By the end of 2019, approximately one out of three Americans lived in a state or community that has committed to or achieved 100% clean electricity, and experts say that getting to these ambitious goals will require large amounts of storage to smooth out electricity supply on a renewables-heavy grid.
In this four-part series, Utility Dive takes a closer look at the different storage technologies that could play a key role in this transition, as well as the people — the utility employees, developers, researchers and others — that are driving them.