The economic expenditure of a hydraulic project can preclude its potential success in a tender competition. Precise and optimized cost calculations are crucial, and this can be viewed from two main prospective. In the first place, it hinges on the accuracy of initial projections compared to the actual implementation of the project. The evaluation is based on the maturity class defined by the AACE 18R-97 standard and the identification of the most economically impactful drivers. In the second place, the system must not only work hydraulically, but once optimized according to specific algorithm, it also must provide significant safety margins for over and under pressure during exceptional abrupt interruption.