Community storage

Local storage is being tried out in a number of DOE-funded community storage projects. Like storage at a substation, these local units are available to supply electricity in the case of an outage, maintain voltage, and level the load at the substation. The idea is to link many of these small, relatively inexpensive units so that they can provide megawatts' worth of energy for a few hours. Here are AEP's "backyard storage" units being tested in Ohio.