For GSS Energy Use chapter 5. Excerpt: As scorching weather envelops the Northeast and the Midwest, electric utilities are scrambling to keep the power on while air-conditioners strain utilities’ capacity. ...several utilities...have signed up to fine-tune and test what they hope could lead to an answer — a battery half the size of a refrigerator from Eos Energy Storage, the company said Tuesday. If the testing goes well, the batteries hold the promise of providing storage that until now has been unaffordable on a large scale. ...Part of the appeal is economic: utilities could buy power from centralized plants during off-peak hours, when it is cheaper, and use it to feed the grid at peak hours when it is typically more expensive. ... Eos...battery relies on zinc, a relatively plentiful and cheap element. The company projects that its cost will be $160 a kilowatt-hour, and that it would provide electricity cheaper than a new gas power plant built to help fulfill periods of high demand, Eos executives said. Other battery technologies can range from $400 to about $1,000 a kilowatt-hour. “They’ve got a cost factor that makes it economically viable to use their batteries,” said Troy DeVries, director of research and development at Con Edison. He added that the batteries did not contain toxic chemicals, making them more appealing for use in a congested city like New York.... http://www.nytimes.com/2013/07/17/business/energy-environment/battery-seen-as-way-to-cut-heat-related-power-losses.html. Diane Cardwell, New York Times.
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