A Pacific Northwest National Laboratory (PNNL) research team recently developed a new model of an important device that acts as a kind of translator, allowing renewable power sources like wind and solar to better add their power to the electrical grid. The device, called a grid-forming inverter, plays a critical role in converting direct current (DC) electricity produced at, for example, a solar power farm, to alternating current (AC) electricity, the standard that comes from power outlets, while maintaining the stability of power grids.