We first present the results of the regression model in Table 8 below. The average percentage error of the forecast for 2010 is 3.01% for Brabant and 3.05% for the Noord grids. Hence, we conclude that the regression model is quite effective in forecasting
the electricity infeed in both of the grids. On the other hand, the model occasionally generates large absolute errors, more than 10% and the maximum absolute error is around 30% for both grids.