FILE - In this file photo taken March 23, 2010, installers Arin Gharibian, left, Hayk Mkrtchayan, and team leader Edward Boghosian, right, all employees of California Green Design, assemble solar electrical panels on the roof of a home in Glendale, Calif. Homeowners on the hunt for sparkling solar panels are lured by ads filled with images of pristine landscapes and bright sunshine, and words about the technology�??s benefits for the environment - and the wallet. What customers may not know is that there�??s a dirtier side. While solar is a far less polluting energy source than coal, many panel makers are nevertheless grappling with a hazardous waste problem. Fueled partly by billions in government incentives, the industry is creating millions of solar panels each year and, in the process, millions of pounds of polluted sludge and contaminated water. (AP Photo/Reed Saxon, file)
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