Looking to buy or sell a used car? A new interactive tool makes it easy to compare the fuel economy of used cars.
Answering your questions about LEDs -- from how to compare LED and incandescent bulbs to installing LEDs in existing fixtures.
All across the country, communities are competing to reduce their energy use, and you can take action too!
Celebrate Earth Day every day this year.
Start planning some fun outdoor activities for Earth Day.
Learn how the Energy Department is helping lay the foundation for more efficient homes by developing energy-saving technologies.
Our new infographic covers everything you need to know about energy-saving landscaping.
Prepare for warm weather with these home cooling tips.
Start preparations now to ensure a cool, efficient house this summer.
Answering your questions about water heaters -- from the best type of water heater for you to low-cost actions you can take to cut your water heating bill.
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