ENERGY FROM THE WATER

Hydroelectric reserves

Information based on provisional data from 8 April, 2022
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Regarding hydroelectric reserves, the year 2021 ended with reserves below the statistical average, being a rather dry year. The year 2021 ends with a filling percentage of 36.0%, lower than the value at the end of 2020 (50.8%).

Total hydroelectric reserves

Statistical maximum and minimum: average of the maximum and minimum values of the last 20 years.

The reserves have been above the historical average reserves until the month of April. In February, reserves reach almost the statistical maximum. Since July they have been below the historical average, getting closer to the minimum values over the last two months.

Installed capacity and hydroelectric reserves as of December 31, 2021 by hydrographic basins

Extreme values of mainland reserves

2021 Historic values
GWh Date % Date %
Maximums Annual 7.309 23/02/2021 81,5 May of 1969 92
Hyper-annual 5.468 16/03/2021 57,1 April of 1979 91,1
Combined 1.271 02/03/2021 68,6 April of 1979 86,6
MinimumsAnnual3.21402/11/202135,98 December 201724,1
Hyper-annual2.60707/12/20212,7November of 198317,6
Combined5.95202/11/202132,18 December 201723

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