solar energy
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Duke study finds solar power cheaper than nuclear, Coach K stronger than Roy
Now, before you get all hot and bothered here, we should warn you that this study only uses information from within the great state of North Carolina (where Duke University is based, obviously), but the results are intriguing regardless. According to new data, the moment we're living in is a crossover one where the declining prices of solar panels may actually make sun-based energy more cost efficient to consider than nuclear. Duke found that the crossover price point was at around 16 cents per kilowatt hour (kWh), and for the first time ever in NC, the cost of one kWh of electricity from solar energy sunk below that. Of course, these results are apt to be even more impressive in sun-rich states like Arizona, Nevada and Utah, but it's fairly clear what the real purpose of the investigation was: convincing the school to shell out for solar panels to energize Krzyzewskiville during week-long campouts for UNC vs. Duke tickets.
IKAROS gets first burst of solar propulsion, wants more
Photons, man, it's all about the photons. Japan's solar sail-equipped IKAROS probe has recorded its first propulsion derived from the force of sunlight rays hitting its tender surface. The force generated is a truly minuscule 1.12 millinewtons, but that can go a long way (literally) in a frictionless environment like space. The kite's sails also soak up Sol's emitted light to generate electricity, making the most out of the one resource available to it. So now that we've figured out how to do all that, shall we get started on colonizing Mars or what?
Solar Impulse returns from 24 hour test flight 26 hours later
Rest easy, fans of solar-powered aeronautics. Captain Piccard's Solar Impulse has safely returned after 26 hours in the air -- powered by nothing but the sun. The four-engine aircraft, which features 12,000 solar cells arranged on its wingspan, reached a height of almost 29,000 feet before touching down at Payerne Airport near Berne, Switzerland today. The next step? The team is going back to the woodshed, with the hope of developing a plane that will circumnavigate the globe by 2013.
Solar Impulse begins 24-hour test flight, lets you watch the whole thing live
Boy, these Franco-Swiss research teams sure do like to exhibit their work to the world. After the Large Hadron Collider crew did a live webcast of their record-breaking 7 TeV proton collisions, here's Captain Piccard's Solar Impulse gang showing off their latest feat via a live video stream. Taking off shortly before 7AM Central European Time today, the HB-SIA craft is currently cruising above the idyllic plains of Switzerland, with the plan being for it to start gently descending through the night and plopping itself back down on terra firma early in the morning. Hit the source link to track its laps in real time, replete with sporadic commentary from the monitoring crew. It's riveting stuff.
Inhabitat's Week in Green: a US team wins the Solar Decathlon!
Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us. This week Inhabitat reported live from the scene of the Solar Decathlon in Madrid as 17 stunning solar-powered houses competed for the title of the world's most energy-efficient prefabricated house. The winner was just announced this evening and we're thrilled to see that an American team won: Virginia Tech's shape-shifting Lumenhaus. Considering that German teams have won the American Solar Decathlon for three years running now, we're really proud of the Virginia Tech team for their big win! We're also happy to see that several of our favorite solar houses from the show made it to the top ranks, including Germany's elegant IKAROS house, the ultra-efficient Armadillo Box, and Finland's beautiful wooden Luukku house. We also watched sustainable transportation soar to new heights this week as the world's first solar-powered blimp prepares to fly across the English Channel. Not to be outdone, the US Army unveiled plans for an ultra-long range hybrid airship that is capable of flying for three weeks at a time. In other news, renewable energy is heating up around the globe as the EU recently announced that it will import solar energy from the Sahara Desert within 5 years. We also saw a beautiful solar powered flower sprout in Southern California and looked at the worlds first solar-powered soccer ball, which could help the blind play soccer. Finally, we caught wind of an innovative breathing mask that filters CO2 from the air, converts it into energy, and stores it to power a cellphone or portable music player.
Toshiba's Charge Grid puts your solar panels to work, smartly charges your EV
Got a bunch of photovoltaic cells and a vehicle that requires electricity? Toshiba's thought up a process dubbed "Charge Grid" by which you can juice the latter efficiently. When the sun's out and the electrons are flowing, it doesn't pay to put them into the grid, so this system stores them in a rechargeable battery ready to rapidly charge your EV. For nighttime when the electricity rates are low, a bidirectional inverter lets you hop right back on the neighborhood grid, so your solar cells are put to good use and your car is always well fed. The company tells Tech-On commercialization of the system is still a few years away, so you've plenty of time to raze that roof antenna in favor of some photosynthesized electricity.
Geely IG is covered in solar cells, two years away from marketability
Chinese carmaker Geely is no stranger to building derivative designs, and its latest PHEV effort takes so much inspiration from Volkswagen's Beetle that even the press release begins with a metaphor about caterpillars flourishing into butterflies. That's also a little nod to the car's development, which has seen its initial design overhauled into the four-seater, photovoltaic cell-laden transporter you see above. The powertrain is still a hybrid number and not entirely electric, but seagull-wing doors have been added for some extra flair. Geely's IG is currently on display at the Beijing Auto Show, alongside its all-electric EK-1 and EK-2 brethren, the latter of which is promised to deliver 150kmph top speeds together with 180km cruising ranges and an 18-minute recharge time for 80 percent of the battery capacity. We'll believe it when we see it. This trifecta, along with a pair of other alternative fuel vehicles, is slated to "be marketed" in two years' time. You can wait that long, can't you?
Captain Piccard's Solar Impulse completes first full test flight, nears another frontier (video)
We've tracked this solar-powered tub from its announcement last year, through its first runway tests, past the little hop that counted as its first flight, and now we've arrived at the HB-SIA's first legitimate test flight. The Solar Impulse, brainchild of one Bertrand Piccard, took the upward plunge into the skies yesterday, successfully rising to 5,500 feet and a speed of 30 knots before gliding down gently and calling the whole thing an unqualified success. You can find video of the event after the break. A nighttime test flight is planned for later this year, after which a bulkier production model will be cobbled together with the intent of reaching the final goal of circumnavigating the globe by 2012.
PlanetSolar boat aims for Earth circumnavigation with Sun's help, enters testing stage (video)
You'll be forgiven for letting the PlanetSolar boat slip your mind in the year that's passed since we last heard of it, but the engineers behind the project haven't been slacking and today we're hearing that the multihull vessel has been put into the water to begin its seafaring tests. With nearly 5,400 square feet of photovoltaic cells adorning its roof, this is by far the biggest and most ambitious solar-powered boat yet, so it's no surprise that it won't be casting off on its globe circumnavigation attempt until at least April 2011. For now, you can enjoy photos of the vast ray-muncher at the PlanetSolar link below or skip past the break for the latest video from the team. [Thanks, Pavel]
Solar flares set to wreak havoc on GPS signals
The sun's activity isn't usually a hot topic around these parts, but when it threatens to derail satellite navigation services around the world, it must surely take center stage. UK researchers have corroborated Cornell's 2006 warning that our solar system's main life-giver is about to wake up and head toward a new solar maximum -- a period of elevated surface activity and radiation. It is precisely that radiation, which can be perceived in the form of solar flares, that worries people with respect to GPS signaling, as its effects on the Earth's ionosphere are likely to cause delays in data transmission from satellites to receivers and thereby result in triangulation errors. Still, it's more likely to be "troublesome than dangerous," but inaccuracies of around 10 meters and signal blackouts that could last for hours are being forecast in the absence of any intervening steps being taken. So yes, you now have another reason not to trust your GPS too much. [Thanks, Mike]
Photovoltaic circuit makes solar-powered touchscreens possible, not yet plausible
What's cooler than the latest in technology? How about the latest in self-powering technology? University of Pennsylvania researchers have put together what seems like the world's first photovoltaic circuit, which is to say that the electronic parts of your devices will no longer have to just consume energy, they'll be able to harvest it directly from the sun. The most obvious application for this would be in smartphone touchscreens, which could recharge themselves while you sip your latte at the local sun-drenched coffee shop. Of course, such practical uses are still a fair distance away, as the team can generate only minuscule amounts of power at present, but the theory is in place and so is our attention. Don't let us down, Penn!
Ontario and Samsung seal $6.7 billion renewable energy deal
Need to know how much it would cost you and your town to generate 2,500 megawatts of pure green energy? Your wind and solar farm infrastructure costs will come to 7 billion CAD (just under 6.7 billion in US currency), which includes a 437 million CAD "sweetener" to get Samsung on board. Plenty of curmudgeons have emerged from the woodwork to trash the deal as costing above market prices, but this appears to be the largest venture of its kind, so we're not entirely sure "market prices" exist yet. For its part, Samsung will create 16,000 jobs in the area, 4,000 of them permanent, as it builds toward the stated goal of providing enough energy to fully power 4 percent of Ontario's population. [Thanks, Dan]
Captain Piccard's Solar Impulse takes flight
They said it couldn't be done. They laughed and questioned what would happen when the sun sets, but the man whose passport reads Piccard, Bertrand, and whose bold will and bald helm match a similarly named Capitaine, has now overseen the first solar-powered flight on the Solar Impulse HB-SIA. Okay, so it was 1,150 feet flown at a meter above ground level, but that's just classic Swiss caution for you, no reason not to celebrate the fact that there's now a flying tub powered purely by solar energy and promising a future of aircraft operating indefinitely -- so long as the sun doesn't forget to rise every morning. This comes mere days after the first runway tests were carried out, leading us to believe that this is one mission with a glorious chance of success.
Captain Piccard's Solar Impulse starts runway testing
Good news, kids -- the solar-powered jet with globetrotting ambitions has started sneaking out of the hangar and onto the runway for some mild exercise in the form of landing gear and taxi testing. Captained by Bertrand Piccard -- a real person -- the Solar Impulse project is still on track for a 2012 globe circumnavigation attempt powered only by the sun's rays from above and the well-wishes from below. The humongous bird is described as having "the wingspan of an Airbus and the weight of a car," and its recent outdoorsy jaunts have done nothing to dampen spirits, making that roadmap for its first flight early next year seem entirely viable. We've got no less than three videos for you after the break, but we won't mind if you only watch one.
Dell and Envision Solar refashion parking lot into clean energy farm, EV recharge station (video)
Dell has added a shiny new feather to its cap today with the announcement of a freshly completed Solar Grove renewable energy installation. The system is composed of 512 solar panels, which provide shelter for 56 cars, and are capable of harvesting 131,000 kWh of energy per year. This power will be primarily used in the adjacent Round Rock HQ, but CleanCharge stations will also be available should you wish to juice up your electric vehicle on Mother Nature's finest. No matter how much Dell might have splashed out to bring this integration together, we can't help but suspect that the smug satisfaction of getting free energy -- both in pecuniary and ecological terms -- must be priceless. Video awaits after the break.
Sharp solar cell sets Conversion Efficiency record
The kids at Sharp have a long history of solar power development and research -- something which is evident in the solar cells they've attached to everything from televisions to cellphones. Always moving onward and upwards, the company is now announcing that it's achieved a title-holding 35.8 percent cell conversion efficiency through the use of a triple-junction compound cell. Mainly used on satellites, the triple-junction cell uses three photo-absorption layers and materials (such as indium gallium arsenide) to boost efficiency. This is all good news indeed for both people anticipating better solar devices and fans of solar research in general -- and great news for the people that make those 18 foot tall "solar flowers." PR after the break. [Via Akihabara]
Video: Solar-powered night garden fills Jerusalem with tranquility, world peace soon to follow
Juxtaposing the manmade and the natural in artistic expression oftentimes leads to creepy results. It is no mean feat, then, that the Jerusalem night garden -- built out of steel wires, laser-cut panels and 1W to 3W Power LEDs -- feels like a warm and welcoming place to visit. Whether it is the clean energy source, producing 720W of electricity per hour, or the ethereal light and movement of the flowers, something about the exhibition awakens the wistful child we've got locked away in the Engadget dungeons. He cries out for more of this aesthetically pleasing eco-friendly design, which in this case even comes with a specially composed soundtrack. To see if you agree with such juvenile enthusiasm, check out the video after the break.[Via inhabitat]
Baby steps: new solar cell efficiency record isn't awe-inspiring
Granted, we've no idea what it takes to really push the efficiency level of a solar cell, but we're getting pretty bored with these incremental improvements year after year. If you'll recall, the record for solar cell efficiency sat at 40.7 percent in 2006, and that was raised to an amazing 40.8 percent last August. Today, researchers at the Fraunhofer Institute for Solar Energy Systems have announced an all new milestone: 41.1 percent efficiency. According to team head Frank Dimroth, the crew is simply "elated by this breakthrough." Meanwhile, the rest of planet Earth is suddenly depressed by the thought of perishing from old age before this data point ever breaks the big five-oh.[Via Gizmag]
Kinesis K2 solar / wind charger hands-on: Captain Planet approved
Kinesis' K2 solar / wind charger will power any USB device and is guaranteed to disappoint people mistaking it for a handheld fan. Of course, if you're feeling less environmental, feel free plug it into an AC outlet to reenergize the thing. Anticipating popular demand, we've put video after the break.%Gallery-41422%[Via OhGizmo!]
KDDI au concept phones explained and pictured
We got the low-down (well, at much of a low-down as one can get from thematic designers) on KDDI's latest au concept phones here at CEATEC, and the themes are -- are you sitting down? -- space and soup atomic elements. No, we didn't make that up. If you're still with us, hit the break for some pictures and explanations.
