Fortune: Long before Tesla made grid batteries cool, there was AES

Posted on June 19, 2015

By Katie Fehrenbacher

Tesla has brought an unprecedented level of attention to the somewhat dry topic of using batteries to manage energy for utilities. But if there was a prize for a company that has already delivered the most of these kinds of batteries to customers, that would likely go to AES Energy Storage, the battery integrator arm of power giant AES.

The Arlington, Virginia-based company has been working on installing grid battery farms since 2007, and now has about a third of a gigawatt worth of batteries in various stages of deployment. Some of those batteries are currently operating in big battery farms on the grid, some projects are under construction, and other projects are in the late stages of development.

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