more trouble than it’s worth.

Of course, we Australian’s have always had this stigma about Chinese products and that if they do come from China, they must be ‘crap’. 

However, from experience and working with installing these products every day… Well, I’m here to burst your bubble. Believe me, it shocked me as well. 

During this Sungrow review you are probably going to realise that they could just be one of the best inverters in the industry and I’ll go into details why later on down the page. 

Yes, I know… The obvious question. Which is better, Sungrow or Fronius? I can’t just give you a straight answer on that, instead I’ve written a guide on Fronius vs Sungrow vs Growatt here

So let’s jump straight in to find out everything there is to know about Sungrow solar inverters, and if they are worth buying or just some cheap chinese crap!

Lastly, if you’re interested in Sungrow then don’t hesitate to get a solar proposal from one of my solar engineers (We don’t do ‘cookie cutter’ quotes, instead we design bespoke systems tailored around your roof, budget and goals for going solar).

You can request a chat to see how one of our solar design engineers would use a Sungrow inverter to optimise your system here

Table Of Contents

Sungrow head quarters and factory

Company History

Established in 1997, Sungrow is a Chinese company that mainly focuses on inverter production for the solar industry. They are also known for some wind production and commercial energy storage systems so have a big part to play in the renewable industry. 

They moved into the global solar race in 2006 and have been non-stop growing since. In 2018 they opened their first factory outside of China which was based in India instead. They also announced in 2020 that they have a target to “source 100% renewable energy by 2028”.

How Long Have They Been Around?

Sungrow has been around 24 years and operates in over 150 countries worldwide. I always think this is an important question to ask. Especially for products that offer a long lasting warranty like Sungrow. 

The reason being is that it can give you an insight into if they will be around for another 10-15 years. Obviously with the way that the world is moving and climate change, it would seem that renewables are on a continual up. 

For me being around for 24 years also is a fantastic sign that the company is doing a great job at what they do. 

Do Sungrow Have Offices In Australia?

Yes, Sungrow has actually been around in Australia since 2012 which is why they are easily one of the most popular solar inverters in Australia today. This is always important because of claiming warranties and being able to claim the correct support if you need it.

Of course, it’s much better for Australian homeowners to have access to an office inside Australia. 

Sungrow actually have one of the best support teams...

Speaking of which, from my experience, Sungrow has (arguably) one of the best support services for inverters in the industry. I’ve both heard and seen a lot of stories about other inverter companies not providing support as good as Sungrow. 

Any issues that you have, you can easily speak to their support team in Sydney. They can help you get it replaced, fixed or whatever needs to be to be done. 

If you’ve had a good or bad experience with Sungrow’s support, please share with everyone below in the comments. 

Types Of SunGrow Inverters

Sungrow residential inverter

SunGrow is offering a fantastic residential inverter that’s a frightening rival for Fronius.

Coming in sizes of 2kW to 20kW you can really optimise on your output with this inverter. They are offering a high efficiency (which is actually one of the best in the industry) as well as a high DC/AC ratio. 

The iSolarCloud monitoring can help you keep on top of your solar system and ensure there are no issues. It provides fast troubleshooting and real time problem analysis meaning if you have any issues, it will report it straight away.

Key selling points;

  • String Inverter Type 
  • Max. Efficiency 98.4%
  • Max. number of PV strings = 1
  • Night power consumption < 3 W
  • Flexible PV string configurations
  • High anti-corrosion rating at C5
sungrow residential inverter


All in all, I’d say this is one of the best inverters you can buy in the industry for your money. It really gives Fronius a serious threat. In fact, I’m pretty sure they are actually Australia’s second biggest seller… So they are coming in hot. 

Also, if you are looking for single phase then your best product will be the SG3K/3K6/4K/4K6/5K/6K-D, but if you are looking for 3 phase then it will be SG5/6KTL-MT/SG8/10KTL-M.

Sungrow commercial inverter

They also specialise in commercial solar inverters for large scale projects. SunGrow can offer business owners a fantastic and affordable solution. With sizes ranging from 25kW to 100kW you can get a high efficiency system in place with these inverters. 

If your business is looking for something more affordable than SolarEdge or Enphase then this will be the perfect solution.

Sungrow commercial inverter

Key selling points;

  • String Inverter Type 
  • Max. Efficiency 99%
  • Max. number of MPP = 2
  • Night power consumption < 2 W
  • High anti-corrosion rating at C5
  • Active Cooling System

Sungrow hybrid inverter

This little beast is a hybrid and capable of storing power as well as converting it. This can give homeowners a cost effective solution instead of paying out full price for a battery. Hybrids are great for storing a small amount of energy. 

In this case, Sungrow’s SH5K-30 can store up to 3kW which would be suitable for a black-out or something similar. However, this is not capable of supporting off-grid use and wouldn’t be right for it. 

Key selling points;

  • String Inverter Type 
  • Max. Efficiency 99%
  • Max. number of MPP = 2
  • Night power consumption < 2 W
  • High anti-corrosion rating at C5
  • Active Cooling System
sungrow hybrid inverter


This is a great inverter for those who live in remote areas and may find themselves having frequent blackouts etc. However, it’s only good for emergencies not to go fully off-grid. Honestly, going off grid probably isn’t the best idea anyway… I explain why in this powerwall battery review here

Which One Comes With A Screen?

We get asked this question a lot by customers. If you are looking for an inverter with a screen you will need the residential inverter or the hybrid. These both come with LED screens for your ease and can make it easier for you to see and monitor your inverter. 

In the past, screens have been seen as a weak point and removed altogether. However, Sungrow has kept the LED screen so that you can monitor and ensure that everything is working ok. 

This is definitely a huge benefit compared to other inverters.

What Warranties Do Sungrow Offer?

As of 2020, SunGrow is now offering a whopping 10 year product warranty for their solar inverters. This is fantastic, and is actually the same as Fronius. It kinda makes you question… If they both offer a similar performance and same warranties… Why is Fronius more expensive? 

Haha, well we do a deep comparison between Fronius and Sungrow here so feel free to read.

What’s The Main Difference Between The Hybrid And String Inverters?

Hybrid can provide emergency backup power if the grid goes out. This is because it stores a small amount of energy using a built-in battery. In this case, it’s 3kW for Sungrow. However, this is a small amount and if you are interested in a solar battery you should look at LG Chem or the Powerwall home battery

Is Sungrow A Big Company?

YES! They are actually the second biggest suppliers of solar inverters in the world…. I think now they are also the biggest supplier in the Americas which includes the USA, Chile, Brazil and so on. 

As of December 2020, Sungrow internationally installed a huge 154 GW of inverters which puts them as one of the biggest solar inverter companies in the world… 

It also makes them extremely reliable and bankable. You can be confident that if you have any issues with your inverters it will get replaced quickly and effectively. With the way that they are growing, rest assured they will still be around in 20-30 years.

SunGrow Solar Inverter Review

Price 9/10

In terms of price, Sungrow is coming in pretty much unbeatable here. I mean, of course you can find cheaper solar inverters, but they will come with a crap performance. For the money that you are paying with Sungrow, you are getting a top performance and a very long warranty.

Warranty 10/10

They offer the longest warranty in the industry along with Fronius and a few others. 10 years is a really good warranty for systems and it’s good to see Sungrow still offering an affordable price with their extended warranty.

Performance 9/10

Sungrow is loved because of how good their products perform. They’re high quality and provide homeowners with a great solution to their solar system. They tower over pretty much all the other inverters and as mentioned above, show a real threat to Fronius. 

Efficiency 9/10

This is also evident in their inverter efficiency. On average solar inverters offer 95% and Sungrow is coming in at 98% or more! That goes to show where they are exactly why they are so popular in Australia.


It does seem that SunGrow have their strengths in string systems. However, it would really be nice to see them branch out into high-end systems with panel optimisers or micro-inverters. Similar to Enphase and SolarEdge all-in-one systems, I think they could do really well. 

It’s something we will have to see in the future. All in all, Sungrow is honestly one of the best inverters you can get in Australia and is well worth your money. 

The figures say it all, second biggest seller. I would be very comfortable with Sungrow in my home so you should be too. Get yourself some quality Jinko panels and you’ll be good to go! 

We’d love to hear your thoughts on Sungrow as a company or as your solar inverter so please share in the comments below 😁.

Share With Your Friends!


Written By:

Luke Cove
Managing Director
Lightning Solar & Electrical

local brisbane cec installer

9 thoughts on “SunGrow Inverter Review”

  1. I have a Sungrow inverter but don’t like the monitoring information that comes with it. Do you know if there is a 3rd party App I can use.

    When I bought my system I was told it did not have a good App.


    1. Hey Gerry,

      We recommend that you look at getting a Sungrow smart meter or looking at a 3rd party called Solar Analytics. This should help provide you with the full visibility that you are looking for.


    1. Hi Christie,

      Single phase would be ok, but 3 phase is better because it splits the solar across all 3 phases. If you need any more help, please don’t hesitate to get in touch with one of my solar design engineers who can help you.


  2. Ha Luke not sure if you can help
    I have a 10.3 solar system with a sun grow 8kwh single phase however it only produces at end of day approx 24kwh the system gets direct /full sun from 8.30am – 4.30pm so I would have thought it would be producing approx 60-64kwh so I’m thinking I must have a dud unless you have any thoughts

  3. I will need two banks of panels, North and west facing yet the residential invertor is single string won’t this affect efficiency?

    1. Hey Paul,

      The residential Sungrow inverter has 2 MPPT inputs ( 2 x strings ) meaning this would be perfect for what you need.

      Feel free to get in touch so we can help you design a system tailored around your home & goals.

  4. Hi
    I want to install 10Kw solar system. The provider suggests I use Sungrow SG8K-D Premium inverter. Does the invertor is good enough and reaches maximum efficiency?

Leave a Comment

Your email address will not be published.