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November 1, 2013
The DOE's SLAC linear accelerator, or "linac," stretches in a straight line for two miles across the hills of Stanford University in Menlo Park, California. The building shown in the photo -- known as the "klystron gallery" because it houses machines called klystrons that power the accelerator -- is the longest modern building in the world. The particle accelerator itself is a copper tube roughly 20 feet below ground and has been used to accelerate electrons and positrons for over 50 years of world-leading scientific experiments. | Photo courtesy of SLAC National Accelerator Laboratory.
Photo of the Week: The Longest Building in the World

Check out our favorite energy-related photos!

October 31, 2013
The California Valley Solar Ranch produces clean, renewable electricity at the scale of traditional power plants. | Photo courtesy of SunPower.
Solar Goes Big: Launching the California Valley Solar Ranch

The clean energy revolution continues to build momentum as one of the world's largest solar photovoltaic power plants opens for business.

October 31, 2013
<div class="field field-name-field-map-byline field-type-text-with-summary field-label-hidden"><div class="field-items"><div  class="field-item odd">Data provided by <a href="/exit?url=http%3A//www.csp-world.com/" rel="nofollow">CSP World</a>. Map by <a href="http://energy.gov/contributors/daniel-wood">Daniel Wood</a>.</div></div></div>
Top 10 Things You Didn't Know About Concentrating Solar Power

Sharing our top facts tied to one the most important players in the utility-scale solar industry.

October 22, 2013
Video: Training Clean Energy Leaders of the Future

Solar Decathlon 2013 might have ended, but it is having a lasting effect on sustainable design and our nation's clean energy leaders.

October 22, 2013
Solar Decathlon 2013
September 30, 2013
Solar Decathlon 2013: Let the Building Begin

Last week, teams began reassembling their houses on the Solar Decathlon competition site. See photo updates from the first week of construction.

September 27, 2013
In early January 2013, Solar Decathlon teams gathered at the competition site in Irvine, California. | Photo courtesy of Stefano Paltera, Energy Department.
Come for Solar Decathlon, Stay for the Clean Energy XPO

Hosted alongside the Solar Decathlon, the clean energy XPO will showcase technology innovations and sustainable living through interactive exhibits. Learn how you can visit both!