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August 23, 2016
Pumped-storage hydropower is complementary to variable generation, such as wind and solar, because it can reduce curtailment of excess generation by providing load and energy storage, thus enabling greater integration of these resources into the electric power system. | <em>Map image courtesy of the Hydropower Vision report</em>
Pumped-Storage Hydropower Shows Promise for Boosting Energy Storage

As a major clean energy contributor, U.S. hydropower plays an important role today for both electricity generation and energy storage. For more than 100 years, U.S. hydropower has been an important source of low-cost, low-emissions renewable energy.

August 18, 2016
A rainbow trout, one of several species of fish being tracked using PNNL's new injectable, self-charging acoustic fish tags. These devices allow scientists to research how fish migrate through waterways when encountering hydrokinetic dams. | Photo courtesy of PNNL
Self-charging Tracking Device Monitors Fish Migration through Hydroelectric Dams

In order to understand how fish swim through rivers, Pacific Northwest National Laboratory (PNNL) has developed an injectable tracking device, known as an acoustic fish tag, with a self-charging battery. Funded by the Energy Department, this project is part of a long-term mission to contribute valuable research on fish migration through waterways when encountering hydroelectric dams. The key purpose of the study is to see whether or not fish become injured or hindered by the presence of hydroelectric devices.

July 26, 2016
Water Blog
Hydropower Vision: New Report Highlights Future Pathways for U.S. Hydropower

Hydropower has been around for more than a century and is currently the nation's largest source of clean, domestic renewable electricity. Our new Hydropower Vision report explores how it could grow by 2050.

May 24, 2016
The Wave Energy Prize teams got to tour the 12-million gallon Maneuvering and Seakeeping (MASK) Basin at the U.S. Navy's Carderock facility in Maryland, where their devices will be tested this summer.
Wave Energy Prize Teams Make a Splash During Waterpower Week

Teams competing in the Energy Department's Wave Energy Prize recently took a three-day break from developing their innovative technologies to meet with each other and hydropower stakeholders, and also tour the 12-million gallon wave-generating tank at the U.S. Navy's Carderock facility in Maryland, where they will test their devices this summer.

April 25, 2016
The Opekiska Lock and Dam, a non-powered dam on the Monongahela River. Credit: U.S. Army Corps of Engineers
Energy Department Opens New Round of Funding to Reward New Hydropower

Harnessing the power of water to generate electricity means finding new locations that can be upgraded with hydropower technology. The Energy Department is opening applications for a new round of funding to identify facilities that might be capable of producing electricity with the right technology. The sum of $3.5 million in funding will be awarded as incentive payments based on kilowatt hours of electricity generated.

March 29, 2016
Acoustic Doppler velocimeter, deployed in Puget Sound, Washington State. Image courtesy Jim Thomson, University of Washington.
Calming the Waters: The Impact of Turbulence on Tidal Energy Systems

New research is helping the emerging tidal energy industry learn from their counterparts in the wind industry. By considering the effects of atmospheric turbulence when developing turbine designs, the wind industry has lowered the cost of energy to record lows and deployed turbines broadly across much of the nation.

March 2, 2016
Image courtesy the Pacific Northwest National Laboratory's (PNNL) Marine Sciences Laboratory.
Energy Department Announces $22 Million for Marine Energy Demonstration and Environmental Monitoring Technology Projects

A $22 million funding opportunity to study marine and hydrokinetic energy systems was announced today by the Energy Department. The projects funded will help improve monitoring to reduce environmental impacts and lower the cost of generating electricity from waves, tides and currents.

December 22, 2015
Water Blog
Year in Review: Celebrating Wind Energy and Water Power

Renewable energy from wind and water had a big year in 2015. As the year comes to a close, we celebrate the milestones of renewable electricity generation in wind and water power with a list of some of our largest accomplishments.

December 16, 2015
Water Blog
New Hydropower, Hidden in Plain Sight

The federal government's new Section 242 Hydroelectric Production Incentive is harnessing existing non-hydroelectric dams and conduits to provide new sources of hydroelectric energy.

November 24, 2015
Water Blog
Innovative Hydropower Technology Now Powering an Apple Data Center

The Schneider family continues a family legacy of developing new hydropower technologies through their company, Natel Energy. Apple is now buying power from a hydropower installation of theirs in Oregon.

November 5, 2015
Water Blog
Making a Difference: Hydropower and Our Clean Energy Future

Hydropower is one of our best renewable energy sources. By helping develop hydropower, EERE is Making A Difference in generating clean, sustainable and affordable electricity for millions of American homes and businesses.

August 31, 2015
Water Blog
Current Obsession: AC/DC

Though humans have been harnessing water to perform work for thousands of years, the evolution of modern hydropower began in the late 1800’s–coincidentally at the same time that Thomas Edison and Nikola Tesla were embroiled in a battle now known as the War of the Currents.

August 18, 2015
Water Blog
River Turbine Provides Clean Energy to Remote Alaskan Village

A revolutionary river turbine device, developed with funding from DOE, will provide affordable power to a remote Alaskan village. If successful, this project will pave the way for making greater use of hydrokinetic tidal energy in the future.

August 14, 2015
Water Blog
Wave Energy Prize Narrowed from 92 Teams to Top 20

After an unprecedented 92 teams registered to compete in the Energy Department-funded Wave Energy Prize, today we announced the top 20 teams. These teams all passed through Technology Gate 1: providing a thorough technical submission detailing their device and its functionality.

July 15, 2015
Water Blog
Wave Energy Simulation Team Carries Home International Award

In order to harness the power of waves to generate electricity, engineers must be able to predict how large floating devices will perform in a dynamic environment—that is, in the water among waves. A team sponsored by the Energy Department, including members from NREL and Sandia National Laboratories, addressed that challenge and won a recent international competition.

July 6, 2015
Energy Department-supported "Azura" wave energy converter is installed at a U.S. Navy test site in Hawaii. | Photo courtesy of Northwest Energy Innovations.
Capturing the Motion of the Ocean: Wave Energy Explained

Water covers 71 percent of the planet -- so why isn't wave energy a bigger part of our clean energy strategy? New technology could make it competitive sooner than you think.

June 30, 2015
Water Blog
From Flour to Grits, a Water-Powered Mill Keeps on Grinding

A mill owned and operated for six generations by the Weisenberger family has been grinding grains in the heart of Kentucky since the Civil War. In 1862, August Weisenberger emigrated from Baden, Germany, to start milling grains in Midway, Kentucky. He purchased the existing three-story stone mill on the banks of South Elkhorn Creek in 1865—the perfect location to harness water power to operate the mill.

June 24, 2015
Water Blog
A Warm Weather Win-Win: Summer Fun and Clean Energy with Hydropower Dams

Summer is a great time to hit the water--but you don't have to go to the beach. Hundreds of hydropower dams include reservoirs where a variety of recreational activities can be enjoyed by the whole family!

June 8, 2015
Water Blog
Prototype Testing Could Help Prove a Promising Energy Source

A new wave energy device has been deployed in the US Navy's Wave Energy Test Site in Oahu, Hawaii's Kaneohe Bay and is already generating electricity for a Marine base.

April 27, 2015
Water Blog
Hydropower Still in the Mix

Hydropower is the largest source of renewable energy in the United States, and it continues to advance with new developments, including "powering" dams that currently do not generate electricity.

April 27, 2015
Water Blog
Get Pumped about Pumped Storage

Often described as “giant batteries,” pumped storage hydropower (PSH) plants account for the bulk of utility-scale electrical energy storage in the United States and worldwide.

October 22, 2014
Water Blog
Making Hydropower More Eco-Friendly

Find out how the Energy Department is helping to improve hydropower technologies.

August 4, 2014
The Energy Department has launched the second round of a coding competition to help industry develop new models and tools that improve the design, development, and optimization of marine and hydrokinetic devices.
Calling All Coders: Help Advance America's Wave Power Industry

The second round of coding competition kicks off that will help industry develop models and tools that improve the design, development, and optimization of marine and hydrokinetic devices.

April 29, 2014
A new assessment conducted by Oak Ridge National Laboratory has identified more than 65 gigawatts of untapped hydropower potential in U.S. rivers and streams.
Huge Potential for Hydropower: Assessment Highlights New Possible Clean Energy Sources

The Energy Department’s New Stream-reach Development Assessment, conducted by Oak Ridge National Laboratory, has identified more than 65 gigawatts of untapped sustainable hydropower potential in U.S. rivers and streams.

April 16, 2014
Riding the Clean Energy Wave: New Projects Aim to Improve Water Power Devices

The Energy Department announces two projects as part of a larger effort to deploy innovative technologies for clean, domestic power generation from water power resources.