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Wind Power

Nation's First Freshwater Offshore Wind Farm Planned for Lake Erie

It's an exciting time in wind energy these days.  The U.S. will be getting its first offshore wind farm thanks to Cape Wind's long-awaited approval, and now plans for the first freshwater offshore wind farm in the U.S. have been announced as well.  The Lake Erie Energy Development Corp has signed a deal with GE to purchase five offshore wind turbines destined for the Ohio waters of the lake.

The 4-MW turbines will be placed three to five miles offshore though their exact planned location isn't known.  This is expected to be the first order of uk propecia many from the development corp that has made a goal of having 1 GW of freshwater-based wind energy online by 2020.

That's not a very long time to install that much energy capacity and buy cialis now this first order only takes care of 20 MW.  That means we'll be hearing a lot more about this project soon.

via Earth & Industry

Another Hurdle Cleared for Cape Wind

Last week, the Cape Wind offshore wind farm was approved by the federal government, but there were still some unknowns left to deal with, a major one being who would buy the power the buy brand viagra wind farm generated.  Today, that part has at least partially been decided, with Massachusetts utility National Grid agreeing to the best site best price on levitra purchase half of the power starting in 2013.

Under the contract, National Grid will buy the electricity at 20.7 cents per kWh, which will lead to an increase of only about $1.59 per month on viagra medication online its customers energy bills.

The contract is a win-win for National Grid and Cape Wind.  The agreement is enough for the wind farm to start securing financing and investors and the electricity being purchased will equal three percent of the utility's total load -- a big step towards a state requirement to get 15 percent of their total electricity from renewable sources by 2020.

The project is ordering levitra overnight delivery set to be completed by the end of 2012, but there are still other hurdles to clear:  more purchase agreements are needed, many lawsuits have been filed to halt the project and lots of red tape lays ahead to purchase female viagra build the wind farm.

via Earth2Tech



Solar Aero's Bladeless Wind Turbine


A research company in New Hampshire recently announced the patent of their bladeless wind turbine, which is based on a patent issued to Nikola Tesla in 1913. The Fuller Wind Turbine developed by Solar Aero has only one rotating part, the turbine-driveshaft. The entire assembly is contained inside a housing, so that this turbine offers several advantages versus blade-style (primarily horizontal-axis type) turbines. With a screened inlet and outlet, this turbine does not present a danger to wildlife such as bats and birds. To an outside observer, the only movement visible is the entire turbine housing as it adjusts to track the wind. This also makes it a good candidate for use near military surveillance and radar installations, where moving blades would otherwise cause difficulties.

According to the company, the turbine is expected to deliver power at a cost comparable to coal-fired power plants. Total operating costs over the lifetime of the unit are expected to be about $0.12/kWh. The turbine also should have fewer maintenance requirements, leading to lower lifetime operating costs. The turbine itself can also be supported on magnetic bearings, and all of the generating equipment kept at ground level, which will also make maintenance easier. The company estimates "final costs will be about $1.50/watt rated output, or roughly 2/3 the cost of comparable bladed units."

The Tesla turbine operates using the viscous flow of a fluid to move the turbine and thereby produce energy. The Tesla turbine "consists of a set of viagra sale buy smooth disks, with nozzles applying a moving gas to the edge of the disk. The gases drag on the disk by means of viscosity and the adhesion of the surface layer of the gas. As the gas slows and adds energy to the disks, it spirals in to the center exhaust. Since the rotor has no projections, it is very sturdy." Disks in the turbine need to be closely spaced in order to capture the best online generic levitra viscous flow,. In order to be effective, the Tesla turbine also needs to have extremely thin disks to levitra next day delivery minimize turbulence at the edges. Tesla was not able to find metals of sufficient quality to make this work effectively, but apparently, nearly a century later, those limitations have been overcome.

Solar Aero's current example is an unassuming trailer-mounted unit, but a unit the size of the one pictured (see website) "should be capable of levitra online 50mgs 10kW output with no problem," according to the inventor. The number of disks determines the amount of power that can be produced. It will be interesting to see if this technology takes off, and if the technology is online cheap viagra something that can be scaled up to provide utility level power production, or if it is only a niche system. In any case, it is interesting to see alternatives to bladed wind turbines.

Link: Solar Aero

Cape Wind Project Approved!

Secretary of the Interior Ken Salazar has approved the Cape Wind offshore wind farm project!  In additon to low cost viagra uk giving the go-ahead, Salazar outlined a few tweaks to incorporate the cheap discount viagra concerns of those who have opposed the project.

  1. The project will be reduced in scope from the original 170 turbines planned to 130.
  2. Additonal marine surveys will be required before construction to make sure the archaeological heritage of the site can be preserved.
  3. Other measures will need be incorporated to minimize the "visual impact" of the wind farm.

It's hard to believe it's been nine years since the first announcement of the project in the Nantucket Sound.  Some residents of the surrounding area, including Wampanoag indian tribes and the late Sen. Kennedy, have opposed the project because they believe it would obstruct their views (and disrupt spriritual rituals and ancient burial sites of the indians).

But environmentalists around the country and five East Coast governors all rallied for its approval, and in the end, the U.S. is finally getting its first offshore wind farm.  The wind farm will have a capacity of 420 MW -- enough to meet 75 percent of Cape Cod and viagra rrp australia cost the Islands' electricity needs.

The U.S. leads the world in wind energy capacity, but we've lagged behind other countries, especially in Europe, that have forged ahead with offshore wind.

Why is this a big deal?  Because offshore wind is stronger, more consistent and near coastal population centers, meaning more power generation, less gaps in electricity and no need for huge transmission networks (like those needed to distribute wind energy generated in the middle of the country).

via  Boston Globe


Vortex-Creating Wind Turbines Could Double Wind Farm Output

An egg-beater-like vertical wind turbine design could potentially double the purchasing levitra output of wind farms by using the space between larger, horizontal turbines.

Wind farms take up a lot of land because the large rotating blades of the turbines need a lot of space in between them to operate safely and effectively, but company Wind Harvest International thinks wind energy could be generated in those empty spaces.  The company claims a MW array of their shorter, vertical turbines could fit in the space between two horizontal MW turbines.

The Wind Harvest turbines work in groups of three or more to maximize their energy output.  The turbines alternate between clockwise and counter-clockwise rotation, creating a vortex that accelerates the localized wind speed by almost double.  The company says it's also possible that the arrays could boost the energy output of the larger horizontal turbines as well, but that more testing would have to be done to confirm that.

Other than utilizing all of the land in a wind farm, the vertical turbines could also act as a back-up for the horizontal ones.  In extreme wind speeds where large turbines have to be shut off, the vertical turbines could keep generating electricity.  The company also plans to market a turbine for low wind speeds.

Wind Harvest plans to have 25 and 75-kW versions available commercially in 2011.

via Greentech Media
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