![Working Papers](https://mackinstitute.wharton.upenn.edu/wp-content/uploads/2016/06/Working-Paper-150x100.png)
Globally, 1.5 billion people live off the grid, their only access to electricity often limited to operationally-expensive fossil fuel generators. Solar power has risen as a sustainable and less expensive option, but its generation is variable during the day and non-existent at night.…Read More