A huge new solar-and-battery facility has started feeding electricity into Utah's grid. The Green River Energy Center comes online with almost 1 million panels and hundreds of Tesla Megapacks spread across the site. What happened? According to Electrek, the Green River Energy Center, a $1.1 billion project in Emery County, can produce 400 megawatts of solar power and store another 400 megawatts across 1,600 megawatt-hours of batteries. rPlus Ene…