World's Biggest Wind Turbine Generates 10 MW And It Floats!

by Jerry James Stone, San Francisco, CA

Photo courtesy of Trends Updates (this is not a picture of the actual turbine)

In an attempt to make offshore wind farms more profitable, Norway plans to build the world's largest turbine standing 533 feet tall with a rotor diameter of 475 feet. It will also be the most powerful by generating 10-megawatts to power over 2,000 homes, making it three times more powerful than current turbines.

"We are aiming to install it in 2011," said Enova's head of new technology, Kjell Olav Skoelsvik. The prototype will cost $67.5 million to build and Enova's committed to $23 million of it.

The power gain comes from reducing the weight and number of moving parts in the turbine--it uses a gearless generator system.

It will be built by the Norwegian company Sway and tested first on land in Oeygarden, southwestern Norway. Unlike most offshore wind projects where turbines rest on the seafloor, Sway turbines float. This means further offshore development where winds are stronger and more consistent.

The floating tower is a pole filled with ballast beneath the water creating low center of gravity. Anchored to the seabed with a single pipe and a suction anchor, it can tilt 5-8°, and turn around with the wind.

The Scandinavian country is one of the world's top oil and gas producers but obtains most of its own energy through hydroelectric power. Hopefully this turbine can give offshore farms the revolution they deserve.

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Source: Grist

One Danish Island Experiments with Clean Power [+Slide Show]

scientificamerican.com — One small island in Denmark is technically 100 percent powered by sustainable sources of energy. Could the experiment succeed anywhere else?

Click here to read this fascinating Green Article:   One Danish Island Experiments with Clean Power [+Slide Show]

EU energy plans favour solar power

By David Amstell

Solar Power in Europe

The EU has big plans for its renewable energy future, and much attention has thus far been directed towards wind generated power, with nations such as the UK and Germany leading the way in making the most of Europe's wind potential. For this reason, the European Commission's latest plan to reduce carbon emissions by pumping a huge slice of the 50 billion euros available for research and development into solar power, may raise a few eyebrows.

Power generated from solar panels and carbon capture-and-store technology are the two major components of the EU's plans, as the commission tries to demonstrate how it is taking the necessary steps to meet ambitious carbon cutting targets. The plan, due to be released tomorrow, is a direct attempt to raise the EU's profile before the UN summit meeting in Copenhagen in December on reaching a new global agreement to curb climate change.

Even as the world emerges from a financial crisis, a new order in the region is in motion as companies are being increasingly encouraged to invest heavily in clean energy technology. "Markets and energy companies acting on their own are unlikely to be able to deliver the needed technological breakthroughs within a sufficiently short time span to meet the EU's energy and climate policy goals," the commission said in a draft of the plan obtained by the International Herald Tribune.

While 50 billion euros may seem like a tall order with the economy barely out of recession, experts agree that the large-scale investment will pay off. The market for the technology is exploding, offering the prospect of massive earnings and millions of jobs for countries that take an early lead.

"Increasing smart investment in research today is an opportunity to develop new sources of growth, to green our economy and to ensure the EU's competitiveness when we come out of the crisis," said Janez Potočnik, commissioner for science and research.

The plan, still in its early stages of development, will come in addition to the costly cap and trade system used to regulate greenhouse gases that are already in place. Some of the 27 EU member countries also tax carbon dioxide emissions associated with heating homes and running cars.

In a plan for allocating the money, the commission calls for 16 billion euros for solar power over the next 10 years, 13 billion euros for carbon capture and storage, seven billion euros for nuclear and six billion euros for wind.

However, as much as the commission's plans are a sign of the regions commitment to the fight against climate change, environmentalists cannot be entirely happy with the significant commitment also made to carbon-capture technologies. But the commission argues this is totally necessary in order for Europe to meet its carbon-cutting targets and remain competitive.

But the plans to drive forward with the development of European solar power will no doubt be welcomed by environmentalists.

Watermelon Juice: The New Fuel?

Fill 'er Up | Discovery News Video

Aug. 26, 2009 -- A staple of backyard barbecues and summer time snacks, watermelon is also a promising new source of renewable energy.

According to a new study, leftover watermelons from farms' harvests could be converted into up to 9.4 million liters (2.5 million gallons) of clean, renewable ethanol fuel every year destined for your car, truck, or airplane's gas tank.

Agriculturally, watermelon is a peculiar fruit -- each year farmers across the country leave between 20 and 40 percent of their crop to rot on the ground. These are the ugly ducklings of the lot; though perfectly fine on the inside, the misshapen or blemished melons simply won't sell at the grocery store.

"If a crow lands on a melon, takes two pecks at the rind, and then flies away, it's no good," Wayne Fish of the United States Department of Agriculture in Lane, Oklahoma said. "I had farmers telling me, 'I'm leaving one-fifth of my melons on the land. Is there anything I can do with them?'"

Across the United States, he estimated that 360,000 tons of watermelons spoil in fields every year.

Some local growers wondered whether the waste melons could be turned into ethanol, the clean-burning fuel derived from plant sugars. In a series of new experiments published yesterday in the journal Biotechnology for Biofuels, Fish and a team of researchers showed that they can.

What's more, watermelon juice may turn out to be the perfect way to optimize industrial-scale production of ethanol from corn, molasses and sugar cane.

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Watermelon juice is about 10 percent sugar by volume, about half the concentration that manufacturers consider right for producing ethanol. But it's chock full of amino acids that provide a crucial source of nitrogen for yeast to feed on during fermentation.

On its own, the team calculated they could make about 2.5 million gallons of ethanol each year from waste melons, a drop in the bucket of an industry that last year produced 9 billion gallons from corn and other feedstock in the United States alone.

But both corn and molasses require lots of water, and sometimes nitrogen supplements to prepare for fermentation. The team suggests that watermelon juice from reject melons could drastically cut down on water usage, supply needed nitrogen, and even add some sugar to the mix, cutting the amount of corn or molasses by up to 15 percent.

"This is not going to replace corn. In that sense it will remain a niche source of biofuel," said Jim Rausch, president of the College Station, Texas-based company Common Sense Agriculture, LLC, which is developing a prototype watermelon juice-to-ethanol processing plant.

"But unlike algae biodiesel or cellulosic ethanol, it's a right now thing. There's no new technology that needs to be developed to make it economical."

Brazil’s First Network of Electric Charging Stations Will Be Solar-Powered

Written by Bryan Nelson

The first of many roadside electric charging stations in Brazil is set to be installed in the Barra de Tijuca neighborhood in Rio de Janeiro, and it’ll be solar-powered.

The neighborhood was chosen because it has the highest number of electric motorcycles certainly in circulation. The battery charging point will serve a mainly symbolic purpose at first, “awakening environmental awareness by showing people that it is possible to use energy without harming the environment,” said spokesperson Edimar Machado.

Brazil has been a worldwide leader in reducing the impact of the transportation sector on the environment, with 90% of new cars sold in the country being flex-fuel– capable of running on ethanol or gasoline in any proportion. Now the hope is that they can also lead the world in infrastructure for electric vehicles. Once they become more financially viable, Machado hopes to have an electric charging station positioned every 30km across the country.

That could soon allow every electric motorcyclist the capability to travel the entire length of Brazil’s major roadways if they wanted, even if their battery length is only around 40km, like most of the bikes currently in circulation there. Machado also suggested that used batteries could be exchanged for already-charged ones at the stations for the same price as a full charge, in case roadsters can’t wait around for the standard 4 hours it takes to charge the batteries. That would make the time it takes to “fill up” your electric vehicle no longer than it would take to fill up a gas tank.

Even better, the charging stations will generate their electricity from solar energy. The charging point captures solar energy by means of an array of 28 photovoltaic panels that generate 184 volts of direct current, which is transformed into triphasic alternating current. Output is at 110 or 220 volts [1]. And on days when there isn’t much sunlight, or at night, the stations could still derive electricity from the grid system.

The Brazilian Electric Vehicle Association says the market for electric vehicles is already growing by about 50 percent a year, and with new charging stations located conveniently around town that number is expected to increase dramatically. They also project that electric vehicles will consume barely three to five percent of the country’s total energy in 2030, meaning as the system expands it shouldn’t be a significant strain on the country’s electricity. Meanwhile, car fuel consumption will be reduced by 10 percent.

Although that nationwide system of stations is still far from practical, the implementation of this first station is symbolic of what can be envisioned with the right political will and incentive.

Source: IPS News

Image Credit: Diego_3336 on Flickr under a Creative Commons License

100% Electric Airplane Sets New World Speed Record

Written by Jerry James Stone

On Wednesday, June 10, astronaut Maurizo Cheli set a world record while piloting the fully electric SkySpark. During an eight-minute flight at the World Air Games 2009 in Turin, Italy, he hit a top speed of 155 mph (250 km/h).

That’s a record speed for a 100-percent electrically powered aircraft.

The SkySpark, which sounds like something out of Transformers, is a specially built Pioneer Alpi 300 aircraft. It’s powered by a 75kW brushless electric motor and lithium polymer batteries. The project is coordinated by DigiSky, an Italian engineering company specializing in aeronautical applications, working in conjunction with Turin Polytechnic University.

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Equipped with a liquid-cooled Valentino synchronous motor by Sicme Motori, the plane has been in development since September of 2007. But according to the SkySpark website this is only an intermediate goal for the plane.

It’s expected that the craft is capable of 186 mph (300 km/h). And while these speeds are barely significant when compared to some conventional planes, the potential is noteworthy nonetheless.

The SkySpark team hopes to keep improving the plane’s performance. Using a “hydrogen fuel cells powered engine,” they plan to increase the planes range…and of course its speed.

Maurizo Cheli , of the European Space Agency, is an experimental test pilot and the former Italian astronaut who flew aboard the NASA space shuttle mission back in 1996 (STS-75).

Source: Autoblog Green, TreeHugger

Spain Leads the World in New Solar Energy Development

Written by Bryan Nelson

According to a newly released draft of a report by the Renewable Energy Policy Network for the 21st Century (REN21), Spain now leads the world in added photovoltaic capacity.

Although Germany is still the leading nation in total grid-connected solar photovoltaic capacity, this news now means Spain has surged into second place there. The report comes as an embarrassment for a floundering Japan, who used to lead the world, but now has fallen to third place in total capacity and forth place in added capacity.

Spain added 1.7 million kilowatts of capacity in 2008, followed by Germany at 1.5 million kilowatts. The United States lagged behind in a distant third place at 300,000 kilowatts, followed by Japan with only 240,000 kilowatts. The news is disappointing for Japan, but it should be equally as distressing for the United States, which continues to show only slow improvements year to year.

The big difference between the top two countries and the U.S. and Japan appears to be public policy. In Germany and Spain, power companies are required to make long term purchases of renewable energy at uniform prices. Although similar requirements exist in the U.S. and Japan, they are so small that they lead to policy failure, which in turn prompts legislators to be apprehensive when it comes to strengthening those policies.

Nevertheless, Spain has become a shining example of how more ambitious policies can lead to real improvements.

Image Credit: Schwarzerkater on Flickr under a Creative Commons License

Biofuel from Canal Algae to Power Venice by 2011

Written by Eva Pratesi

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It’s plentiful, it’s homegrown, and it could help clean up the environment while powering our cities. The idea of transforming algae into a fuel is a reality. Nowadays there are numerous implementations of algae into the renewable energy market.

“Sargassum muticum” and “Undaria pinnatifida” are the names of two kinds of algae brought by the ships coming from Japan and the Sargassi sea. The algea grows over the seaport of Venice, causing problems for gondolas and ferry boats. But today it could be turned into a resource.

Italy recently announced a 200 million euro eco-friendly project to harvest the prolific seaweed that lines Venice’s canals and transform it into emissions-free energy. The idea is to set up a power plant fuelled by algae, the first facility of its kind in Italy. The plant, to be built in collaboration with renewable energy services company Enalg, will be operative in two years and will produce 40 megawatts of electricity, equivalent to half of the energy required by the entire city centre of Venice.

The algae will be cultivated in laboratories and put in plastic cylinders where water, carbon dioxide, and sunshine can trigger photosynthesis. The resulting biomass will be treated further to produce a fuel to turn turbines. The carbon dioxide produced in the process will be fed back to the algae, resulting in zero emissions from the plant. “Venice could represent the beginning of a global revolution of energy and renewable resources. Our goals are to achieve the energetic self-sufficiency for the seaport and to reduce CO2 emissions, including those one produced by the docked ships”, says the president of the seaport of Venice Authority, Paolo Costa.

The idea sounds good and seems to open great possibilities for zero emission energy production; Venice could represent the first step of a real innovative evolution even if there are still some doubts about the huge amount of money required for this project and the authorization needed to built the plant.

For more information about biomass energy, see also Solena Group.

Image credit: Kevin via Flickr under a Creative Commons license.

New device allows you to charge your laptop with foot pedal.

This compact device called the YoGen Max from a company called Easy Energy allows you to charge up your laptop anywhere in the world with the power of your foot. If you are at an airport with no outlets in sight or on a plane and you don’t mind looking a bit silly and getting weird looks this could be perfect for you. More importantly this can keep your laptop going in rural parts of the world where you won’t look silly at all foot pumping your laptop.

Folded up it is small enough to fit into most laptop cases and easily go with you anywhere. The YoGen Max produces 60-80 watts of power when in operation and when your foot and leg cramp up it can also hold 12 rechargeable AA batteries to keep the power flowing. Easy Energy claims this is enough to keep a typical laptop going.

This isn’t for sale quite yet, but they say they have a working protype and are starting to take orders from distributors. I also don’t see any information about how much this retail for, but hopefully it will be reasonably affordable. This portable charger could help many people that need power on the go.

For more information head over to Easy Energy’s site.

Here’s a video demonstration of the YoGen Max.