Normalised electricity generation

This concerns the normalised gross production of electricity, adjusted for weather effects and including indirect electricity generation from green gas.
Normalised production in a specific year is calculated as the capacity in this year multiplied by the average production per capacity unit over the previous five years (wind power) or fifteen years (hydropower).
Although total solar generation partly depends on the weather, the EU’s Renewable Energy Directive states that normalisation is not applied to solar power. However, since 2018 the statistical method for calculating total electricity production has been based on the assumption of a fixed output level per capacity unit, multiplied by a factor which links actual solar irradiation to the long-term average of solar irradiation. This factor was not applied prior to 2018.
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