The power producer's deliveries to unregulated users grew almost 30% in the first half.
High energy rates have caused complaints from business owners to the Mexican senate, which is now seeking explanations from the energy regulator and state utility CFE.
A warning from a Latin America energy expert follows the introduction of new regulations aimed at attracting investments in non-conventional renewable energy (NCRE) and reducing the country's dependence on hydroelectricity.
The energy auction will now take place on December 18, 2018 according to the latest update.
The Transmission System Esmeraldas - Santo Domingo guarantees the supply of electricity for the northwest of the country