“…In particular, short-term forecasts are required for the purposes of power plant operation, grid balancing, real-time unit dispatching, automatic generation control, and energy trading. On the contrary, longer-term forecasts are of interest to Distribution System Operators (DSO) and Transmission System Operators (TSO) for unit com-Email addresses: pepe@diism.unisi.it (Daniele Pepe), giannibi@diism.unisi.it (Gianni Bianchini), vicino@diism.unisi.it (Antonio Vicino) mitment, scheduling and for improving balance area control (see, e.g., [1,2,3,4] and references therein).…”