A Hall-effect thruster is a plasma device wrapped in a much harder power-electronics problem. The power processing unit is the dominant cost, mass and schedule risk of an EP system — and almost every thruster team on Earth builds one in-house, or waits on export-controlled Western units.
vidyut is the merchant answer: a dedicated PPCU house in India, built on non-US-origin design authority.
Methodology: publicly identifiable vendors selling standalone Hall-thruster PPUs to third parties — company disclosures, satsearch listings, IEPC papers and trade press, surveyed August 2026. Source table available in diligence.
The soft-switched ZVZCS discharge stage — the ~95%-power heart of a PPCU — is operational as a bench breadboard (silicon). The lightweight GaN-based engineering-model PPCU is in design.
Vacuum load test, thermal-vac soak, EMI pre-scan, arc-survival and ignition-transient campaigns — then a thruster-coupled vacuum test with a partner thruster.
~55% engineering team · ~25% lab & test campaigns · ~12% qualification & compliance · ~8% go-to-market. Details for investors here.
A modular, lightweight GaN-based platform under development, built around one discharge stage to qualify across classes. Target envelopes →