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

Friday, October 25, 2013

Great Lakes ice shouldn't stop wind turbines but will increase costs, engineering professor says

MLive

ice lighthouse.JPG
Ice on Lake Michigan is a major concern for those exploring wind turbines on the Great Lakes as this winter scene from Muskegon shows. (Chronicle file photo)
By Dave Alexander | dalexan1@mlive.com
 
on October 22, 2013 at 6:45 AM, updated October 22, 2013 at 7:27 AM

MUSKEGON, MI – Ice on Lake Michigan is apparently not a “show stopper” for those exploring wind turbine farms on the Great Lakes.
That is the initial conclusion of University of Michigan marine engineer Dale G. Karr based upon his work for the U.S. Department of Energy studying Great Lakes ice and its impact on wind turbine towers.
“I have not found ice to be a show stopper but our research will be useful in determining that question,” Karr told a lecture audience Monday, Oct. 21 at the Grand Valley State University Michigan Alternative and Renewable Energy Center in Muskegon.
That is not to say that lake ice isn’t an issue, far from it.
ProfessorKarrMAREC.JPGUniversity of Michigan Professor Dale G. Karr makes a point Monday, Oct. 21 at a lecture on Great Lakes ice and wind turbines at the Grand Valley State University Michigan Alternative and Renewable Energy Center in Muskegon.
“The Department of Energy is supporting this research to see if there is a show stopper,” Karr said. “Ice is a major issue if not the major issue for wind energy on the Great Lakes. The answer will start to emerge next spring when we will determine the designs and costs.”
Already offshore wind production is three times the cost of onshore wind farms such as the Consumers Energy Lake Winds Energy Park now producing electricity in Mason County south of Ludington, according to MAREC Director Arn Boezaart. Factoring in the cost of engineering wind tower protection against the ice is just one more reason that Great Lakes wind farms are likely more than a decade away, if the political will for such installations ever materializes, he said.
Karr said that the United States has taken an economic and technological back seat to Europe – especially Germany – and now both China and Japan in exploring, developing and deploying offshore wind. With the controversy of offshore wind in the United States for more than a decade, no offshore wind turbine has been installed although seven test projects are underway with federal funding.
“Europe is ahead of us probably a decade or so,” Karr said of offshore wind. “The German government is making offshore wind development the equivalent of our 1960s moon program. We are not the world leaders (in offshore wind) but now playing catch up.”
As the University of Michigan’s world-renowned department of marine engineering and naval architecture decided several years ago to delve into offshore wind technology questions, Karr began to study the effects of ice – an expertise he has obtained through studying oil and natural gas rigs in Arctic waters.
“We always get the question, why put wind turbines in the Great Lakes when there is ice?” Karr said of his research.

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Poland could halve demand for coal by 2030, study says

 



A group of miners pose for a photograph inside of an excavation corridor at Zofiowka coal mine in Jastrzebie Zdroj, southern Poland April 3, 2013. REUTERS/Peter Andrews


OSLO | Fri Oct 25, 2013 6:09am EDT
 
(Reuters) - Poland could halve its demand for coal by 2030 with a shift to renewable energies that would end its image as a laggard in European Union efforts to slow climate change, a study showed on Friday.
The report, by researchers in Germany and Poland, renewable energy groups and environmental group Greenpeace, included a foreword by ex-Polish Environment Minister Maciej Nowicki who called it a "feasible, realistic scenario".
It estimated that Poland, which now generates 90 percent of its electricity from coal, could create 100,000 jobs with a shift to wind, hydro, biomass, geothermal and solar power by 2030.
The scenario would require investment of $264 billion, double the $132 billion cost of business as usual. Still, free renewable energies would be cheaper in the long run by eliminating costs of fuel to generate electricity, it said.
Poland "has a once-in-a-generation opportunity to move beyond coal," it said. "Poland is home to a geriatric energy system, based on coal. Its power plants are old with about 70 percent of them being over 30 years old."

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