Assessing the Environmental Impact of PV
The aim of this study is to evaluate the environmental impact of solar energy by analyzing its emissions, resource consumption, and
Comparing life cycle stages and proportions of GHG emissions from each stage for PV and coal shows that, for coal-fired power plants, fuel combustion during operation emits the vast majority of GHGs. For PV power plants, the majority of GHG emissions are upstream of operation in materials and module manufacturing.
The manufacturing stage of photovoltaic cells and modules is another significant contributor to environmental impacts. The use of hazardous chemicals in manufacturing, such as hydrofluoric acid, sodium hydroxide, and other etching and doping agents, poses risks to workers and the environment if not properly managed.
According to the International Renewable Energy Agency (IRENA), global photovoltaic waste is expected to reach 78 million tons by 2050, driven by the rapid increase in solar installations. A significant portion of this waste will consist of glass, which makes up about 60–70% of PV panel material .
Fthenakis and Kim (2010) reviewed the recent studies related to water usage in conventional and renewable energy type of technologies from a full-lifecycle standpoint tacking inconsideration water demand factors (withdrawal and consumption). They showed that moving to photovoltaic technology would be the best option for conserving water supply.
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