READ: Manufacturers like Hanwha @Qcells_NA are racing to develop new kinds of solar panels that can generate 25% more energy than most such devices available today. If they are successful, the advance will allow the world to meet the rapidly rising demand for electricity with less land and roof area. The new technology, known as tandem solar, involves adding second and third layers of material, like a layer cake, to allow panels to convert more of the sun’s radiance into electricity. Researchers have been working to perfect tandem panels for many years, but now several companies say they are preparing to sell such panels commercially soon, after successfully testing the devices and obtaining certifications from technical bodies. tinyurl.com/5n7xjja3