How can we know where—and by how much—power from solar photovoltaics (PV) is better than grid electricity? What does this mean for solar subsidies?
One Method for Any Energy Source
Our approach to assessing source energy efficiency is the same for both solar power and grid electricity. And while our analysis is based on large datasets, the results are actually pretty easy to understand.
More than 1.3 billion people, or approximately one-fifth of the world’s population, live without access to an electrical grid. That is roughly five times the number of people living in the United States, a country that is so plugged-in that access to electricity is all but taken for granted.