Parliamentary question - E-005540/2021Parliamentary question
E-005540/2021

Silicon – towards a shortage of an abundant metalloid

Question for written answer  E-005540/2021
to the Commission
Rule 138
Annika Bruna (ID), Elena Lizzi (ID), Gianantonio Da Re (ID), Ioannis Lagos (NI), Elżbieta Kruk (ECR), Javier Nart (Renew)

Silicon, a metalloid used in the manufacture of electronic chips, glass and solar panels, is the most abundant element on Earth after oxygen (28 % of the earth’s crust).

Nevertheless, its price has recently increased by 300 %, as it is mainly extracted in China, a country affected by a major energy crisis. Cutting the rock to extract silicon is very energy-intensive.

The rise in the price of coal and gas, combined with a reduced output from hydroelectric dams, has led to energy rationing in Chinese silicon mines. This, in turn, has resulted in higher prices for silicon and hence for photovoltaic panels.

In addition, there is the significant human and ecological cost of silicon purification: the process involves chlorine, acids and various solvents which contaminate air, water and soil, endangering employees and local populations.

Last updated: 20 December 2021
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