Dr. Shigeru Yokoyama was born in Sendai, Japan, on March 5, 1947. He received the B.Sc. and Ph.D Degrees from the University of Tokyo, Japan, in 1969 and 1986, respectively. He joined Central Research Institute of Electric Power Industry(CRIEPI) , Japan in 1969. Since then he has been engaged in the research of lightning protection on power system, buildings and wind turbines. He holds posts of Executive Research Scientist at CRIEPI. He was Professor at Kyushu University since 2001 through 2007. He was a vice president of the IEE Japan in 2001. He is a fellow of IEEE and a chairman of IEC TC 81(Lightning Protection) Japanese committee.