IKEA worked with the National Renewable Energy Laboratory (NREL) to construct this geothermal system under the store's parking garage. As deep as 500 feet beneath the garage, 130 pipes, each five and a half inches in diameter, will shoot liquid, whi... [more]

It turns out that people really are the same everywhere.OPower, which has created a software service that encourages consumers to reduce power consumption, managed to reduce power consumption by around 2.1 percent for customers participating in an en... [more]

Lighting often takes a backseat to HVAC systems when it comes to discussions about energy efficiency. But there is a lot more that can be done than just swapping in energy efficient bulbs.To expand in the burgeoning field of energy efficient networke... [more]

Now that energy efficiency is all the rage in cleantech venture circles (note to cleantech VCs: don't pitch LPs on your firm being differentiated because you target capital efficient businesses...), investors have been particularly attracted to the... [more]

We're in the midst of the great lighting transformation -- with solid-state LEDs on the cusp of transforming the lighting industry. The Edison bulb will soon be a relic and CFLs an interim step.The industrial lighting industry is $5 billion in the ... [more]

In an effort to push the limits of home energy efficiency, General Electric is partnering with the U.S. Department of Energy on a $5 million project to connect homes in the Western U.S. to its energy management system, LED lights, appliances and sola... [more]

Photo by Brandon BaunachThe human body is arguably one of the finest machines ever created by nature, and now a team from Norway's Academy of Science and Letters in Oslo are looking to it for inspiration as they design the next generation of hydrogen... [more]

Everything weighs a lot more.The average turbine tips the scale approximately 200 to 400 short tons. In all, a turbine might incorporate 8,000 components.A 64-watt solar panel, barely enough to power an incandescent bulb, can weigh 24 pounds.With die... [more]

When it comes to residential energy efficiency, there's so much more that can be done than switch off the lights. While a recent study suggests that the average American is completely clueless about what those other actions are, the government is fun... [more]

This really is something old, new, borrowed and blu.Blu Homes, which bought the home designs and other intellectual property from Michelle Kaufmann Designs last year after that company ran out of money, has come out with its first modular homes. The ... [more]