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Last updated: 27 August 2018

With so many solar panel brands claiming to be the most efficient, best value, or technologically advanced, picking one above the rest is no easy task. We lab test and review the latest solar panels to help you choose.

  • Our solar panel buying guide will help you decide which type of panel you need.
  • Our member survey details our members' experiences with different brands' solar panels, inverters and suppliers.
  • To understand our testing rigour and scoring method, see how we test.
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Our test covers both mono- and multicrystalline panels, from Australian and international brands. This review includes the results from three months 'in the field': we'll keep them there for at least 12 months to give a true measure of their performance across all seasons.

Our expert testers give every solar panel a thorough workout to help find the models that:

  • are closest to their labelled power output
  • deliver the most power per square metre of panel.

Our interactive comparison tool helps you find out which brands are most efficient and which have the best warranties. Note that there are no product images; most solar panels look very similar and appearance isn't a major factor when choosing them.

This is the second batch of solar panels we've tested. For more about the results of our previous batch of tested solar panels, see what we found. We've removed those previously tested models from this review because they've all been superseded by newer models. Also the latest batch has only been in testing for three months, and it's not a valid comparison to include the earlier panels in the same review as those had been on test for 12 months in a full range of seasonal conditions.

We haven't recommended any panels yet as they've only had three months testing. We'll look at recommendations when we're further into the test.

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Brand

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List of brands we tested in this review.

Price

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Price per panel paid in 2018. Actual prices can vary significantly between suppliers - you need to compare costs of whole systems and installation, not just the panels.

enter value/s in increments of 1 between 149 and 243

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Claimed nominal power (W)

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The nominal power output for the panel under standard lab conditions. Actual power output in outdoor conditions will be lower, due to variable sunlight and temperature conditions.

enter value/s in increments of 1 between 255 and 300

Product warranty (yrs)

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The warranty for the panel itself, covering repair or replacement if the panel is faulty.

Test results

Measured average power outdoors 3 months (W)

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The average power output for this panel, obtained from testing two samples over three months (approximately April-June 2018) in the CSIRO outdoor array. For details, see our article on how we test solar panels.

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Measured power in lab when new (W)

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The average power output for this panel, obtained from CSIRO laboratory flash testing of two samples when the panels were new. For details, see our article on how we test solar panels.

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  • Overall score
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  • Measured average power outdoors 3 months (W)
  • Measured power in lab when new (W)
  • Yield per 1000W by label 3 months (W)
  • Efficiency
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  • Price
  • Price per watt
  • Claimed nominal power (W)
  • Claimed power tolerance
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  • Performance warranty (yrs)
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