In the new economy, new corporate governance, social and environmental standards are set, as well as non-financial issues that come to complete the global performance of the company reflected in the financial indicators. The results of our work bring more value to the knowledge stage in this field through the following qualitative aspects of the scientific research activity: a) It presents the reevaluation of the organizational theories which lead to an approach concept of the management and control system of the organization which is the corporate governance concept; b) The elaboration of a methodology able to measure the quality of corporate governance system, adapted to the Romanian space; c) The evaluation of the corporate governance system for Romanian companies; d)Identifying the four global performance dimensions available in the new economy which are: financial dimensions, corporate governance dimension, social dimension and environmental dimension; e)The evaluation of the global performances of the Romanian companies over the period 2001-2011.