Status and progress of IEC SC 77C high-power electromagnetics publications in 2015

IEC SC 77C (EMC: High Power Transient Phenomena) has been developing high-power electromagnetic (HPEM) standards and publications to protect civil society since 1992 having begun work as a working group in 1989. The initial publications dealt with the high-altitude electromagnetic pulse (HEMP), and in 1999 work began on intentional electromagnetic interference (IEMI). This paper briefly reviews the publications prepared in the past and identifies the most recent activities in IEC SC 77C.