Censored spatial wind power prediction with random effects

We investigate the importance of taking the spatial interaction of turbines inside a wind park into account. This article provides two tests that check for wake effects and thus, take spatial interdependence into account. Those effects are suspected to have a negative influence on wind power production. Thereafter, we introduce a new modeling approach that is based on the Generalized Wind Power Prediction Tool (GWPPT) and therefore respects both-sided censoring of the data. Furthermore, the new model takes a Spatial Lag Model (SLM) specification into account and allows for random effects in the panel data. Finally, we provide a short empirical study that compares the forecasting accuracy of our model to the established models WPPT, GWPPT, and the nai͏̈ve persistence predictor. We show that our new model provides significantly better forecasts than the established models.