The Dark Side of the Sun: Solar Panels to become Future Source of Toxic E-Waste

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In recent years the electronics industry has gained notoriety for creating an endless stream of disposable products that make their way at life's end to developing countries, where poor people without safety gear cut and burn out valuable materials, spilling contaminants into their water, air, and lungs.

Solar modules contain some of the same potentially dangerous materials as electronics, including silicon tetrachloride, cadmium, selenium, and sulfur hexafluoride, a potent greenhouse gas. So as solar moves from the fringe to the mainstream, insiders and watchdog groups are beginning to talk about producer responsibility and recycling in an attempt to sidestep the pitfalls of electronic waste and retain the industry's green credibility.

Solar modules have an expected lifespan of at least 20 years so most have not yet reached the end of their useful lives. But now, before a significant number of dead panels pile up, is the perfect time to implement a responsible program, according to Sheila Davis, executive director of the Silicon Valley Toxics Coalition.

The nonprofit environmental group has been a leader in recognizing the problems of e-waste, including hazardous disposal sites in the Bay Area left by the semiconductor industry. Now it is focused on the solar boom in Silicon Valley. Last year the group published a report calling for a "just and sustainable" solar industry, and this year it issued a scorecard of solar companies. The scorecard evaluates recycling and extended producer responsibility for the product's end of life, called takeback; supply chain and green jobs; chemical use and lifecycle analysis; and disclosure.

Solar energy is the most widely available resource we have. Every hour, enough solar energy strikes Earth to meet human energy needs for more than a year, according to NASA. Now the solar industry is poised for huge growth in the United States, thanks to policy changes, incentives, technological improvements, and economies of scale. Solar photovoltaics have recently become less expensive than nuclear energy on a per-kilowatt-hour basis, according to a new report from Duke University. Also, solar is widely expected to reach cost parity with fossil fuels in most markets by 2013. Read the full article ... and download the white paper.