Solar power seems the most likely renewable energy solution when looking into the future. This conversion of energy turns sunlight into electricity, either directly through photovoltaics (PV), indirectly using concentrated solar power or a combination. But now, Caltech is taking this a step further by collecting solar power in space and sending it to Earth but before we get into Caltech’s Space Solar Power Project (SSPP), let’s take a quick look at what solar power is.