Like the Plan model above, external is a model that picks values from a load/production series and uses them as a forecast. The difference from Plan is that the model singles out a forecast series from which the values are to be taken.

In this way, you can create forecast series whose function is to handle import and storage of external forecasts. These are saved in aio-files as time series so that when new forecasts are imported old forecast values can be overwritten. In this way the time series for any given time point will always contain the last received forecast produced for the time point in question. At the same time, older forecasts can be saved in the follow-up files, so that, by using the follow-up tab, the forecast quality can be evaluated for any forecast horizon selected, e.g. 1, 2 or 3 days ahead in time. Using this model together with the functionality of alternative models allows a number of external forecasts to be evaluated and compared.