Department of Energy

Energy Storage

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As America moves closer to a clean energy future, energy from intermittent sources like wind and solar must be stored for use when the wind isn’t blowing and the sun isn’t shining. The Energy Department is working to develop new storage technologies to tackle this challenge -- from supporting research on battery storage at the National Labs, to making investments that take startup concepts to grid-scale solutions.

Batteries

From consumer electronics to laptops to vehicles, batteries are an important part of our everyday life. Learn about the Energy Department's...

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Pumped Storage Hydropower

In addition to traditional hydropower, pumped-storage hydropower (PSH)—A type of hydropower that works like a battery, pumping water from a lower...

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Energy Storage R&D Overview

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

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Making Better Batteries With Hydrogen

National Lab scientists have found a promising way to improve lithium ion batteries using hydrogen.

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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...

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Smoothing the Flow of Renewable Solar Energy in California’s Central Valley

How flow batteries can support renewables and resiliency on the grid.

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Charting the Future of Energy Storage

As we continue to incorporate more renewable energy into the grid, technologies that store energy like batteries will be key to providing a...

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INFOGRAPHIC: Understanding the Grid

Our new infographic shows how electricity is generated, transmitted and distributed for use in our homes.

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