This paper analyses the results of the reform to the Mexican energy sector from 1988 to 1994, the period during which former President Salinas de Gortari changed the energy policy strategy without modifying its objectives, Results were irregular since efforts were asymmetric, which generated new problems, Although the energy sector has opened up to private capital, the process has been far from spectacular, Even before NAFTA, the integration of this sector between Mexico and the USA was already under way; NAFTA accelerated this process and reduced Mexico＇s margin for manoeuvre in defining and formulating its own energy policy, Political and economic factors prevented Salinas from effecting a more aggressive liberalization; these factors, however, will be less significant during the Zedillo administration, which foreshadows the end of the statist modernism which has characterized this period.