2021

ERAA 2021
Modelling data

Inputs

Demand

The visual shows yearly demand values as well as hourly demand values by market zone and Target Year. More precisely, the figure shows the minimum to median and median to maximum yearly demand ranges across all 35 Climate Years (bars) and the minimum, median and maximum/peak hourly demands across the 35 climate years (dots).

PECD energy variables

The visual shows the minimum, median and maximum yearly available RES energy that can be generated by these technologies and injected in the grid under all climate years, provided there is sufficient demand, as well as the derived load factors (assuming 100% of the available energy is injected in the grid). The available energy is calculated based on the installed capacities of the reported technologies and wind & solar load factor profiles.

PECD hydro inflows

The visual shows the minimum, median and maximum yearly energy content of water inflows of hydro storage technologies, which is either injected in the grid or being stored, under all climate years, as well as the derived load factors (assuming 100% of the available energy is injected in the grid).

The load factor is defined as the water inflow summed to the difference in reservoir levels between the beginning and end of the year over the energy produced under nominal turbining assumptions over the year. The visual shows the hydro categories run-of-river (RoR) and pondage, traditional reservoir and open pumped storage plant (Open PSP).

Storage capacities

The visual shows the energy content of the storage capacities (stacked bars) expressed in TWh for each storage technology, as well as the total injection capacity of these technologies (dots) expressed in GW per market zone and target year.

NTC boxplot visual

The visual shows the Net Transfer Capacities at the import and export sides per country and target year. The boxplots represent the distribution of the maximum hourly NTC capacities for a given country, TY and export/import direction across all the CYs. The green ranges represent the 1st quartile value, the median and the 3rd quartile value respectively, the lower and upper hinges represent the lowest and highest values within 1.5 times the interquartile range from the 1st quartile and the 3rd quartile value respectively. The values not comprised between the hinges are considered as outliers and plotted with dots.

EVA capacity scope

The visual illustrates the installed capacity subject to the EVA assessment as well as the capacity excluded from it.

Input Data

All input data and assumptions can be consulted in detail in the files below and in ERAA 2025 Annex 1.

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