Solar Inverter Comparison Chart

Note: this table is out of date – see our shiny new inverter comparison table here.

When comparing inverters, one of the most important things to consider is the inverter efficiency.

Unlike solar panel efficiency, which, somewhat counter intuitively, does not directly affect the amount of electricity your solar system will produce (you can read why here), solar inverter efficiency is critical to your solar system performance.

All the power from every solar panel goes through your inverter, so the amount of energy that your solar system generates is totally dependent of your inverters efficiency. The higher the inverter efficiency, the more power you’ll get and the more money you’ll save.

To help you compare inverters, I’ve created the tool on this page which uses inverter efficiency data from the California Energy Commission and applies it to inverters that are approved in Australia.

The efficiencies listed in this table are known as the “Californian Efficiency” and I use these numbers because they are independently measured, which I think is a lot better than relying on the manufacturers’ own measurements, who may be a little optimistic when measuring their own inverters don’t ya think?

Please note: not every inverter available in Australia is in this list because I only use inverters that have been tested by our Californian friends!

Note: efficiency isn’t everything! Also critical is reliability. The inverter is the item most likely to fail in the first 10 years of your solar system, so my advice is always get a 10 year inverter warranty.

One of the best ways to judge an inverter’s reliability is to check out our solar inverter reviews where I’ve asked thousands of solar system owners who’ve had their system for more than 12 months how reliable their inverter has been.

Tip: Search For manufacturer e.g. "Suntech"
or first few digits of part no. e.g. "ET190"

Showing only

Inverter Size To Watt


Manufacturer Model
Size Efficiency Californian
Sunny Roo Products SR4000TLI 4000W SR4000TLI
Sunny Roo Products
Sunny Roo Products SR4000TLI 4000 W 96.00 Yes
KLNE Sunteams 1500 1500W Sunteams 1500
KLNE Sunteams 1500 1500 W 95.00 Yes
KLNE Sunteams 2000 2000W Sunteams 2000
KLNE Sunteams 2000 2000 W 96.00 Yes
KLNE Sunteams 3000 2800W Sunteams 3000
KLNE Sunteams 3000 2800 W 96.00 Yes
KLNE Sunteams 4000 4000W Sunteams 4000
KLNE Sunteams 4000 4000 W 97.50 Yes
KLNE Sunteams 5000 4600W Sunteams 5000
KLNE Sunteams 5000 4600 W 97.50 Yes
Power One Aurora UNO-2.0-I-OUTD-S 2000W UNO-2.0-I-OUTD-S
Power One Aurora
Power One Aurora UNO-2.0-I-OUTD-S 2000 W 95.50 Yes
Power One Aurora UNO-2.5-I-OUTD-S 2500W UNO-2.5-I-OUTD-S
Power One Aurora
Power One Aurora UNO-2.5-I-OUTD-S 2500 W 96.00 Yes
Altenergy Power System YC250A 225W YC250A
Altenergy Power System
Altenergy Power System YC250A 225 W 94.00 Yes
Altenergy Power System YC250I 225W YC250I
Altenergy Power System
Altenergy Power System YC250I 225 W 94.00 Yes
Altenergy Power System YC500A 500W YC500A
Altenergy Power System
Altenergy Power System YC500A 500 W 95.00 Yes
Altenergy Power System YC500I 500W YC500I
Altenergy Power System
Altenergy Power System YC500I 500 W 95.00 Yes
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