THIS ARTICLE IS republished from The Conversation under a Creative Commons license.
The sight of solar panels installed on rooftops and large energy farms has become commonplace in many regions around the world. Even in the gray and rainy UK, solar power is becoming a major player in electricity generation.
This surge in solar is fueled by two key developments. First, scientists, engineers, and those in industry are learning how to make solar panels by the billions. Every fabrication step is meticulously optimized to produce them very cheaply. The second and most significant is the relentless increase in the