National Hydropower Day

Recognizing the resource's contributions to the electrical grid


In celebration of National Hydropower Day, we invite you to explore PNNL's research supporting this clean, renewable energy source.

PNNL’s Aquatic Research Laboratory

Did you know that Pacific Northwest National Laboratory has a 7,400-square-foot laboratory that serves as home to 10-20 thousand fish at any given time? The facility enables research focused on the impacts of hydropower development and operation. Water is pumped in from the nearby Columbia River and is then heated or cooled to help rear various species of fish. Many of the fish are tagged and released. To learn more:

Save the Date: Fish Passage 2022

 Pacific Northwest National Laboratory will host Fish Passage 2022, the International Conference on River Connectivity. The event will take place at PNNL’s Discovery Hall, in Richland, Wash., on June 13-16, 2022. More information will be available soon!

HydroWIRES Pumped Storage Hydropower Report

Pacific Northwest National Laboratory recently conducted a comparative study to evaluate the environmental effects of building and operating two types of PSH: the traditional open-loop system and a relative newcomer, closed-loop. The PNNL team found that environmental risks of closed-loop PSH systems are generally lower than those of open-loop PSH. Read the report here.

HydroPASSAGE Tools for Fish Survival

 Pacific Northwest National Laboratory and Oak Ridge National Laboratory co-lead DOE’s HydroPASSAGE project, which develops and promotes tools and information for fish survival. PNNL and DOE hosted a webinar that provides an overview of the two of the tools—the Hydropower Biological Evaluation Toolset (HBET) and Biological Performance Assessment (BioPA). View the webinar here.

HydroWIRES, the Story

DOE’s HydroWIRES initiative aims to clarify the evolving role of hydropower as part of a modern grid infrastructure and unlock its potential for optimizing grid operations. The initiative is organized into research areas, each with a story behind them. Check out the story on PNNL’s website.