Power utilities are transforming their grid infrastructures to keep pace with escalating energy demands from new artificial intelligence data centers and the growing electrification movement. To succeed with this transformation, they need to modernize their mission-critical grid communications networks by replacing TDM technologies with packet-based networking. For most utilities, this means choosing between two converged technologies: MPLS-TP and IP/MPLS. But which one is the right choice for grids in transition?