The manufacturing of solar panels is a complex process that requires the use of chemicals, heat, and electricity to produce photovoltaic cells from silicon. This silicon must be melted at a high temperature of 1,414°C. 

During this process, several pollutants are released into the atmosphere, including nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), volatile organic compounds (VOCs), and particulate matter (PM).

Additionally, the production of solar panels relies on rare earth elements and precious metals such as silver, copper, indium, and gold, along with lithium for solar batteries.

These materials are scarce and require extensive mining operations, which can cause severe environmental consequences due to habitat disruption, water contamination, and significant energy consumption.