electricity
Latest
Your old laptop's battery will light homes in developing countries
Don't be too quick to toss out the battery from that ancient laptop -- it might just be the key to powering homes in developing countries, and helping the environment in the process. IBM researchers have revealed UrJar, a device that turns old lithium-ion battery packs into rechargeable energy sources for low-power devices like LED light bulbs, fans and cellphones. To create the gadget, the team extracts functioning lithium-ion cells from a trashed battery and combines them with both charging dongles and safety circuitry. It sounds simple, but it's potentially very effective. According to IBM, roughly 70 percent of all discarded batteries can provide at least four hours of LED lighting every day for a year. That's enough to offer extra safety to homes in areas with little to no reliable electricity, or to keep a street vendor in business after sunset.
The world's largest solar power plant is now up and running
Solar power just hit one of its biggest milestones, in more ways than one. First Solar recently finished building Topaz, a 550-megawatt plant that represents the largest active solar farm on the planet. And we do mean large -- the installation's nine million solar panels cover 9.5 square miles of California's Carrizo Plain. It's an impressive feat that should power 160,000 homes on Pacific Gas and Electric's grid, although it won't be alone at the top for very long. First Solar's Desert Sunlight farm will match that capacity once its last solar cells go online, and SunPower's 579MW Solar Star is due to go live in 2015. Not that there's a problem with that, of course. These solar plants have been a long time coming, and they promise eco-friendly energy for hundreds of thousands of Golden State residents. [Image credit: Center for Land Use Interpretation]
WiTricity's CEO paints a picture of a wirelessly powered future
If WiTricity CEO Alex Gruzen gets his way, the company's tech will soon wind up in your phone, your car and even inside your body. That's because the Massachusetts-based company deals in magnetic resonance technology, and if those words don't mean anything to you now, they probably will before long. You see, WiTricity has been working for the past five years on a way to wirelessly transfer power between devices, and Gruzen told our audience at Engadget Expand NY that the wireless future is basically right around the corner.
You can steal data from a computer by touching it
Normally, breaking a PC's security involves either finding security exploits or launching brute force attacks, neither of which is necessarily quick or easy. However, a team at Tel Aviv University has come up with a potentially much simpler way to swipe data from a computer: touch it. If you make contact with a PC while you're wearing a digitizer wristband, you can measure tiny changes in electrical potential that reveal even stronger encryption keys (such as a 4,096-bit RSA key). You don't even have to touch the system directly in some cases -- researchers also intercepted keys from attached network and video cables.
This bacteria eats nothing but electricity to survive
All life is ultimately powered by electricity, albeit indirectly, since most organisms consume sugars that produce electrochemical reactions. Several types of bacteria are known to skip the sweets and go straight for the electrons, however -- and researchers have discovered that they may be everywhere. The New Scientist reported that biologists have grown bacteria (Mariprofundus ferrooxydans PV-1) that harvest electrons directly from iron electrodes. Several species were literally teased out of soil from a seabed floor and deep well in Death Valley, California, just by applying a charge to the ground. In a lab environment, a separate team found that they can be kept alive exclusively with electricity and no other sugars or other nutrients (see the video, below).
MIT researchers want to power your cellphone with dew
Water is pretty wild when you think about it: all of its three states of matter are consumable by humans, and one in particular can even give off electrical power. A team at the Massachusetts Institute of Technology has discovered that when water condenses on and spontaneously jumps back and forth between specially-treated copper plates, it picks up an electrical charge. To fully take advantage of this ability, said scientists built a machine that harnesses said charge and uses it to create electricity. The researchers admit that yield is low for now, predicting that a cellphone would take around 12 hours to fully charge, but, as MIT News points out, if you're off the grid, there isn't much else of a choice for electricity anyway. One possible drawback of this method, though, is that it inherently requires a humid environment, like a rainforest, for it to work. We'd imagine that a New York summer would suffice, too. [Image credit: paul goyette/Flickr]
Generating power from heat will soon be dirt cheap
You could power your car's cooling AC using wasted heat, ironically, without a solar panel in sight.
Germany's green energy boom is leaving a 'trail of blood' on coal companies
Since the beginning, the commercial growth of renewable energy has been a laborious, often painful matter of government pushes, tax incentives and campaigning for greater awareness. In Germany, however, the energy market is on the cusp of evolving to the next step: An era in which the sun and the wind replace fossil fuels through the sheer, unstoppable force of the market.
Tesla Motors' Elon Musk will help fund a Nikola Tesla museum
You may recall The Oatmeal's (aka Matthew Inman's) fundraising campaign to save Nikola Tesla's former lab and get a museum built in the electrical pioneer's honor. Well, it only partly succeeded; while the money was enough to rescue the property, Inman realized that it would take at least $8 million to build and maintain an actual museum. Thankfully, a little serendipity is coming his way. Following a public plea from Inman, Tesla Motors chief Elon Musk now says that he'll be "happy to help" make the museum a reality and pay tribute to his company's namesake.
Google wants your help making cheaper, tinier solar power systems
Solar panels have become cheaper and more efficient in recent years, but you can't say the same for the big, costly inverters turning their energy into usable electricity. Google isn't happy with this lack of progress, so it's about to launch the Little Box Challenge, an open competition to build a tiny (and consequently cheaper) solar power inverter. The search giant is promising $1 million to whoever cracks the problem, although it warns that this won't be easy; don't expect to reach a breakthrough in your basement. If someone does produce this miniscule power box, though, it could lead to eco-friendly energy in places where it's currently unaffordable or otherwise impractical -- whether it's a remote village or your own rooftop. [Image credit: Getty Images]
We may soon use lasers to redirect lightning strikes
If there's one thing you should know about Engadget, it's that we absolutely love lasers. And thanks to the University of Arizona and University of Central Florida, our favorite pulsating form of light might soon find a much less destructive purpose, than say on Navy ships, anti-missile airliners and X-Men goggles. Instead of using a lightning rod to transport the average bolt of lightning (and its 1 billion joules of energy) safely into the ground, researchers believe that by using specially designed laser beams, the path of Zeus' thunderbolt can be redirected entirely. Lasers, when traveling through air, leave an ionized gas (plasma) with little to no electric charge. And since lightning travels in the path of least resistance, its charge would theoretically be given a new course. To accomplish such a feat, two different lasers must work together to form what's known as an "externally refuelled optical filament." The first, lower-power beam cuts through the atmosphere, while the second, higher-power beam "refuels" the other so that it doesn't lose focus. What's the catch? So far, those in white coats have only produced a working plasma that's seven feet long since the team started creating curved laser beams in 2009. But refined, this technology could offer much more efficient lightning protection. Who knows, we might be one step closer to harvesting the power of thunderstorms.
US military tries using small electric jolts to keep soldiers awake
Soldiers don't have many options for overcoming sleep deprivation outside of a good cup of coffee. If the Air Force Research Laboratory's experiments prove successful, though, troops may rely on tiny jolts of electricity to stay alert. By using a mild current to stimulate key parts of the brain, the military's scientists can keep people awake and focused for long periods -- up to 30 hours in recent trials. The existing technique produces modest side effects like skin irritation and short headaches, and it's unlikely to reach civilians any time soon. However, a refined version could eventually prove crucial to drone pilots and other warriors who can't afford to take naps during crucial missions. [Image credit: John Kricfalusi]
Biggest-ever solar thermal power plant goes online in California
Solar power just hit the big time in the US -- BrightSource Energy has confirmed that the world's largest solar thermal plant, the Ivanpah Solar Electric Generating System in California, is up and running. The array, also backed by Google and NRG Energy, produces a total 392MW of power through 173,500 multi-mirror units. That's enough to power 140,000 nearby homes, and it represents 30 percent of all the solar thermal energy in the US. The Ivanpah harvester has its drawbacks; with roughly 5.5 square miles of mirrors, it's creating trouble for birds and other nearby wildlife. Even so, it represents an important breakthrough for delivering clean energy on a grand scale.
Finally, a light switch so green it doesn't need electricity
It's not very often that a light switch really catches Engadget's eye, so you know it has to be something clever to show up on our virtual pages. This particular lightbulb activation device (as demonstrated by NXP) is not only wireless, it's powerless -- we were able to turn on a wireless lightbulb simply by tapping on the switch itself, without requiring an external power source. This one single action alone actually generates just barely enough power to push a signal to the bulb. The unit we played with also utilizes NFC to pair wirelessly with a light source. All told, it worked without a hitch, and the tech is currently being sampled out to manufacturers. This means we'll likely start seeing devices take advantage of this setup sometime this year, so be on the lookout for more details as they come out.
Upp is a $199 hydrogen fuel cell for USB devices that lets you fill up instead of plugging in
Hydrogen fuel cells have been helping astronauts for nearly half a century already, so it's about time they became small enough -- and cheap enough -- to be of use to everyone else. That's exactly what Intelligent Energy claims to have achieved with its the latest fuel cell system, called the "Upp." At 500 grams and with a retail price of $199, it's not meant to compete with regular lithium ion battery packs -- in fact, the Upp behaves very differently. For a start, you don't need to charge it. You just slap on a hydrogen cartridge and it's ready instantaneously. One cartridge yields around five charges for a smartphone, with each charge taking no longer than a mains USB charger would. When you're running low, an accompanying app either triggers the delivery of a new cartridge (perhaps by courier, if you've signed up to that sort of service) or directs you to the nearest store so you can exchange it. Unlike some other personal fuel cells we've seen, the Upp is a finished product that is ready for sale: the version we tried is ruggedly built and designed to work in the high temperatures of sub-Saharan Africa, where it'll initially be sold by mobile operators to customers in areas with unreliable electricity infrastructure. Check out our hands-on video to see it in action.
Google keeps it green, purchases 240MW of wind power in Texas
Google's goal of meeting its electrical needs with renewable sources got another big boost today. The Happy Hereford wind farm in Texas will produce 240 megawatts of juice, and all of that output has been bought by Big G. That power won't flow directly from the turbines into Google's data centers, instead it'll be fed into the regional grid when Google sells the energy on the wholesale market. The 240 renewable energy certificates (REC) acquired in the deal will be retired in support of mother earth, and any additional REC's created by the wind farm will be used to "reduce our [Google's] carbon footprint elsewhere." According to Google, this is similar to other green energy deals it's done in Iowa and Oklahoma, so it's highly likely we'll be seeing more such deals in the not-so-distant future. Of course, no one will be receiving any of that Happy Hereford wind power just yet -- the farm won't be sending out any renewably-sourced electrons until late 2014.
Insert Coin: MeterPlug estimates electricity costs per device, aims to save you some cash
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. Decking out homes with smartphone-controlled appliances and using gadgets to keep tabs on electricity usage isn't exactly new, but the MeterPlug thinks it can do a better job of tracking exactly how much dough your devices are burning in electricity. The plastic dongle plugs in-between an outlet and a device, and leverages a database of electricity prices based on location and time of day to calculate how much an appliance drains from your wallet per hour, day, week, month and year. With the help of Bluetooth, MeterPlug slings data to an Android or iOS app, and shoots updated meter information -- stored inside built-in memory -- as you come into range. Sure, Bluetooth connectivity only allows for connected devices within 100 feet to be manually switched on and off through the app, but it also gives users the option of proximity control. MeterPlug can cut power to whatever is jacked in as users wander away, and restore juice when they walk back into range.
IBM announces Smarter Energy Research Institute, aims to improve energy grids (video)
IBM is no stranger to energy concerns, and now its founded the Smarter Energy Research Institute in partnership with Canada's Hydro-Québec, the Netherlands' Alliander, and the US' DTE Energy to help build a better grid. The partnership will leverage Big Blue's computing and analytic oomph to help the utility companies predict and detect anomalies within infrastructure, identify areas of the grid that need to be developed, integrate new energy sources and increase efficiency among other improvements. What's this mean for you? For one, power outages should be less frequent and shorter lived when they do occur. Thanks to the distributed nature of the project, research will be spread throughout IBM's worldwide network of research labs. If you'd like to hear more details straight from the folks involved, hit the jump for a video and the full press release.
Google data center in Oklahoma to get 48MW of wind power, boost renewable energy in the Sooner state
Google has made a point of relying on renewable resources for its data centers whenever possible, even down to the cooling. It hasn't had quite as unique an arrangement as what it's planning for its data center in Oklahoma, though. The search firm wants to supply its Mayes County location with 48MW of wind energy from Apex's Canadian Hills Wind Project, but it isn't buying power directly from the source. Instead, it's making a deal with the Grand River Dam Authority, a utility, to purchase the clean power on top of what's already supplied from the GRDA at present. The deal should keep the data center on the environmentally friendly side while giving it room to grow. Wind power will come online at Google's facility once the Canadian Hills effort is up and running later in 2012; hopefully, that gives us enough time to better understand why there's a Canadian River and Canadian Hills to be found in the southern United States.
Sharp unveils semi-transparent solar panels, lets you see the sun while reaping its benefits
Sharp has announced an unusual photovoltaic panel for the Japanese market that collects energy from the sun while still allowing the light to shine on through. Though it's rated at a lowly 6.8 percent / 98 watt max efficiency, the glass-like properties make it useful as a construction material (as shown in the balcony railing above), with the semi-transparent nature giving occupants privacy, to boot. The energy-producing cells are embedded in a laminated glass structure and an air slot provides a thermal barrier, allowing the panels to also be used as "windows, curtain wall and eaves" according to Sharp's PR. Though the system won't win any potency prizes, it has garnered a design award in Japan, so it won't blight any landscapes. There's no mention of pricing or western availability so far, but you can hit the source for all the technical details.
