The NASPI (North American SynchroPhasor Initiative) working group brings together power engineers and other people from electric utilities, from power equipment vendors, and from academia. NASPI's objective is to improve the reliability, throughput, efficiency, and economics of the electric power grid by accelerating the widespread deployment of devices called PMUs (Phasor Measurement Units). A PMU makes fine-grained time-synchronized measurements of the electrical state of a particular point on the grid.

NASPI (North American SynchroPhasor Initiative) has been funding a large-scale deployment and application of Phasor Measurement Units (PMUs) in the electric power grid. This relatively small advance in technology is expected to lead to major improvements in the reliability and efficiency of the grid. The NASPI Work Group, an informal organization of the people concerned with NASPI, has been meeting two or three times a year since 2006. This organization has been developing standards and interoperability guidelines needed to meet the NASPI goals.