electricity

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  • Microsoft deliberately wasted energy at data center to avoid fine, says NY Times

    by 
    Steve Dent
    Steve Dent
    09.24.2012

    Microsoft's desire to avoid a fine combined with a power company's strict electricity usage rules resulted in the software giant deliberately wasting millions of watts of power, according to the New York Times. Redmond's Quincy data center, which houses Bing, Hotmail and other cloud-based servers, had an agreement in place with a Washington state utility containing clauses which imposed penalties for under-consumption of electricity. A $210,000 fine was levied last year, since the facility was well below its power-use target, which prompted Microsoft to deliberately burn $70,000 worth of electricity in three days "in a commercially unproductive manner" to avoid it, according to its own documents. The utility board capitulated and reduced the amend to $60k, but the messy situation seems a far cry from Redmond's pledge to become carbon neutral by this summer. [Image credit: New York Times]

  • Stanford researchers make heart implant powered by radio waves, put batteries out of a job

    by 
    Michael Gorman
    Michael Gorman
    09.02.2012

    Batteries used to be the only way to power implantable gadgets, but additional surgeries are needed to replace the power packs once their juice runs out -- a less-than-ideal solution for patients. Recent discoveries, however, have such medgadgets being powered by photons, hip hop and now high-frequency radio waves. Electrical engineers at Stanford built a cardiac device that uses a combination of inductive and radiative transmission of power, at about 1.7 billion cycles per second, to its coiled receiving antenna. Previous prevailing opinion held that the high frequencies needed for wireless power delivery couldn't penetrate the human body deep enough, and the lower frequencies that would do the trick require antennas too large to work as implants. That conundrum was solved by getting the high-frequency signals to penetrate deeper using alternating waves of electric and magnetic fields. That allowed a 10x increase in power delivery -- up to 50 microwatts to a millimeter radius antenna coil -- to an implant five centimeters below the skin. That antenna also was also designed to pull power regardless of its orientation, making it ideal for applications inside always-moving human bodies. Of course, the implant's really just a proof-of-concept at this stage, but hopefully it won't be long before battery powered implants go the way of the dodo TouchPad.

  • EcoXPower charges a smartphone, bicycle headlight and tail light with pedal power

    by 
    Alexis Santos
    Alexis Santos
    08.23.2012

    Bicycle rigs for charging cellphones have lit up our radar before, but now the EcoXPower is being billed as the first device of its kind that can simultaneously juice up LED lights and a smartphone with the power of your pedaling. Packing a headlamp, a red tail light and a lithium-ion rechargeable battery, the contraption attaches to a bike's front wheel hub with the help of a universal mount. When clamped on, the apparatus' clutch engages between the velocipede's spokes so it can generate electricity. A USB adapter cable runs up the two-wheeler's fork to a water-resistant, touchscreen-friendly case that can house iPhones, Android handsets and "all major GPS devices" perched atop the handlebars. Cyclists yearning to charge their electronics with the dynamo can pick one up for $99.99. Roll past the break for the full press release.

  • Researchers create super-efficient microbial fuel cell, dream of selling excess electricity

    by 
    Alexis Santos
    Alexis Santos
    08.14.2012

    Recycling wastewater to generate energy has turned up noses before, but researchers at Oregon State University have developed a microbial fuel cell that can create 10 to 50, or even 100 times more electricity per volume than similar technologies. After refining the tech for several years using new materials, techniques and selecting better microbes, the team can now extract two kilowatts per cubic meter of refuse. As bacteria oxidizes organic matter, electrons -- rather than the hydrogen or methane that other methods rely upon -- are produced and run from an anode to a cathode within the device to create an electric current. Once implementation costs are cut down, the technology could power waste treatment plants and enable them to sell excess electricity. The contraption isn't just for processing what comes out of the porcelain throne -- it can also utilize materials ranging from grass straw to beer brewing byproducts. For now, however, the cell will tackle a pilot study before it inches closer to your local brewery or water treatment facility.

  • Visualized: Sandia National Laboratories' Z machine erupts in a web of lightning

    by 
    Jon Fingas
    Jon Fingas
    08.05.2012

    Sandia National Laboratories' Z machine sounds like it belongs in a James Bond movie more than it does an Alberquerque research facility. Based on what it can do, that's not as far-fetched as it seems. What you see isn't the handiwork of some electric spider -- it's what you witness in the immediate fraction of a second after the Z's electromagnetic pulse kicks in and forks of lightning burst across the 108-foot distance inside. The pulse in question is key to Sandia's studies of fusion and the effect of very intense magnetic pressures on materials that normally refuse to change states. Even in 2006, the Z was putting out pressure more than 10 million times that of the atmosphere, and it successfully melted diamond at roughly half that strength. It goes without saying that we don't want to be anywhere near this kind of energy when scientists flick the switch, but we're glad to see that something so pretty and deadly can help us understand physics. [Image credit: Randy Montoya, Sandia National Laboratories]

  • Researcher calls platinum wrong for fuel cell development, looks elsewhere for efficiency

    by 
    Darren Murph
    Darren Murph
    07.16.2012

    Hearing that fuel cells aren't the most efficient thing in the world shouldn't take you by surprise, but a determination by one Alfred Anderson just might. The chemistry professor from Case Western Reserve University is now making a case for using something other than platinum as the "catalyst most commonly used to convert chemical energy to electricity." According to him: "Using platinum is like putting a resistor in the system." To be fair, Anderson still isn't sure which material should replace it, but he's adamant that wizards in the field should be spending their time looking for substitutes instead of tweaking platinum further. Currently, he's working with other researchers in order to find something that'll one-up what we're using today, and if you're into oodles of technobabble, you can dig into the ins and outs of his claims in the source link below.

  • First solar-geo plant blooms in Nevada's high desert

    by 
    Jason Hidalgo
    Jason Hidalgo
    07.13.2012

    Drive west on US Route 50 through a stretch of Nevada highway known as "The Loneliest Road in America" and you'll eventually find yourself in the rural county of Churchill. Once a solitary leg in the Pony Express route, irrigation transformed swaths of Churchill's high desert areas into thriving agricultural communities more than a century ago. Fast forward to today and Churchill finds itself playing host to yet another interesting dichotomy -- a first-of-its-kind power plant that generates electricity by harvesting renewable resources from both earth and sky. %Gallery-159924%

  • MIT researchers develop chip that can harvest energy from multiple sources

    by 
    Donald Melanson
    Donald Melanson
    07.09.2012

    We've seen a number of different devices that can harvest energy from various sources, but none quite like this new chip developed by a team of MIT researchers. It's able to harvest energy from three different sources simultaneously: light, heat and vibrations. The key to that is a sophisticated control system that's able to rapidly switch between the three sources at all times to prevent any of that energy from going to waste (and not draw too much power itself), with energy from the secondary sources stored in capacitors to be picked up later -- as opposed to existing systems that simply switch between sources based on what's most plentiful. As doctoral student Saurav Bandyopadhyay explains, efficiently managing those disparate sources could be a "big advantage since many of these sources are intermittent and unpredictable," and it could in turn lead to the chip being used in a range of different applications where batteries or existing energy harvesting methods just aren't enough: everything from environmental sensors in remote locations to biomedical devices.

  • Japanese group transmits electricity through 4-inch concrete block, could power cars on roads

    by 
    Zach Honig
    Zach Honig
    07.07.2012

    The decision to invest in an electric vehicle would be much easier to justify if the car in question offered unlimited range. That appears to be the concept behind a Toyohashi University research group's wireless power prototype, which can successfully transmit electricity through a 10 centimeter-thick concrete block. During a demonstration in Yokohama, Japan, the team sent between 50 and 60 watts of power through a pair of concrete blocks to two tires, which then juiced up a light bulb (you can see the rig just above). The project is called EVER (Electric Vehicle on Electrified Roadway), and could someday be used to keep cars moving along a highway without any need to pull over for a recharge, thanks to a constant stream of electricity coming from below the road. There are some serious obstacles to overcome before EVER can get some wheels turning -- namely, a need to pump nearly 100 times the current maximum load through concrete that's twice as thick as what they've managed today, not to mention improving undisclosed efficiency levels -- but the group reportedly said that it's up to the task, making us fairly optimistic that such a solution could one day get us from A to B without petrol. Until then, you'll probably want to plan out a pit stop or two before you leave the garage.

  • Sassor wants to let users know just how much electricity their gadgets are wasting (hands-on)

    by 
    Michael Gorman
    Michael Gorman
    06.18.2012

    Everyone knows that their game consoles, appliances and HDTVs are energy vampires, and while Energy Star-certified products tell us which gadgets are more green-friendly than others, we still don't know just how much juice they're actually sucking down in a given day. Enter Sassor, a start-up from Japan that's created a system to monitor the electrical consumption of anything plugged into a wall outlet -- from PCs to refrigerators. It tracks power consumption using current sensors clamped onto power cords, which communicate wirelessly via ZigBee with a module (based on an Arduino design) that uploads the info to the cloud. Through the web portal, users can track energy consumption on a per-device basis in real-time, letting them figure out which gadgets are most responsible for their sky-high utility bill -- and take appropriate steps to correct the problem. Currently, it's aimed solely at businesses, but once Sassor's on its feet, funding-wise, the plan is to also put them in people's homes. The company told us it'll ditch ZigBee in favor of a WiFi solution in such future iterations, and it'll make an SDK and the system APIs available to all so that people can program for the platform and improve it in ways currently not contemplated. Alas, there's neither a timetable nor a price for the consumer version just yet, but you can see some pictures of the hardware's innards below.

  • North Carolina approves Apple's plans for 4.8-megawatt fuel cell facility

    by 
    Steve Sande
    Steve Sande
    05.24.2012

    Things are looking green around Apple's Maiden, North Carolina data center, and it's not just due to the fact that it's springtime. The North Carolina Utilities Commission has approved (PDF) Apple's plans to construct and operate a 4.8-megawatt fuel cell facility at the data center, providing green power for at least a portion of the electricity needs of the huge location. As noted previously on TUAW, Apple will be using natural gas-powered fuel cells called Bloom Boxes to generate electricity and exhaust CO2 and water to the environment with no combustion byproducts. The natural gas will come from a local pipeline provider; that gas will be offset by purchases of biogas from another provider, keeping the power as green as possible. The installation will be the nation's biggest private fuel cell energy project. Apple already uses some of the Bloom Boxes at the Cupertino campus; manufacturer Bloom Energy is located in nearby Sunnyvale, CA. The approval of the fuel cell power plant at the Maiden facility follows a similar approval last week when Apple got the OK to build a 20-megawatt photovoltaic solar facility.

  • Researchers use virus's rogue traits to create electricity from motion

    by 
    Steve Dent
    Steve Dent
    05.15.2012

    Viruses are the swarming bullies of biology, but it turns out their alarming self-replication could one day power your iPod. We've seen them in batteries before, but researchers at Berkeley Labs have now coated electrodes with modified M13 bacteriophage, a harmless bacteria-eating virus, to create the first ever organic piezoelectric material -- which can convert force to electricity. The team explained that such a substance would be non-toxic, organize naturally into thin layers and self-regenerate, giving it a possible advantage over chemical options. In theory, by attaching a thin film of it to your shoes, power could be generated when walking, lending volts to the myriad electronics we pack around nowadays. To see a finger-powered video demo of our frequent-enemies making themselves useful for a change, stroll on past the break.

  • Honda test house features Smart Home System for controlling energy usage

    by 
    Sarah Silbert
    Sarah Silbert
    05.01.2012

    The term "smart home" seems to turn up in tech circles every so often, only to fade into the background again without much sign of ultra-connected dwellings becoming a reality. Honda's at least putting one foot forward, with a just-unveiled test house in Saitama, Japan featuring a system for controlling and monitoring energy usage. The Honda Smart Home System (HSHS) consists of thin-film solar cell panels, a rechargeable home battery unit, gas and hot water supply systems and the Smart e Mix Manager. The latter is the central part of the energy-control system, and it keeps track of all the other components in addition to monitoring the home's use of power supplied by the grid. In emergency situations, it can also provide electricity via the home battery unit. On the day-to-day level, however, the system is there to let home owners know what sources of power they can kill. Honda also integrates its Japan-only Internavi system for controlling home appliances remotely. The car maker hopes to use the house for extensive demo testing, with an ultimate goal of reducing CO2 emissions by 50 percent. No word on how many decades till we actually call this sort of place home, though. Click on past the break for a look (in Japanese) at the test home's features.

  • Tesla pairs up with SolarCity, will power off-grid homes as well as cars

    by 
    Steve Dent
    Steve Dent
    04.18.2012

    If you've ever dreamed of thumbing your nose at big energy and its expensive, polluting ways, then Tesla and a solar panel leasing company called SolarCity might be taking you a baby-step closer to reality. Although recognized mostly for its EVs, Tesla reckons it knows enough about batteries to solve a key problem in the solar energy chain -- namely the storage of power for use when the sun, power grid, or both go offline. The battery design, consisting of many laptop-style lithium ion batteries stacked together, was chosen after two years of research and a $1.8 million energy grant. The two companies are now waiting for tax credits from the Fed and California before rolling out the tech. And being kissing cousins -- with Elon Musk as both Chairman of SolarCity and CEO of Tesla -- certainly can't hurt.

  • Philips' L Prize-winning light bulb goes on sale Sunday, priced between $20 and $60

    by 
    Darren Murph
    Darren Murph
    04.17.2012

    It's a little strange crowning a "winner" when only a single company enters the contest, but that's exactly what happened during the L Prize celebration in August of last year. Philips was the only outfit to take the US Department of Energy up on its offer, earning some $10 million to develop what might go down as the most radically designed, wildly expensive bulb your table lamp has ever seen. That said, the victorious bulb is a big fan of Ma Earth (and her of him), using just 10 watts of energy while outputting light similar to that of a 60 watt incandescent. It'll hit retailers like Home Depot this Sunday (Earth Day) for around $50 a pop, while some utility companies may subsidize 'em in an effort to hit the magical $20 price point. Hey, no one said saving energy would be remotely affordable, right?

  • Insert Coin: The PowerPot portable electric generator (video)

    by 
    Zach Honig
    Zach Honig
    04.10.2012

    In Insert Coin, we look at an exciting new tech project that requires funding before it can hit production. If you'd like to pitch a project, please send us a tip with "Insert Coin" as the subject line. Assuming you're not getting through the day with a bounty of fuel cell-powered gadgets, you've probably been in a situation where you needed power and it was nowhere to be found. The PowerPot isn't the most practical solution for every scenario, but it's likely to come in handy at least once. The power-generating pot uses thermoelectric modules to convert temperature differences into a 5-, 10- or 15-watt regulated power stream, sufficient for juicing up USB devices like smartphones, GPS devices and LED lamps. The most traditional method for creating this temperature difference is to put a pot of cold water over an open flame, but the device is adaptable to other configurations -- a pot of snow on a thermal spring, for example. Assuming you've taken the fire approach, you can also use the pot to boil water or cook food as you charge your gadgets. The inventor has created a functional prototype that features fire-proof components and looks quite polished, but now the team is turning to Kickstarter to advance the project to production. Your pledge could net you any of a variety of PowerPots, ranging from a 5-watt portable V flavor for $125 to the 15-watt XV for $500. You can also pre-order a 10-watt PowerPot X for $199. If you're feeling generous, there's also an option to donate a PowerPot to folks in developing nations who may not have the cash to spare, but are in need of a cost-effective solution for power generation. Jump past the break to see the PowerPot V in action, and hit up the source link to scroll through the available configs before making your pledge.

  • Delaware Ph.D. student hopes to solve energy woes with renewable hydrogen production

    by 
    Zachary Lutz
    Zachary Lutz
    04.05.2012

    Hydrogen fuel is a fickle mistress. On one hand, it teases us with the promise of renewable energy and a cleaner tomorrow. On the other hand, it's most often produced with natural gas as the source -- hardly the clean break from fossil fuels that many had envisioned. Fortunately, there are other methods to harness this abundant element, and a doctoral student at the University of Delaware may have created a worthwhile process. Similar to previous research we've seen -- which relies on ceric oxide and energy from the sun -- Eric Koepf has designed a reactor that combines zinc oxide powder, solar rays and water to derive hydrogen as a storable energy source. Most intriguing, it's thought that the zinc oxide byproduct from the reaction will be reusable -- a potential gateway to sustainable energy. Koepf will spend the next six weeks in Zurich at the Swiss Federal Institute of Technology, where his reactor prototype will be put through its paces to determine its efficiency and effectiveness. If successful, his advisors envision that one day, we may see giant versions of Koepf's reactors producing hydrogen on an industrial scale. We certainly won't fault them for dreaming big.

  • Researchers create incredibly thin solar cells flexible enough to wrap around a human hair

    by 
    Zach Honig
    Zach Honig
    04.04.2012

    You've probably heard that the sun is strong enough to power our planet many times over, but without a practical method of harnessing that energy, there's no way to take full advantage. An incredibly thin and light solar cell could go a long way to accomplishing that on a smaller scale, however, making the latest device from researchers from the University of Austria and the University of Tokyo a fairly significant discovery. Scientists were able to create an ultra-thin solar cell that measures just 1.9 micrometers thick -- roughly one-tenth the size of the next device. Not only is the sample slim -- composed of electrodes mounted on plastic foil, rather than glass -- it's also incredibly flexible, able to be wrapped around a single strand of human hair (which, believe it or not, is nearly 20 times thicker). The scalable cell could replace batteries in lighting, display and medical applications, and may be ready to be put to use in as few as five years. There's a bounty of physical measurement and efficiency data at the source link below, so grab those reading glasses and click on past the break.

  • Facebook inks partnership with Opower, looks to socially compare home energy usage

    by 
    Darren Murph
    Darren Murph
    04.03.2012

    Google passed, and Microsoft reckoned it had better things to do, but Zuckerberg's Castle is seemingly willing to pick up where those two left off. In what may go down as the strangest Facebook decision since the rejection of Valentina Monetta's video as best in the whole wide world, the company is launching a new social energy app that'll tap into technology from the National Resources Defense Council and Opower. Initially, the app will reach some 20 million households, and it's designed to help eco-curious Earthlings compile and benchmark usage data to see how their home stacks up against others. Within territories with utility participation, people can connect their utility account directly to the app to track progress and share energy saving accomplishments with friends. Unfortunately, the whole process looks rather manual for now, and privacy overlords will no doubt question the motives for requesting even more information from Facebook users; that said, it's totally possible to engage in the Opower tracking sans a Facebook account. To get going, give those source links a look.

  • Sandia Labs develops self monitoring smart outlet, still needs you to plug it in

    by 
    James Trew
    James Trew
    03.01.2012

    The folk at Sandia Labs work on all sorts of interesting projects, and the latest thing to fan our utopian dreams is this experimental smart power outlet. Unlike most monitoring set-ups, it can measure and control electric load without being connected to a central management system. The outlet comprises four receptacles, each with voltage and current sensors and a small computer which shuttles data over an Ethernet bridge. This autonomous style of operation could lead to more intelligent power grids that self-monitor, adapt and integrate with other grids without complex infrastructure updates. Other benefits include removing large points of failure, desirable in any network, and simpler home power monitoring systems. Sandia Labs' prototype could also improve effectiveness of variable output energy sources such as wind and solar, thanks to its ability to compensate for flux in energy production -- which might come in handy.