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TAR NC Implementation Document – Second Edition September 2017
(e) Calculate the average over the year for the product of multiplier and seasonal
factor. This is to check if it is equal to or higher than 1 and equal to or lower
than 1.5, which is the allowed range set out in the TAR NC for the multiplier
and seasonal factor combined
(f) If the value of the average falls within the range from 1 to 1.5, there is no
correction step needed. If the average is lower than 1 or higher than 1.5, the
following correction step is needed:
For daily and within-day standard capacity products
Seasonal factors for daily and within-day products are calculated on the basis of the
initial total forecasted flows for a given month, using the same steps (a) to (d) above.
Then, applying the steps (e) and (f) above taking into account the corresponding
multipliers for the daily and within-day products.
If the value of the average falls within the range from 1 to 3, there is no correction
step needed. If the average is lower than 1 or higher than 3, the following correction
step is needed:
For daily and within-day products, the correction step in point (f) must be applied
‘mutatis mutandis’, meaning that:
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By default, the cap of 1.5 will be changed to the cap of 3;
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In duly justified cases, the cap of 1.5 will be changed to the respective applied
multiplier cap (more than 3) and the floor of 1 will be changed to the respec-
tive applied multiplier floor (more than 0 and less than 1).