João Nelson Hoffmann received BSEE degree from the Federal University of Paraná (UFPR), Brazil, in 1981. He received a master’s degree in 1993 from the University of Campinas (Unicamp) in Brazil. Hoffmann worked for Copel Geracao e Transmissao S.A. for 30 years in the department of transmission line design. Currently, he is an independent consultant.