Posted on 11 August 2026 by Sue Bin Park

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Are there enough minerals for solar power expansion to help mitigate climate change?

Global mineral supplies are large enough to support solar development for climate change mitigation.

A 2023 analysis of 75 emissions-reduction scenarios found that projected median mineral demand largely remains within known geological resources. Projected median demand for silver was about 68,000 metric tons, compared to 530,000 tons of estimated reserves; cadmium demand was 38,000 tons against 500,000 tons of reserves.

Tellurium may constrain cadmium-telluride panels, a minority of the global solar market, but research suggests improved refining and material efficiency could substantially reduce this strain.

Recycling can further reduce demand for newly mined minerals by recovering silver, copper, silicon, and other components for reuse in future panels. Recent innovations are improving recycling cost-effectiveness, while federal programs continue to support domestic mineral supply chains and recycling research. 

The main challenge lies in expanding production and supply chains, not mineral shortages.

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This fact brief is responsive to quotes such as this one.

Sources

AP News Study: Enough rare earth minerals to fuel green energy shift

Joule Future demand for electricity generation materials under different climate mitigation scenarios

USGS Byproduct Mineral Commodities Used for the Production of Photovoltaic Cells

Yale School of the Environment As Millions of Solar Panels Age Out, Recyclers Hope to Cash In

Resources, Conservation and Recycling Innovating the recycling of silicon-based solar panels with an eco-friendly alkaline leaching process

MIT Climate Can solar panels be recycled?

U.S. Department of Energy End-of-Life Management for Solar Photovoltaics

The White House Fact Sheet: President Donald J. Trump Delegates Defense Production Act Authority with Respect to Recoverable Critical Minerals and Materials That Are Essential to Our National Defense

Columbia Law School Sabin Center for Climate Change Law Rebutting 33 False Claims About Solar, Wind, and Electric Vehicles

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Fact briefs are short, credibly sourced summaries that offer "yes/no" answers in response to claims found online. They rely on publicly available, often primary source data and documents. Fact briefs are created by contributors to Gigafact — a nonprofit project looking to expand participation in fact-checking and protect the democratic process. See all of our published fact briefs here.