“…Many research papers have suggested that combining will perform better than individual methods (Clemen, 1989;Clements and Hendry, 1998;de Menezes et al, 2000;Riedel and Gabrys, 2005;Altavilla and De Grauwe, 2006;Timmermann, 2006;Chen and Yang, 2007;Clark and McCracken, 2009), including some applications to electricity demand forecasting (see Taylor and Majithia, 2000;Taylor, 2010). In the context of electricity prices, García-Martos et al (2007) similarly advocate combining, but within a single model class (ARIMA), to deal with specification uncertainty.…”