Data analysis and forecasting modelling is vitally important for many application. Among them an ongoing Norwegian initiative on developing technologies for offshore wind energy. Uni Research as NORCOWE partner focuses on the AI application for improving weather and energy yield forecast for both long and short time scales. During last three years several projects, both in the academic and the private sector, have been completed. The projects were based on Artificial Neural Network models of different kind: e.g. feed forward network, self-organizing map, etc. Two show cases will be presented in the proposed seminar.