energi

It's time for your DVR to get as smart as your iPad. If designers get it right, energy use from household electronics will stay under control without sacrifices in features.

By necessity, mobile devices, such as tablets and smart phones, need to be clever about power, just like an efficient hybrid car uses many tricks, such as turning the engine off when idle, to sip less gas.

By contrast, always-on electronics devices, such as set-top boxes, DVRs or often game consoles, operate as if they were going top speed at all times. As more devices in the home, such … Read more

On the day Bloom Energy officially opened shop on the East Coast, the company's CEO confirmed Bloom will supply fuel cells to Apple's North Carolina data center.

Bloom Energy today is breaking ground on a factory in Newark, Del., to build its Bloom Energy Servers, or Bloom Boxes, which produce electricity from natural gas or biogas.

The facility, which was a former Chrysler plant, will have the capacity to turn out 1,000 Bloom Boxes a year, Bloom Energy CEO K.R. Sridhar said in an interview with CNET. Each fuel cell, which is the size of few … Read more

In a new twist on using waste for energy, Microsoft is designing a data center powered by biogas, the gas given off from landfills and other sources.

The company last week further detailed its Data Plant experiment, an idea to bring more reliability to its data centers and lower pollution from them.

Fuel cells would supply power to the data center and make it independent from the grid, said Christian Belady, general manager of Data Center Services in a blog post last week. In theory, having on-site power allows a data center operator to use the electric grid as bac … Read more

Here's something you can thank Steve Jobs for: a fatter electricity bill.

A dive into the data from the U.S. Energy Information Administration (EIA) spells out what many of us intuitively know: the explosion in the number of computer gadgets and TVs has dramatically shifted the balance of household electricity over the years.

Even the rapid technology change of the Internet revolution can't compare to the always plugged-in lifestyle that's crept up on us through iPods, e-books, smartphones, DVRs, and the like. Electronics represented about 7.2 percent of household electricity use in 2001 and are … Read more

Laser weapons haven't exactly lit the world on fire yet. And that's a big part of what's holding them back.

That's one of the main conclusions of a new report, "Changing the Game: the Promise of Directed-Energy Weapons," just out from the Center for Strategic and Budgetary Assessments, a Washington, D.C., think tank focused on national security and military matters.

The report comes at a low ebb in the enthusiasm for directed-energy weapons -- futuristic gear that produces "a beam of concentrated electromagnetic energy or atomic or subatomic particles." That includes … Read more

A video from Altaeros Energies shows a novel vision for powering remote locations.

The wind energy startup released a video this week of its prototype airborne wind turbine during its first test run in Maine earlier this year. The donut-shaped blimp has a spinning fan at its center, and it's tethered to a base station by cables that carry electricity from the blimp to the local grid.

The turbine is designed for remote villages or industrial sites where there isn't grid power and for places such as military outposts that need to rely on diesel generators.

With the … Read more

Concerned about the Earth or just your electric bill? Verde is an iPad app that has you tally up the electrical appliances in your home, from your refrigerator and HDTV to iPods and lightbulbs. The app costs $4.99 but is being offered for free until Earth Day, April 22.

Launch the app, select your climate zone, and then Verde will either estimate your electricity rate or let you enter your own per kilowatt hour (kWh) figure, which you can find on your electric bill. After settling on a kWh number, you'll then want to walk through your home … Read more

Electricity costs on game consoles have soared into the billions with tons of energy being wasted, according to a study (PDF) by researchers at Carnegie Mellon University. However, it doesn't have to stay this way.

The moral of this study: power down when done playing.

According to the research, 68 percent of all game console energy consumed in 2010 happened while in idle mode, which equaled 10.8 TWh of energy and about $1.24 billion in electricity costs. Overall, 1 percent of U.S. residential energy consumption in 2010 was spent on video game consoles, which is an … Read more

Greenpeace is pushing harder for cloud-computing companies to cut back on coal and tap into cleaner sources of electricity.

The environmental watchdog group today released its latest rankings of companies, including Google, Apple, and Amazon, that run giant data centers to serve up Web pages and services. Greenpeace now has a "clean energy index" to measure how much electricity from renewable sources is used by these companies.

Greenpeace has been pressuring cloud companies for years to improve the efficiency of their data centers, advocate for clean-energy policies, and disclose energy usage.

This year, Yahoo, despite its dire financial … Read more