R2: Reduce and Reuse
Keeping PV Panels out of Waste Streams
A real-world test of refurbished panels
Across Australia, growing volumes of solar panels are reaching the end of their first life. In most of the cases, these panels are either sent to landfill or shipped offshore. Panels sent overseas are not tested for safety or performance, raising concerns that we may be sending waste or even hazardous materials to developing countries.
The R2 Project tackles this challenge by focusing on two key strategies:
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Reduce – encouraging the procurement of higher-quality, longer-lasting panels from the outset.
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Reuse – giving older panels a second life through careful refurbishment and testing.
In order to assess the suitability of reused panels for continued use, we have developed an outdoor monitoring station to expose refurbished panels to real world conditions. This website provides regular, public-facing, performance reporting of the output of the refurbished panels.
Acknowledgements
With assistance from the ACT Government under the Renewable Energy Innovation Fund.
Based [in part] on data obtained through SPOTS, Solar PV Outdoor Testing System at Australian National University. We acknowledge the traditional owners of the land on which SPOTS operates, the Ngunnawal people, and pay our respects to elders past and present.




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Refurbished panels are packed and ready for delivery from PV Lab to the installation site at ANU

Construction of the array installation is underway on the roof of the ANU building
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Panels are installed and data gathering has commenced - see results below!
Baseline Panel Data

Panel Performance Data
Month 1
Energy Production​
Recorded energy production is displayed in the bar graph. Panel R2-021 had six days offline during the month, so its output is a little lower.
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Irradiance
To get a better idea of the performance of the solar panels and control for variable insolation days, an irradiance efficiency metric shows the efficiency of the panels at converting irradiance to energy.
The outage of panel R2-021 can be seen in this data too.
The efficiency remains essentially constant over the month for all panels. If this drops, it is an indication the panel performance is degrading.


