Tribune. The crisis caused by Covid-19 has resulted in a slowdown in economic activity and an unprecedented drop in demand for electricity. In this context, if the increase in the share of solar and wind energy in electricity production has been a good thing, it has however weakened the electricity system, according to France Stratégie. Indeed, while the increase in the variability of production, due to the intermittence of these energies, requires an increase in flexible controllable sources, the drop in demand leads, on the contrary, to the significant shutdown of conventional power plants. flexible, those that quickly bring the power grid back to balance.

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As electricity consumption is resuming its normal course, it will be necessary, during the expected review of the multi-year energy program, to take into account this need to optimize the balance of controllable and non-controllable energies, without forgetting the requirements. reindustrialisation based on regional dynamics.

Isn’t it time, in this context, to rethink a discreet and clean energy that provides an ideal response to the two needs of reindustrializing and controlling spending? This energy is hydroelectricity. A renewable and controllable source, it secures the network supplied by a growing share of renewables with intermittent production. With a very limited environmental footprint, it does not emit greenhouse gases.

Strong demand

Too forgotten because they have been part of our familiar landscape for more than half a century, large dams have contributed to the development of their host territories, providing, among other things, jobs and induced activities in tourism and irrigation. . And they must continue to do so tomorrow.

Hydropower is also part of the future by innovating to meet the new challenges of:

– the increase in global electricity demand supplied to the tune of 15% by hydroelectricity, the capacity of which will increase by 530 GW by 2040, according to the IEA; flexible, secure and responsive management to supply the network according to its needs;

– flexible, secure and responsive management to supply the network according to its needs;

– the essential storage of electricity via pumped energy transfer stations (STEP), which will continue to be the primary means of storage for a long time to come. It can be increased by the development of certain existing sites at a lower economic and environmental cost;

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