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Wind Power

Could Climate Change Stop the Wind?


Climate change is mostly thought of as an overall warming of the planet along with localized changes and visit web site levitra uk more drastic weather events. Higher high temperatures, lower low temperatures, heavier rain and snowfalls, and longer periods of drought, as well as other sharp weather events. But there could also be longer term trends that change the fundamental behavior of weather patterns, and that could have a negative impact on wind power.

Large scale wind circulation patterns are driven by the temperature difference between the daily cialis cost poles and the temperate regions. If the poles continue to warm faster than the rest of overnight cialis delivery the planet, the temperature gradient will be smaller, and that could have drastic effects on wind patterns.

However, as with all of climate change, the reality of the matter is difficult to predict. Just as global warming became a difficult term because it didn't adequately describe all the local changes, different wind studies have found conflicting results. "A 2008 report from the U.S. Climate Change Science Program (USCCSP) noted that wind power could see either “significant positive or negative effects” as a result of climate change."

Wind turbines in some locations might be less affected by this, because some winds are driven more by local conditions than by overall climate. Coastal wind turbines, for example, may be driven more by the natural thermal difference between land and water (which is why it's almost always windy at the beach). Local geography and other factors can also influence this, too. Though there is no conclusive information to say which way things are going to go, this shows how complicated not only the issue of climate change itself can be, but how far the wow look it take cialis consequences can extend.

image: Dennis Murczak for CC:PublicDomain

via: North American Windpower


U.S. Gets First Offshore Wind Turbine Factory

While we don't have any offshore wind farms up and running yet, we're getting closer everyday -- a few projects have gotten approval for construction and even more are in the planning stages, but until now, the turbines for those projects would have to come from Europe.  Well, not anymore.  Wind energy company Gamesa has opened the country's first offshore wind turbine factory in Norfolk, VA.

The factory is ideally located on the Mid-Atlantic coast close to many sites that have been identified as prime for offshore wind power.  Gamesa isn't saying who their first customer will be, but the company did say that it's looking to install turbines off the coast of Virginia, which so far has no planned projects, as well as three other yet-to-be-disclosed East Coast sites.

The company is designing two 5-MW G11X turbine prototypes, with one being installed on land and one offshore for testing by the end of 2012.  The final product will be sold to wind farms both domestically and purchase cialis cheap internationally.

If the U.S. government has anything to real cialis without prescription do with it, Gamesa will have a lot of customers.  The DOE has announced a goal to take our installed offshore wind capacity from near zero to 10,000 MW by 2020 and then to 54,000 MW by 2030.

via Solve Climate



Renewables Supplied 75% of Spain's Electricity on January 6

On January 6, renewable energy made up a record-breaking 75 percent of Spain's electricity.  Over the course of the day, coal only accounted for four percent of the electricity supply.

On that day, conditions must have been ideal for renewable energy production, but even on any given day, Spain is cranking out some clean energy.  Spanish power transmission company Red Electrica reports that in 2010, renewable energy sources supplied 35 percent of all of Spain's electricity, which means the country surpassed its goal of having 30 percent of its energy come from renewable sources by 2010 and has almost hit its target of 35.5 percent by 2020 way ahead of schedule.

Last year, coal-fired power in Spain dropped 34 percent and gas-fired power dropped 17 percent leading to a 20 percent cut in emissions.

It's completely inspiring to see a country making such significant progress on upping renewable energy production and slashing fossil fuel use.

via Greenpeace


Small-Scale Wind Power Panels


A few years ago, the Wind Belt developed by Humdinger Wind Energy promised a compelling alternative to fan style wind power generation. More importantly, the Wind Belt was ideally suited for smaller scale power generation, which would be ideal for low-cost power generation for remote locations.

Now, other designers are coming up with other approaches that offer similar kinds of smaller scale power generation that do not require open fields, large swept areas, and powerful winds - things that large, spinning blade turbines need - to create electricity. One such project is the Vibro-Wind generator, which has been developed by a team of only best offers viagra uk students at Cornell University.

The test Vibro-Wind generator is made with an array of foam blocks which catch the wind and act as oscillators. It produces electricity with piezoelectric transducers, small devices that emit electrons when stressed by the vibrations from the blocks.

Small and cheap may be a useful alternative for producing wind power, particularly in environments without consistently strong winds that are suited for large turbine installations. Beacuse the Vibro-Wind generator works with buffeting and vibration, it could be more appropriate for urban installations where swirling winds are more usual than the ideal winds needed for typical bladed turbines.

via: Inhabitat


Wind Energy Now Cost Competitive with Coal

Wind power is now cost competitive with coal power in many parts of the world, according to we like it canadian pharmacy cialis generic a new report by Bloomberg New Energy Finance.

Over the past few years, as demand for wind turbines has grown, manufacturers have lowered their prices, meaning the cost of wind power has fallen and will likely continue to remain competitive with fossil fuel power.  The Bloomberg study says that last year the cost per megawatt for turbines hit $1.33 million, which is 17 percent less than in 2007.

In regions of Brazil, Mexico, Sweden and cheapest 50mg generic viagra the U.S., wind power now costs $68/MWh and coal power costs $67/MWh.  Natural gas remains cheapest at $56/MWh.

This is great news for the future of wind power generation.  If it costs the same as or less than fossil fuels, more people will realize that the choice is obvious.

via Grist

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