Showing posts with label wind. Show all posts
Showing posts with label wind. Show all posts

Wednesday, August 20, 2008

The US -- a World Leader in Wind Power Generation... Kinda

According to the American Wind Energy Association (AWEA), the capacity the US has for generating wind power is expected to increase 45% in 2008. America’s currently installed capacity stands at 19,549MW, up a total of 2,726MW from the end of 2007. Thanks to this number, AWEA is announcing that America is now the US world leader in wind electricity generation.

However this is an announcement based on stats that AWEA is hoping the rest of the world won’t look at too hard.

According to AWEA’s second quarter 2008 market report, they bill the US as the new world leader in the generation of wind power electricity. Looking at Germany’s capacity, for example, sees them with a total of 23,000MW, but never using that full capacity. Apparently the winds in America are stronger, and thus max out the US capacity.

But one important little factoid has been left out of this announcement, allowing the AWEA to make a perfectly legitimate statement, but based in marketing reality.

The US may have a capacity of 19,549MW, expected to grow another 4774MW by the end of this year, but it also has a population of 304.8 million people living on a total area of 9.8 million square kilometers of land. Germany, on the other hand, has only a population of 82 million and a total area of 357,000 square kilometers.


Via CleanTecnica

Tuesday, June 10, 2008

Rotating Wind Power Tower to begin construction in Dubai


This self-sufficient, sun and wind powered design is making headlines once again as the Italian-Israeli architect has just unveiled the latest design for his twirling tower, and construction is set to begin this month!

The Dynamic Architecture building has been aptly named Rotating Tower as the floors would be capable of rotating around a central axis. It will be continually in motion, changing shape and giving residents the ability to choose a new view at the touch of a button. The form of the building would constantly change as each floor rotates separately giving a new view of the building as it turns. According to Fisher, the building ensures a very high resistance to earthquakes as each floor rotates independently.

The new tower is the first building of its size to produced in a factory. Each floor, made up of 12 individual units, complete with plumbing, electric connections, air conditioning, etc., will be fabricated in a factory. These modular units will be fitted on the concrete core or spine of the building at the central tower.

The 59-floor building will be powered entirely by sun and wind energy. And, the architect claims that the building will generate 10 times more energy than required to power it, thus making it a positive energy building. Solar panels will be fitted on the roof to harness sunlight, and a total of 48 wind turbines will be sandwiched between the rotating floors, placed so that they are practically invisible. Each wind turbine could produce up to 0.3 megawatt of electricity, and it is estimated that 1,200,000 kilowatt-hours of energy would be generated every year.


From inhabitat.

Tuesday, May 20, 2008

Homemade power banishes the bills



Charmaine Watts hasn't had a power bill for eight years.

Her family of two adults and three children are one of hundreds around the country generating their own electricity.

With power prices on the rise, the $20,000 the Watts spent installing solar panels, a small wind turbine, storage batteries and wiring is starting to look like a good investment.

"I don't need to worry about power cuts," said Ms Watts. "It's just like a normal house. I flick the switch on my computer or my DVD player and away I go."

Watts is the head of the Sustainable Electricity Association of New Zealand, a group representing small-scale wind, hydro and solar power generators. Nobody knows exactly how many families generate their own power, but together it's thought they make between 5 and 6 megawatts of power a year - a drop in the bucket when measured against Meridian's planned West Wind wind farm near Wellington and its 142 megawatt production.

"Anyone with a roof has the potential to make their own electricity."

Mr Prior said solar generation would be affordable for most people only if the Government followed Germany and Australia and subsidised renewable power. "The market exploded in Germany. Manufacturers couldn't make enough panels," said Mr Prior. "The trouble here is the Government gets a return from state-owned renewable generators like Meridian Energy, so there's not much incentive to provide subsidies."

"We've saved something like 10,000 tonnes in carbon dioxide since 2000 by using natural, renewable energy."

More from the NZ Herald.

Monday, May 19, 2008

U.S. Can Boost Clean Wind Power for 2 Cents a Day per Household


May 17, 2008 | A stunning new report just issued by the Bush administration finds that for under 2 cents a day per household, Americans could get 300 gigawatts of wind by 2030. That would:

  • Reduce carbon dioxide emissions from electricity generation by 25 percent in 2030.
  • Reduce natural gas use by 11 percent.
  • Reduce cumulative water consumption associated with electricity generation by 4 trillion gallons by 2030.
  • Support roughly 500,000 jobs in the U.S.

The report doesn't mention that this would require adopting policies the Bush administration opposes. But that's what elections are for.

Wind power is coming of age. In 2007, some 20,000 megawatts of wind were installed globally, enough to power 6 million homes. Sadly, most wind power manufacturers are no longer American, thanks to decades of funding cuts by conservatives. Still, new wind is poised to be a bigger contributor to U.S. (and global) electricity generation than new nuclear power in the coming decades. As I have written earlier, concentrated solar power could be an even bigger power source, and it can even share power lines with wind.

That means we can realistically envision an electric grid built around renewables: electricity with no greenhouse gas emissions, no fuel cost (and no future price volatility) and no radioactive waste. But while it is poised to happen, and other governments are working hard to claim market share, America will need a bold president to ensure leadership in these major job-creating industries of the 21st century.

Read more from Salon.

$2 Billion Wind Turbine Order from Texas Oilman



Texas oilman T. Boone Pickens has placed an the largest ever order for wind turbines: he ordered 667 wind turbines from GE, each costing $3 million dollars, making the total order $2 billion. Pickens plans to develop the world’s largest wind farm in the panhandle of Texas.

The $2 billion order is just one quarter of the total amount he plans to purchase. Once built, the wind farm would have the capacity to supply power to over 1,200,000 homes in North Texas. Each turbine will produce 1.5 megawatts of electricity. The first phase of the project will produce 1,000 megawatts, enough energy to power 300,000 homes. GE will begin delivering the turbines in 2010, and current plans call for the project to start producing power in 2011.Ultimately, Picken’s company, Mesa Power, plans to have enough turbines to produce 4,000 megawatts of energy, the overall project is expected to cost $10 billion and be completed in 2014.

Via MetaEfficient.

Quietly, wind farms spread footprint in U.S


While growth in ethanol use as an alternative fuel has had a big impact on rural America, wind power has also been growing steadily for the past three years, with wind farms like this one springing up all over the windy expanse of the Great Plains and beyond.

While only 1 percent of U.S. electricity comes from wind, it is attracting so much support these days that many in the industry believe it is poised for a growth spurt.

"These are pretty heady times," said Randall Swisher, executive director of the American Wind Energy Association, which held an investment conference April 30 in Iowa that drew more than 600 attendees.

"People are finally starting to see the data about what is happening to the world's climate and that is really having an impact," said Swisher.

Read more from Reuters.

Friday, May 16, 2008

Whales Inspire New Efficient Blade Technology



He discovered that these bumps, called tubercles, are this creature's secret weapon, allowing a whale the size of a school bus to make tight turns and capture prey with astonishing agility.

To understand this phenomenon, imagine airplane wings. Pilots increase the angle of the airfoil to provide more lift. But when the angle gets too steep, the air current drags on the wing, suddenly reducing the lift and causing the aircraft to stall.

Fish found that humpback fins act a little differently. He and his colleagues tested a scale model of the whale flipper in a wind tunnel. To their surprise, the experiments revealed that significant drag occurs at a much steeper angle on the humpback fin than it does on a sleek flipper. Each tubercle redirects and channels air over the flipper, creating a sort of whirling vortex that actually improves lift, Fish says.

"These bumps were thought of as anatomical anomalies, but they do modify the flow and they do it in ways that are beneficial to the whale," says Fish.

The technology can be used in a huge range of machines such as turbines, compressors, pumps, and fans that use blades or rotors – most anything that cuts through air, water, steam or oil, says Fish.

"There was a 20 percent drop in energy use, a significant drop in noise decibels, and overall distribution of air was more even," says Envira-North CEO Monica Bowden. The increased efficiency also means the new fans will have five blades instead of 10, making them cheaper to manufacture.

More from MetaSurfing.