The power generated by the generators on the Paraguayan side is done at a frequency of 50 hertz, the grid frequency of that country. The generators on the Brazilian side run with the grid frequency of Brazil, which is 60 hertz. Because Paraguay cannot consume all the energy produced by its generators, a part of it is sold to Brazil, converted to DC, transferred via the HVDC Itaipu to the São Paulo area, and then inverted to 60 Hz AC. The power generated by the Brazilian generators is transferred by 765 kV three phase AC lines to São Paulo.