The demand for cheaper, greener electricity means that the energy landscape is changing faster than at any other point in history. This is particularly true of solar-powered electricity and battery storage. The cost of both has dropped at unprecedented rates over the past decade and energy efficient technologies such as LED lighting have also expanded.

https://theconversation.com/how-a-new-solar-and-lighting-technology-could-propel-a-renewable-energy-transformation-133658