Black Silicon Solar Cells Lab (IMAGE) Michigan Technological University Caption Switching the silicon in solar panels, which change the color from blue to black, lower the cost of solar power by more than 10 percent. Credit Aino Laine, Aalto University Usage Restrictions please credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.