#Hydropower currently generates more than 6% of the total US energy supply, and its profile is growing as a uniquely flexible #renewableenergy source. As we transition from #fossilfuels toward greener but more intermittent power sources, we will rely even more heavily on hydro to provide #gridresilience. The hydro fleet itself is in transition, too—in the US, with an average age of 64 years and nearly half of nonfederal plants up for relicensing by 2035, we have a unique opportunity to design, c