Giulio Teodoro Maellaro was born in Brindisi (Italy) in 1955. He graduated in mechanical engineering from the University of Padua (Italy). he was an officer in the technical services corps of the Italian army in the motorization sector. He taught thermotechnics and heating systems in industrial technical institutes. At the "Carnaro" Nautical Institute in Brindisi he taught marine machinery, on-board technical systems and mechanical technology. Expert in sustainable energy and energy transformations. Freelance designer engineer in the construction, plant engineering and energy saving fields. Convinced advocate of the need to immediately implement the energy transition. He created the SEWAT (Sustainable Energy by Waves Trap) device to obtain sustainable energy from sea waves.