The International Federation for Information Processing Technical Committee 7 - System Modeling and Optimization - arranges in a cycle of two years highly regarded conferences to several topics of Applied Optimization such as Optimal Control of Ordinary and Partial Differential Equations, Modeling and Simulation, Nonlinear, Discrete, and Stochastic Optimization and Industrial Applications. This year the conference was celebrated in the Berlin Institute of Technology, and I participated with a contributed talk entitled "Solving electric market quadratic problems by Branch and Fix Coordination methods "