Manitoba Hydro International is a Canadian company with a research arm called the Manitoba HVDC Research Centre that develops the software packages PSCAD (also known as PSCAD/EMTDC).

PSCAD is an electromagnetic time domain transient simulation environment and study tool, created in 1988 and first released commercially in 1993. It is a multi-purpose dynamic simulator with particular specialisation in HVDC applications.

Reference: PSCAD