
Wind power is reaching the point of being cost-competitive with natural gas for electrical power generation. And with more demand uncertainty for natural gas, and increasing availability and reliability of wind power, utilities are turning more to the use of wind. "Wind’s costs have dropped over the past two years, with power purchase agreements being signed in the range of 5 to 6 cents per kilowatt-hour recently."
Gas is pretty clean for a fossil fuel. But when it is burned, it is still a carbon that was otherwise locked up for long-term storage that has now been transformed into additional CO2 that has been dumped into the atmosphere. Unfortunately, gas is a more expensive option than coal, so shifting from gas to wind doesn't do as much good as it would if it was helping to displace more coal burning power.
It will be beneficial if wind power and other renewables can push the dirtier, more polluting, and environmentally harmful fuels further off the table, but long-range government policy (or the lack thereof) continues to make that difficult. The AWEA has their view: "Now that we’re competing with natural gas on cost, we need consistent federal policies to ensure we have a diverse portfolio of energy sources in this country, and don’t become over-reliant on one source or another."
via: AWEA press release
image: CC BY-SA 2.0 by Mason Bryant/Wikimedia Commons

written by Temujin Kuechle, January 25, 2011
They are very efficient too.
However, for most people they would be considered expensive.
written by irish reed, January 25, 2011
written by Mick, January 26, 2011
There are many instances of planning approvals for wind power plants being rolled into communities where it clearly is questionable. By all means establish wind power plants but it is important to place them out of harm's way to humans. The precautionary principle must be applied in locating these plants.
May 31, 2007...Documented in a press release dated May 31, 2007 from the Vibro-Acoustic Disease (VAD) research group in Portugal, people living in the shadow of industrial wind turbines have moved a step closer to understanding the nature of the Wind Turbine Syndrome many of them experience and complain about.
Professor Mariana Alves-Pereira, Dept. of Environmental Sciences & Engineering, New University of Lisbon, Caparica, Portugal, has for many years been part of a team of physicians and scientists studying the pathophysiology of low-frequency noise and infrasound on humans. She is Assistant Coordinator of the Vibroacoustic Disease Project. Alves-Pereira and colleagues have been doing epidemiologic studies of airline pilots and technicians and other people who are chronically exposed to low-frequency noise and infrasound. The effects are grim: cardiovascular, respiratory, neurologic, and renal pathology and symptoms, which they call vibroacoustic disease (VAD).
*VAD is well established in the clinical literature. It has been amply documented and is readily detected by a variety of diagnostic tests.
Alves-Pereira (an acoustical engineer) and Dr. Nuno Castelo Branco (a surgical pathologist) recently took numerous noise/vibration measurements within a Portuguese home surrounded by four (4) industrial wind turbines. The closest turbine is nearly 1000 feet (300 meters), from the affected home. The turbines have been operating since November 2006. The report concludes:
"These results irrefutably demonstrate that windmills in the proximity of residential areas produce acoustical environments that can lead to the development of VAD in the nearby home-dwellers. In order to protect Public Health, ILFN-producing devices must not be placed in locations that will contaminate residential areas with this agent of disease."
written by RWFlynn, January 26, 2011
Just in case you're interested, I don't think wind energy is the best solution. It is merely part of the solution to decreasing our greenhouse gas emissions. geothermal energy, solar energy and an energy efficient way of life are also necessary to solve our global problem.
written by jcsr, January 26, 2011
written by 1carlos2, January 26, 2011
Ever wonder why it's the gas guys like T. Boone that's into building wind turbines?
written by kootzie, February 04, 2011
and much nastier than I thought...
http://www.aweo.org/problemwithwind.html#consumption
http://www.telegraph.co.uk/news/uknews/1452529/Wind-farms-make-people-sick-who-live-up-to-a-mile-away.html
yikes!
I'm feeling very discouraged at this - yet another case of corporate greed and deceit,
and government incompetence and complicity.
written by William Komp, February 19, 2011
written by Randy Steer, February 23, 2011
@irish reed and ppnl -- Natural gas also receives production tax subsidies, through depletion allowances. I don't know how the depletion allowances compare to the current tax credit for wind production, but the fact is that at the moment, virtually all fossil fuels AND renewable energy sources receive some sort of tax subsidy for their production.
@asaf -- At the moment, solar energy is not nearly as competitive as wind, although it's slowly getting cheaper. But it has other advantages such as the ability to install it on roof-tops, thus effectively using no "land area" at all. And of course it doesn't have the acoustic issues of wind. That's why, as RWFlynn said, we'll need multiple types of renewables, each of which has advantages for certain markets.
written by irene, February 25, 2011
written by renewable sources, March 06, 2011
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But is that a value for a subsidized cost of wind?