The History of Virtual Power Plants

Jiggersha: VPPs have been around for the better part of 40 years, to my recall. In fact, I would date it back to the first energy service companies or ESCOs that did things like energy efficiency retrofits on commercial buildings. She says a lot of utilities say, well, can we backfeed a single kilowatt hour? "We don't really run the grid in two directions," Jiggersha says.