Solar panels are usually considered a clean way of generating power, and this development makes them even more sustainable. The world’s first and only Cradle to Cradle (C2C) certified solar panels were launched last month by the US-based SunPower Corporation. All panels produced at its plant in Mexicali, Mexico, have achieved the silver level award, which requires proof of a fully sustainable manufacturing process.
C2C is a set of principles that measures product quality in terms of material health, material reuse, renewable energy, water stewardship and social fairness. SunPower does not use cadmium chloride or cadmium chemicals, which are known to be harmful and are used in some solar panels. The company has a reuse and recycling programme to deal with panels at the end of their life and ensure that parts that can’t be reused are handled by certified recyclers.

read more here at theguardian.com ..

read also Cradle-to-cradle design on Wikipedia ..