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Electricity

April 16, 2014
Power lines carry electricity across Washington State. | Photo courtesy of the Energy Department.
How Synchrophasors are Bringing the Grid into the 21st Century

Learn about synchrophasors and how they are helping grid operators keep power flowing reliably to American homes and businesses.

April 7, 2014
Americans' use of wind energy -- like that produced at this wind farm in Montana -- grew by 18 percent in 2013 over the previous year. | Photo courtesy of Free Images.
Four Snapshots of American Energy Use

Americans used more energy in 2013 than they did in 2012, including more renewable, nuclear and fossil energy. Learn other facts about American energy use trends.

January 28, 2014
Join Energy.gov tonight as we livetweet about all the major energy points in the President's State of the Union address. | Graphic by <a href="/node/379579">Sarah Gerrity</a>, Energy Department.
Join Energy.gov at the 2014 State of the Union

Join Energy.gov tonight as we livetweet about all the major energy points in the President's State of the Union address.

November 22, 2013
Edison vs. Tesla
November 22, 2013
Edison vs. Tesla: Toasting a Rivalry That Drove Innovation

Test your knowledge of energy inventors Thomas Edison and Nikola Tesla with our downloadable "Who Said It?" quote quiz cards.

November 21, 2013
This week, the Energy Department's digital team has been focusing on the rivalry between two of history's most important energy-related engineers: Thomas Edison and Nikola Tesla. Edison and Tesla's developments in electric power generation and distribution made possible many later breakthroughs. This 1951 photo shows a simple string of four 100-watt light bulbs powered by the first useful electricity ever produced by nuclear power, generated on December 20, 1951, by Argonne's Experimental Breeder Reactor 1. | Photo courtesy of Argonne National Laboratory.
Photo of the Week: Bright Ideas

Check out our favorite energy-related photos!

November 20, 2013
Electrical transmission lines cross a snow-covered field in Dallas Dam, Oregon. | Photo courtesy of the Energy Department Flickr page.
The War of the Currents: AC vs. DC Power

Nikola Tesla and Thomas Edison played key roles in the War of the Currents. Learn more about AC and DC power -- and how they affect our electricity use today.

November 18, 2013
Nikola Tesla in or around 1890, when the inventor was in his mid-30s. | Photo is in the public domain. Image courtesy of the Library of Congress.
Top 11 Things You Didn't Know About Nikola Tesla

Learn facts about Nikola Tesla, one of history's most important energy-related inventors and engineers.

October 29, 2013
Workers repair power lines in the Mid-Atlantic shortly after Hurricane Sandy. | Photo courtesy of the Energy Department.
Hurricane Sandy One Year Later: Rebuilding Stronger, More Resilient Communities

The Energy Department continues to take actions to protect our energy infrastructure, adapt to climate change and build partnerships to make communities across the country stronger and more resilient.

October 21, 2013
FACT SHEET: Energy Department Actions to Deploy Combined Heat and Power, Boost Industrial Efficiency

Underscoring President Obama’s Climate Action Plan to cut harmful emissions and double energy efficiency, the Energy Department is taking action to develop the next generation of combined heat and power (CHP) technology.