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Energy Efficiency

From the incandescent to CFLs to LEDs, we're exploring the <a href="/node/772396">long history of the light bulb</a> and how it led to new technology breakthroughs.

From the incandescent to CFLs to LEDs, we're exploring the long history of the light bulb and how it led to new technology breakthroughs.

Every year, much of the energy the U.S. consumes is wasted through transmission, heat loss and inefficient technology -- costing American families and businesses money, and leading to increased carbon pollution.

Energy efficiency is one of the easiest and most cost effective ways to combat climate change, clean the air we breathe, improve the competitiveness of our businesses and reduce energy costs for consumers. The Department of Energy is working with universities, businesses and the National Labs to develop new, energy-efficient technologies while boosting the efficiency of current technologies on the market. 


Top 4 Energy Department Inventions Saving You Energy & Money at Home

Learn how the Energy Department is helping lay the foundation for more efficient homes by developing energy-saving technologies.

Energy Secretary Moniz Promises to Focus on Energy Efficiency

During his first public speech, Secretary Moniz says he will have a strong focus on energy efficiency.

Family-Owned Restaurant Serves Up Huge Energy Savings
Energy efficiency upgrades helped the Athenian Corner reduce its operating costs and improved the restaurant's bottom line. | Photo courtesy of BetterBuildings Lowell Energy Upgrade program.

When high energy bills and a dwindling customer base threatened the Athenian Corner's well-being, the restaurant turned to energy efficiency upgrades to help operating costs and improve its bottom line.

R&D 100: Smart Sensors Mean Energy Savings
Researchers at the Energy Department's National Renewable Energy Laboratory recently developed a new smart occupancy sensor that adds optics to what had only been a motion detection before. The new sensor combines an inexpensive camera with a high-speed microprocessor and algorithms to detect movement and human presence in a room with an accuracy of more than 90 percent -- an advancement that could lead to enormous energy savings in commercial buildings. | Photo courtesy of Dennis Schroeder, NREL.

As part of our coverage on this year's R&D 100 awards, we're profiling a new smart sensor developed by NREL researchers that could help commercial buildings save on lighting and ventilation costs.