Though solar energy has found a dynamic and established role in today’s clean energy economy, there’s a long history behind photovoltaics (PV) that brought the concept of solar energy to fruition. With the way the cost of solar has plummeted in the past decade, it’s easy to forget that going solar had a completely different meaning even just 15 years ago. Let’s go back a few centuries to the origins of solar PV and explore the history of solar energy and silicon solar technology.