CNET tests the 2012 Ford Edge with its Ecoboost engine. With only 2-liters of displacement, this engine produces more than adequate horsepower while getting excellent mileage.

Industry cost leader First Solar says it expects to bring thin-film solar panels to market with an efficiency between 14 percent and 15 percent in three years, as competition heats up.

AMD’s FX processor line-up was supposedly designed with efficiency in mind, according to AMD. We're putting this claim to the test, assessing the Bulldozer architecture at a number of different clock rates and comparing the results to Intel's CPUs.

Gains to quantum efficiency could yield around a 35 percent gain in conversion efficiency, the key metric

Fuel consumption ratings in Canada show that vehicles use significantly less gasoline than U.S. estimates indicate. CBC News and the Automobile Protection Association selected 13 popular 2012 models from seven vehicle classes and compared the Canadian and American fuel consumption ratings.

In the busy field of building energy software, startup Noesis Energy will try to give away its software and build a community willing to pay to see how different efficiency projects perform.

We've already seen AMD's Bulldozer architecture come up short in the performance benchmarks. However, the company also claims it made important improvements to power consumption. Can FX-8150 at least score some points in the energy efficiency department?

To make a "black silicon" that can absorb more light, Harvard spin-off SiOnyx introduces a laser texturing treatment to turn up solar cell efficiency.

Social networking meets energy efficiency in Facebook app done with Opower and the National Resources Defense Council (NRDC) that lets people compare energy use to friends and the national average.

A research paper finds the electrical efficiency of computers doubles roughly every year and a half, which is what made laptops, smartphones, and tablets possible and what opens up possibilities for networks of wireless sensors.

The first fuel-economy standards for medium and heavy-duty trucks aim to improve efficiency by about 20 percent by 2018, saving about $50 billion on fuel costs largely by using existing technologies.

LED light source maker Bridgelux expects to start making LED chips on silicon wafers in about two years, a technology transition meant to cut LED lighting costs.