This international conference , which is a tribute to Juan-Enrique Martinez-Legaz on the occasion of his 60th birthday, has the aim of a top-level scientific meeting to promote a broad exchange of information and new developments in the areas of Functional and Variational Analysis, Control, Optimization and Applications in Economics. The event included a half-day workshop applications of Optimization in Engineering. I was invited to contribute to this last wokshop with the presentation of the work "A multistage stochastic programming model for the optimal multimarket electricity bid problem".