Duke Energy detailed on Tuesday a smart-grid program that pushes power generation and storage to edge of the transmission network.
The company is testing what it calls a "virtual power plant" at a substation in Charlotte, N.C., that it hopes will allow it to use electricity more efficiently.
The substation--where electricity is distributed to a local neighborhood--is equipped with a 50-kilowatt solar array, enough to supply at least five homes when operating. The 213 solar panels either feed electricity directly to the grid or to a 500-kilowatt zinc bromide battery.
About 100 households in the McAlpine Creek … Read more