When Yifeng Chen was a teenager in Shantou, China, in the early 2000s, he saw a TV program that amazed him. The show highlighted rooftop solar panels in Germany, explaining that the panels generated electricity to power the buildings and even earned the owners money by letting them sell extra energy back to the electricity company. Yifeng Chen Employer Trina Solar TitleAssistant vice president of technology Member Grade Member Alma Maters Sun Yat-sen University, in Guangzhou, China, and Leibniz ...