Gross consumptionPower consumed across France, including Corsica and factoring in losses was lower than in 2019 in all the French regions, due to the health crisis. Declines ranged between 3.1 % (in Brittany, where gross consumptionPower consumed across France, including Corsica and factoring in losses fell 0.7 TWh) and 6.6 % (Ile-de-France, where gross consumptionPower consumed across France, including Corsica and factoring in losses ended the year down by more than 4.5 TWh). The health crisis had an uneven effect on electricity consumption in the different regions, notably because the breakdown of consumption by sector changes from one region to the next.

Between 2006 and 2019, trends in adjusted consumptionPower that would have been consumed if temperatures had been the same as reference temperatures, and if there was no 29th day in February for leap years in France were mixed, due to a variety of factors, one of which was demographics. This was the case for instance in Occitanie, where electricity consumption increased by 9.5 % while the population grew by 10.3 % in 2006-2019 (Insee data).

The Grand Est region saw the steepest decrease in consumption in France (more than 11 %), driven by deindustrialisation.

The Hauts-de-France, Grand Est and Auvergne-Rhône-Alpes regions are home to the largest number of industrial sites connected to the transmission grid. Due to the health crisis, power demand in heavy industryFinal customers getting electricity directly from the transmission system operator declined sharply across all these regions relative to 2019. Decreases ranged between 5.6% (Pays de la Loire, where consumption contracted by 0.1 TWh) and 14.6% (in Occitanie, which saw a 0.3 TWh decline). In Auvergne-Rhône-Alpes, consumption fell by more than 1.5 TWh. Power consumption for rail transport dropped by between 13 and 26% year-on-year, depending on the region, with decreases exceeding 0.3 TWh in Hauts-de-France and Ile-de-France; year-on-year declines in power consumption by the steel industry ranged between 8 and 34% depending on the region, and exceeded 0.6 TWh in Auvergne-Rhône-Alpes and Hauts-de-France