The solar panels will generate around 100,000 tonnes of waste at the end of their life, according to a study led by the University of South Australia. Most solar panels are expected to last around 25 to 30 years before their energy-generation capacity declines significantly.

In a new paper, the researchers called for incentives for producers to design solar panels that can be more easily recycled if they are damaged or out of warranty.

“Australia has one of the highest uptakes of solar panels in the world, which is outstanding, but little thought has been given to the significant volume of panels ending up in landfill 20 years down the track when they need to be replaced,” said professor Peter Majewski.

“There are some simple recycling steps that can be taken to reduce the waste volume, including removing the panels’ frames, glass covers and solar connectors before they are disposed of.

“Landfill bans are already in place in Victoria, following the lead...