The EMP Generator is a device generating electromagnetic pulses. S.H.I.E.L.D. developed an earlier non-functional model during the 1950s, while Victoria Snow developed a fully functional for Stark Industries.
Prototype version of the EMP Generator was developed by S.H.I.E.L.D. in 1950s and stored at Area 51. Pascal Vega noted that the prototype is non-functional but intended to make it being able to disrupt any electronic device within 30 feet. When Chronicom Hunters infiltrated the base to launch the Helion and destroy S.H.I.E.L.D., Jemma Simmons managed to activate the generator and used to it to disable the reactor.
Preparing for their hunt on the Inhumans, Anton Ivanov used his old military contacts and acquired the EMP Generator for the Watchdogs. The Watchdogs used the generator and caused multiple blackouts across the globe, pretending to be Inhumans, so people would start lynching them. However, S.H.I.E.L.D. agents managed to track down the Watchdogs' location and after the confrontation, Leo Fitz deactivated the generator.
Former Stark Industries employee, Victoria Snow, created a version of the EMP Generator prior to the Skirmish in Ixtenco. She used it to create electromagnetic pulses in order to stage the arrival of each of the Elementals during the Elemental attacks.