Indium: sustainability, not supply

The supply of indium, both for layers in silicon solar cells and some thin-film PV technologies, is increasingly seen as a future potential bottleneck that solar and other industries relying on the material will have to manage. Resolving indium supply concerns may be a case of rethinking mining waste and recycling, reports Ian Morse.

Issue 01 – 2022
01027_midsummer wave_opt

Swedish company Midsummer produces solar roof tiles based on CIGS thin film. Concerns have been raised over growing demand for indium in this and other solar cell technologies, but improvements in processes to extract the material from mixed ores could take the pressure off the supply chain.

Image: Midsummer

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