Energy.gov

As negotiations continue at COP21, get to know the attending countries’ carbon dioxide emissions, and how they compare to your home state.

Launched at COP21 in Paris, the Global Lighting Challenge is a race to deploy 10 billion high-efficiency, high-quality and affordable lighting fixtures and bulbs (like LEDs) around the world.

At COP21 in Paris and beyond, clean energy innovation is key to solving climate change.

President Obama joins world leaders in announcing “Mission Innovation,” an initiative to dramatically accelerate global clean energy innovation to address climate change.

Learn about supercomputers and why they're important for science, energy and national security.

Explore the 60-year history of computing at one of the nation's top laboratories, and find out what's next.

The Energy Department honors our nation's veterans through the Solar Ready Vets program, which provides them with the skills to enter America's dynamic solar industry.

Not only are we made of fundamental particles, we also produce them and are constantly bombarded by them throughout the day.

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

November is National Critical Infrastructure Security and Resilience Month, and our Office of Electricity (OE) is hard at work safeguarding the power grid.

On Halloween, ghosts, ghouls and goblins will emerge to walk the streets -- but an actual terror may already be lurking in your home, leeching off your energy supply.

Watch the Energy Department's digital team bring solar panels, an atom and a wind turbine to life in spooky, candlelit time-lapse -- and get inspired to carve energy pumpkins of your own.

This Energyween, take a look at the spooky (and not-so-spooky) critters that call the National Labs home.

Here at Energy.gov, we take Halloween -- make that Energyween -- very seriously. Get in the festive spirit with one of these 5 homemade energy-themed costume ideas!

Find out who took the top five spots in our Solar Decathlon Fan Favorite poll!

Have questions about how to prepare your home for the winter months ahead? Join us Thursday, October 22 at 1 p.m. ET for a Twitter chat.

Now through Halloween, we're highlighting scarily effective ways to save energy -- and money -- at home. Get started with our energy-themed pumpkin stencils!

The Energy Department is part of the global effort to scale back the use of refrigerants thousands of times more potent than CO2.

Find out what it's taken to power 1600 Pennsylvania Avenue since the 1890s. And which President refused to touch the light switches.

National labs are working with industry to make fluorescent lights more environmentally friendly.

Explore the regional climate change vulnerabilities to the U.S. energy sector and examples of resilient solutions by clicking on each shaded area in the map or by reading the full report.

You've met the teams, now it's your turn to vote for your favorite Solar Decathlon house!

Solar Decathlon teams put their solar-powered houses to the test in 10 challenges ranging from architecture to energy efficiency. Find out what it takes to win the whole thing.