Although solar panels have become one of the most effective solutions for producing renewable energy in cities and smart territories, this technology hides a lesser-known dark side that could generate an environmental crisis even more severe than the one it seeks to solve.
Why Could Solar Panels Trigger a Major Environmental Crisis?
By Gabriel E. Levy B.
www.galevy.com
A recent report published by the U.S. media outlet the Los Angeles Times states that the state of California is one of the global pioneers in promoting solar energy through the installation of rooftop panels on homes. As a result, the state has intentionally fostered the largest solar market in the United States and one of the most significant worldwide, thanks to more than 20 years of continuous efforts that have led to over one million rooftops generating their own energy.
The report also explains that starting in 2006, the state focused on encouraging individuals to adopt solar energy by providing subsidies to homeowners for the installation of photovoltaic panels. However, the panels purchased under those programs are now reaching the end of their 25-year life cycle, and many families do not know what to do with these obsolete devices. As a result, many are ending up in landfills or municipal dumps that lack sufficient protocols to process the toxic heavy metals contained in the panels, including selenium and cadmium, which have the potential to contaminate groundwater.
“People simply don’t realize that there are toxic materials in those electronic devices that, once shredded and placed in landfills, will leach into groundwater,” said Natalie Click, a doctoral candidate in materials science at the University of Arizona who studies the issue.
Solar industry expert Sam Vanderhoof, who has dedicated his life to studying the sector, states that only 1 in 10 panels is actually recycled, according to estimates derived from data from the International Renewable Energy Agency regarding decommissioned panels.
The looming challenge of managing truckloads of contaminated waste illustrates how cutting-edge environmental policy can create unforeseen hazards in the future.
“The industry is supposed to be green,” Vanderhoof said. “But in reality, it’s all about the money.”
According to the Los Angeles Times report, California embraced solar energy early on. The initiative exceeded its goals, reducing the price of solar panels and increasing the share of the state’s electricity generated by the sun. Due to that and other measures—such as requiring utilities to purchase a portion of their electricity from renewable sources—solar energy now accounts for 15% of the state’s total energy production.
However, as California advanced its renewable energy program—focusing on rebates and, more recently, a proposed solar tax—questions about how to manage the toxic waste that would accumulate years later were never fully addressed. Now, both regulators and panel manufacturers are realizing they lack the capacity to handle the situation.
“This waste will probably arrive sooner than expected and in very large quantities,” said Serasu Duran, assistant professor at the University of Calgary’s Haskayne School of Business. “While the focus has been on building renewable capacity, little attention has been paid to the end-of-life phase of these technologies.”
Duran co-authored a recent article in the Harvard Business Review, noting that “the industry’s capacity is unfortunately not prepared for the wave of waste that is likely to come.”
“It’s not just a problem in California but across the entire country. Around 140,000 panels are installed every day in the United States, and the solar industry is expected to quadruple in size between 2020 and 2030.”
Although 80% of a typical photovoltaic panel is made from recyclable materials, dismantling them and recovering glass, silver, and silicon is extremely difficult.
Recycling solar panels is not a simple process. It requires highly specialized equipment and trained workers to separate the aluminum frame and junction box without breaking the panel into shards of glass.
Another major issue is the lack of consumer awareness about the toxicity of the materials contained in panels and limited knowledge about how to dispose of them properly.
“There is an information gap, a technological gap, and a financial gap that we are working to address,” said Amanda Bybee, co-founder of SolarRecycle.org, a website dedicated to helping people understand how to recycle solar panels and how the process works.
Conclusion
Although solar panels represent one of the most significant bets for achieving the transformation of smart territories worldwide, the pollution generated at the end of their useful life is a considerable issue that must be incorporated into both public and private agendas. An effective recycling plan that enables material reuse and prevents negative environmental impact is essential to ensure that renewable energy solutions do not create new ecological problems.
