Solax Solar Inverters- Independent Review

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Note: Solar Choice is not a solar installer and has no financial or other incentives to promote any product brand over another. 

Overview of Solax – Company History

SolaX Power commenced operations in 2010, headquartered in Hangzhou, China. Solax quickly expanded globally, entering the Australian market in 2014 when they opened an office in Victoria. Solax has 6 global offices and over 500 employees, distributing to 66 countries via 200 distribution channels. This has resulted in over 600 thousand Solax inverters being installed worldwide.

Solax is actively pursuing research and development through its affiliation with Zhejiang University. The university is one of China’s leading research facilities and the only national silicon material laboratory.

A Brief Rundown on Solar Inverters

A solar system’s inverter is the point at which the DC electricity produced by solar panels is turned into grid-compatible AC electricity.

String inverters have traditionally been the standard in the solar industry. They send the power produced by solar panels to a central inverter that changes it from DC electricity to the usable AC electricity that powers homes.

Hybrid Inverters have the same characteristics as a string inverters with the additional feature of a charge controller, which is used to manage a battery system. Charge controllers can also be bought as an additional unit, but hybrid inverters provide the option of an all-in-one device.

Solax Inverter Efficiency

An important aspect of getting the most value out of a solar inverter is choosing an appropriately sized inverter to optimise the solar panel system efficiency. To read about the importance of inverter sizing and system efficiency click here.

Residential inverter efficiency standards are generally 95 to 98 per cent, Solax Inverters either fall into or exceed this standard. The Solax residential inverter range has efficiencies from 97.1% to 98.5%.

Solax Inverter Warranty

In Australia, all CEC-approved Solax inverters come with a 5-year warranty for parts and labour from the date of installation. An additional 15-year extension to the warranty can be purchased.

The standard 5-year warranty is rapidly becoming one of the shortest inverter warranties offered in Australia with many of the growing Chinese companies starting to offer a standard 10-year warranty. As we’ve discussed previously, a warranty is only worth something if the company providing it is still around and there is an accessible route to claiming it if your Solar Installer is no longer around.

Solax Inverter Costs

Solax Inverters are manufactured in China, which means that they will generally be cheaper than European-manufactured competitors.

Indicative pricing

SolaX Inverter ModelIndicative Price Range
SolaX Power X1-Boost 5.0 kW$700 to $1,000
SolaX Power X1-Smart 6.0 kW$1,300 to $1,500
SolaX Power X1-Smart 8.0 kW$1,500 to $1,700

Keep in mind that inverter costs generally only run between 10-20% of your total system, so often it is worth investing in a high-quality inverter given this will have a large impact on the efficiency and performance of your Solar Power project.

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A Full Range of Solax Inverters Available in Australia 

The following Solax Inverters are approved by the Clean Energy Council for the Small-scale Renewable Energy Scheme, which is Australia’s home solar rebate program.

X1 MINI 

The SolaX X1-MINI G3 range of inverters suit customers with small requirements or a limited amount of roof space. The inverters range from a tiny 0.6kW through to 3.6kW which could be paired with a maximum of 4.7kW of solar panels. 

These inverters have a maximum efficiency of 98% which is comparable with the better inverters on the market. Despite the small and lightweight design, the inverters still come with an LCD display to help customers see the real-time performance on the device.

X1 BOOST 

The X1-BOOST inverter is SolaX’s flagship model featuring models with output capacity from 3kW to 6kW. The inverter can be controlled and updated remotely with the SolaX ‘Smart Plug’ which makes maintenance and monitoring easier for SolaX and their customers.

The X1 BOOST is IP66 rated, meaning it can be comfortable installed outdoors with protection from the elements. All models in the range come with 2 maximum power point trackers (MPPTs) which enables your installer to put solar panels on two different roof angles. 

X1 SMART

The X1 SMART series has 3 size options – 6kW, 7kW and 8kW. This model is unlikely to be very popular in Australia which most commonly sees 5kW to 10kW inverters deployed on residential homes.

The X1 SMART has a bulkier and squarer design than other models. It does still feature the touch-screen LCD display which is common to all SolaX’s inverters. The inverters come with IP65 environmental protection rating and 2 MPPTs.

X3 MIC and PRO

SolaX’s 3-phase inverters range from 3kW to 15kW in the MIC series and 8kW to 30kW in PRO series. The 3-phase inverters feature a more impressive maximum efficiency rating up to 98.3% on the MIC series and 98.5% on the PRO series.

One limitation of SolaX’s inverters is that they do not have any options with more than 2 MPPTs (except for 25kW and 30kW options in the PRO series which have 3). That means they are generally only suitable for rooftop installations where the solar panels are going to be installed in a maximum of two different orientations.

The MIC and PRO series are IP66 rated giving them excellent protection against the elements and can be installed indoors or outdoors.

Solax Inverter Specifications

 SolaX Power X1-HybridSolaX Power X3-MicSolaX Power X1-Boost
Inverter TypeHybridStringString
Rated AC Power Output3000W4000W3000W
Maximum Continuous Output Current14.4A6.4A14.3A
Maximum DC Voltage600V800V600V
Maximum Inverter Efficiency97.8%98.3%97.8%
Dimensions with Safety Switch/Connection Unit476 x 464 x 180 mm534 x 419 x 201 mm341.5 x 430 x 143 mm
Weight24kg30kg13.5kg
Warranty5 years5 years5 years
Operational Temperature Range-20°C to 60°C -25°C to 60°-25°C to 60°C
Made inChinaChinaChina

Solax System Monitoring

SolaX Monitoring Dongles

Solax’s Pocket WIFI enables the ability to remotely monitor inverter performance on the entire Solax inverter range. The additional plug-in device allows users to track the performance of their system anywhere in the world.

The software designed to visualise system performance remotely is the SolaX Cloud. The real-time monitoring solution enables the user to see performance metrics and perform inverter maintenance & software updates via the mobile application or website portal.

Read more product reviews from Solar Choice

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Since 2008 our knowledge and sophisticated software has allowed over 300,000 Australian households and businesses to make a well-informed choice on their solar & battery installer.
Jeff Sykes

Reviews from Australians who have installed SolaX Inverters

Rated 3.80 from 30 reviews
13th February 2024
NSW - 2460
6kW system
4.00

Has been a very reliable unit. The lower output of 4.6kw for consumption is a little disappointing.... But I guess we didn't do that research properly The app and monitoring is quite reliable. Doesn't really have. A proper delineation of self consumption versus grid export.... But I think you need an extra drid monitor connected for that.

29th January 2024
QLD - 4074
6kW system
5.00

Very happy with price, performance, and reliability of Solax. After-sales manufacturer service also very good.

6th January 2024
Glenn
-
9kW system
2.00

only lasted 2.3 years cant get anyone to come and fix absolutely *** warranty

28th December 2023
Mark
WA - 6163
6kW system
3.00

Seems ok, should have a monitoring capability to show power generation. It worked once, emailed the rep at Aus Energy Solar Pty Ltd but still not resolved, not impressed

22nd December 2023
Naidu
-
6kW system
4.00

22nd December 2023
Naveen
-
6kW system
5.00

26th October 2023
Julian
NSW - 2444
6kW system
5.00

Nill issues

31st August 2023
Ann
-
6kW system
3.00

12th August 2023
Gengis
VIC - 3500
5kW system
2.00

I planned ahead and got a hybrid inverter so l can upgrade and add a battery system down the track

11th August 2023
David
WA - 6152
6kW system
4.00

Has been good but I dont know where to find my wifi password to access the data it puts out.

7th August 2023
Kerry
NSW - 2212
6kW system
5.00

6th August 2023
Karen
-
6kW system
4.00

2nd August 2023
Leigh
-
10kW system
3.00

11th July 2023
Steve
QLD - 4123
6kW system
5.00

So far all good easy to read

15th June 2023
Joe
-
5kW system
1.00

Poor quality with poor quality service

15th June 2023
Ian
TAS - 7325
4kW system
4.00

Not that happy with connection to my computor for performance reporting - manual reading of inverter screen good

2nd June 2023
Neville
NSW - 2251
10-15kW system
2.00

Inverter does not respond effectively to demand/AC changes.

16th May 2023
Loretta
VIC - 3691
5kW system
5.00

Stopped working in April. While it had apparently ran out of warranty (5 years from manufacture date) they have chosen to replace it and cover some of the electricians costs.

27th April 2023
Paul
NSW - 2333
6kW system
5.00

Seems to be working fine

25th March 2023
Rene
SA - 5163
10-15kW system
5.00

now pretty good but still not finished not solaxs fault All incompetency is Arises Fault stay away from this company

28th February 2023
Alicia
NSW - 2680
6kW system
5.00

Great so far

16th February 2023
Youssef
-
6kW system
1.00

11th February 2023
Joel
-
6kW system
5.00

Works brilliantly, no problems at all!

24th October 2022
Andrew
-
5kW system
5.00

30th August 2022
Juris
ACT - 2614
10kW system
2.00

WIFI failed after 3 months

14th July 2022
Beryl
VIC - 3280
5kW system
5.00

I don't know yet. I have to wait until the fault is fixed. It was working well until the inspector came to inspect.

14th May 2022
Mark
-
8kW system
5.00

Love the monitoring. Great warranty

4th May 2022
Mark
VIC - 3806
6kW system
1.00

I can't comment as the installer never activated my system.

21st August 2021
Angus
NSW - 2430
6kW system
5.00

6th May 2021
-
5kW system
4.00