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Terra-Gen Power closes funding for ‘largest ever’ wind farm

By | July 22, 2010, 2:34 PM PDT

New York City-based Terra-Gen Power on Thursday said that it is on track to build what it anticipates will be the largest wind energy farm in the United States.

The company measured that milestone through the closing of a $1.2 billion round of construction financing for four wind power projects at its Alta Wind Energy Center in Kern County, Calif.

Construction is expected to begin immediately, with commercial operations slated to begin in the first half of 2011.

Citibank has agreed to purchase the projects as a leveraged lease; Terra-Gen will manage and operate the projects under long-term agreements.

The projects will generate an estimated 570 megawatts of capacity, and will use turbines manufactured by Vestas.

Over time, the wind farm should generate up to 3,000 megawatts of wind power. The first phase, called Alta Project I, broke ground in March. Alta Project I utilizes 100 GE turbines, which generate 1.5 megawatts of power each.

The State of California estimates that it requires 55,657 gigawatt-hours of new renewable energy generation to meet its clean air and water standards, according to a report published by California’s Independent System Operator (ISO) in March.

California also projects that it will need six or more transmission lines and multiple technology architecture and system upgrades.

Terra-Gen Power is well on its way toward contributing to that goal. The company’s Web site lists eight existing wind power facilities in California: six projects in Tehachapi, one in Mojave, and one in Palm Springs, generating a combined 254 megawatts of clean energy.

The company also signed a 1,550-megawatt power purchase agreement with Southern California Edison in 2006.

Illustration: A rendering of an Alta Wind project site. (Terra-Gen)

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David Worthington

About David Worthington

David Worthington is a contributing editor for SmartPlanet.

David Worthington

David Worthington

Contributing Editor

David Worthington has written for BetaNews, eWeek, PC World, Technologizer and ZDNet. Formerly, he was a senior editor at SD Times. He holds a degree from Temple University. He is based in New York.

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David Worthington

David Worthington

David does not have financial holdings that would influence how or what he covers. Occasionally he consults for other companies; should David cover a topic in which a client is involved, he will disclose this fact in his writing. His views do not represent those of ScaleOut Software.

He writes for SmartPlanet and is not an employee of CBS.

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+1 Vote
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RE: Terra-Gen Power closes funding for 'largest ever' wind farm
150 megawatts each? Nope. The GE SLE turbines are actually rated at 1.5 megawatts each. The combined capacity of the Alta project is 150 megawatts (100 turbines).
Posted by whinnycritter
22nd Jul 2010
+1 Vote
+ -
@whinnycritter
Thanks for the correction! It's been fixed.
Posted by andrew.nusca
23rd Jul 2010
+1 Vote
+ -
RE: Terra-Gen Power closes funding for 'largest ever' wind farm
What does it mean to say that it generates X watts? Is that in an hour? a day?
Posted by Prague
23rd Jul 2010
+1 Vote
+ -
@Prague
A watt is a unit of power, i.e. a measure of energy per unit time. A watt-hour is a unit of energy corresponding to an ongoing production or consumption of one watt over a time period of one hour.

The confusing statement in the story is:

"The State of California estimates that it requires 55,657 gigawatt-hours of new renewable energy generation to meet its clean air and water standards, according to a report published by California?s Independent System Operator (ISO) in March."

Here we have an energy requirement with no reference to a time period. Is this energy needed each year, each day or over a ten-year period? Without a reference time period it is impossible to translate this requirement into a corresponding generating capacity. What percentage of the requirement could be met by the Alta Wind Energy Center?
Posted by cpuwzd
23rd Jul 2010
+1 Vote
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RE: Terra-Gen Power closes funding for 'largest ever' wind farm
Until everyone gets smart and ties these projects (wind and solar) to another energy source like geothermal to cover the base load, they are only a partial solution. We can put massive amounts of power into the grid while these (wind and solar) are running only to find ourselves scrounging to power a light bulb the other 50% of the time. Until Washington gets a "Smart" energy policy that looks at the whole picture, we are still behind the curve to eliminate the fossil fuels. Terra-Gen also operates several Geothermal Facilities so they are trying, but in general, there is a lack of foresight when these projects are approved.
Posted by Russ@...
23rd Jul 2010
+1 Vote
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RE: Terra-Gen Power closes funding for 'largest ever' wind farm
If my math is correct: giga equals a billion equals 1,000 million; so in the case
at hand, 3,000 megawatts are equal to 3 gigawatts. Then the big wind farm at
3,000 megawatts will be able to produce a little over one-half of one percent
of California 55,657 gigawatt requirement.

The dollar measure just using the $1.2 bil for 570 megawatts means a
minimum of a little over $2.0 bil for a single gigawatt. If 55,657 are needed, it
looks a tad expensive, to say nothing of the environmental impact of wind
farms, solar arrays, and other generation means.

Andy Klemm
andyklemm@att.net
Posted by Andy Klemm
27th Jul 2010
+1 Vote
+ -
RE: Terra-Gen Power closes funding for 'largest ever' wind farm
The article SHOULD read "The State of California estimates that it requires 55,657 gigawatt-hours / YEAR of new renewable energy generation"

The 570 MW of CAPACITY that they are planning to install is a measure of the INSTANTANEOUS generating capacity of the farm.

Since there are 8,760 hours a year, the maximum power generation of the farm would be 8760 hours/yr * 570 MW = 4993 gigawatt*hours/yr

But, this is assuming that the wind blows at full speed every hour of the day for the entire year. To know the actual power generated by this farm, you would need to know the wind velocity characteristics for the site, in addition to the part load performance of the turbines being installed. A better estimate would be about 1/10 to 1/3 of the maximum value, or 500-1500 GWh/yr

Anon Engineer
Posted by jksom
28th Jul 2010
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