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The Deal: Loan Guarantees for Beacon Power and Nordic Windpower

By Sharryn Harvey, Power Engineering magazine
November 2, 2009   |   4 Comments
Two companies recently received conditional loan guarantees through funds from the Energy Policy Act of 2005.

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"They asked what would happen if we had to decommission, things that seem 20 years into the future."

-- Gene Hunt, Spokesperson, Beacon Power
4 Reader Comments
Comment
1 of 4
November 3, 2009
Hello from NE Wisconsin:

I wonder why the State of New York is interested is interested in energy storage? Perhaps, the transmission capacity is not present; if this is the case, then the excess energy could be stored for later use.

I am not keeping track of all the states that have a renewable portfolio standard. If New York is one of them, then, transmission capacity will have to be added (eventually to cope with all the wind generated power from wind farms from throughout the state.)

Seriously, why have fly-wheel based energy storage? I can see it if New York was a large island like Hawaii.

Douglas Johnson
Comment
2 of 4
November 3, 2009
Douglas, these flywheels are not used for long term storage such as hours or days, but very transient storage like 1-15 minutes. They prop up the voltage (technically the frequency) of the grid when big demand spikes hit. If the spike is short, then the flywheels are all that is needed. If it is a longer spike, then additional generation will come on line, like gas turbines. Currently, this is done using "spinning reserves" which are gas or coal generators that are running at below peak output and can ramp up and down to handle these spikes. The trouble with these are that it is very inefficient (ie expensive) to keep a whole plant generator running just to supply a few possible spikes. These flywheels help smooth out the demand spikes on the grid, and give operators more time to bring another generator up from a cold start. The term for this is "frequency regulation", and is gradually becoming a separate billable service provided on the grid.
Comment
3 of 4
November 4, 2009
The simplest way to think of Beacon is that it's flywheel plants are shock absorbers for the grid -- absorbing or injecting energy instantaneously as needed moment to moment to keep the power stable.No more flicker or the worse damage that adds up to billions each year. Generators or "spinning reserves" today don't come close doing the job well. The transient has usually done its harm before they can ramp up, and they can't absorb energy anyway.
Comment
4 of 4
November 6, 2009
Hello from NE Wisconsin:

After I submitted my thoughts on this article about why there was a need for a flywheel for energy storage, I learned from others what flywheel storage was all about. The answer bothered me because no where else in the country has there been talk about energy storage for their wind farms. I learned the other day that when a cloud passes by a solar farm, that there are energy spikes too; but, you don't read about energy storage to level off the spikes in that scenerio either. The only place that is using flywheel storage (unless I am wrong) is in New York.

Well, there is more to the story: I read in "Clean Energy Magazine" the May/June edition, from the article, Earth, Wind and Fire, that there was a plan to establish a 190 mile transmission line from up-state New York to the New York City suburbs that was curtailed because of opposition. So, somebody lost $20 million dollars and large wind development was put on a back burner.

In this article, a wind farm of 20 MW is far from being large. I would still think that the electrons from this generating plant will more likely be used locally.

Doug Johnson
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