In the aftermath of a massacre that left six people dead in the small farming town of Goshen early Monday, details remain sparse. The victims include a teen mother and her infant son.Reporter: Joshua Yeager, KVPR California could soon have a new repository of electric power, capable of stabilizing the state’s power grid. A German company is building a virtual power plant brimming with potential. Reporter: Erik Anderson, KPBS Learn more about your ad choices. Visit megaphone.fm/adchoices