Is an extra hour of sleep a real savings? Next weekend we will save an hour in the night between Saturday 29th October and Sunday 30th October as it will be 3:00 am. This time change introduced in the late 1970s should save energy. And it is useful according to Thierry Breton, European Commissioner for the Internal Market. “Anything that saves energy is fine and therefore I support, in any case in this period, the fact that we have to keep this little effort that we have to make”He said on LCI explaining that even today this measure allows to save energy. Quite a true statement, but to qualify.
If changing the time allows you to save, today they are much more so “modest”, according to the Environment and Energy Management Agency (Ademe), who studied the impact of the time change. The main gain is related to lighting. For example, in 2009, changing the time allowed savings of almost 450 GWh, the equivalent of the lighting consumption of around 800,000 households.
A considerable saving but which will decrease significantly, at least by 25%, in the coming years because lighting, both at home and on the street, consumes less and less energy, in particular thanks to low consumption light bulbs. And not to mention that this winter many municipalities have also chosen to turn off public lighting for part of the night.
As far as summer heating or air conditioning is concerned, the change of hours does not significantly change consumption, explains Ademe. This is what other studies abroad also say. For example, the European Commission estimates that earnings are “marginal”. Calculated Brussels that changing the time saves between 0.5 and 2.5% of the total energy consumption of European countries.
in addition to The European Commission wanted to abolish the time change. A draft directive was presented in 2019. The text was to be adopted at the end of 2020, except that in the meantime there was Covid which upset the agenda. Today, with the war in Ukraine, the end of time changes it is no longer a priorityeven if more and more countries in the world such as Turkey, Iceland or Russia, have decided in recent years not to change the time.
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