Caitlin Grady on Why Hydropower is Critical to America's Power Grid


July 4, 2025

Hydroelectric dam on the river

Hydroelectric dam on a river. (Adobe Stock)

In a recent episode of NPR’s All Things Considered podcast, “Why hydropower faces more barriers than wind or solar,” GW Engineering Associate Professor Caitlin Grady shares expert insight into the role of hydroelectricity in supporting a stable and sustainable U.S. power grid. She explains that while solar and wind are growing energy sources, hydropower plays a critical role in balancing supply and demand on the grid.

Here is an excerpt from the podcast: “We will not have a sustainable grid with just solar and wind unless we’re also building a ton of batteries, and I mean tons and tons of batteries,” said Grady.

Listen to the full episode on All Things Considered. For additional insights from Grady on the regulatory hurdles hydroelectric power faces, visit IPM News.