Reducing energy consumption by 10% by 2024, an achievable goal according to the négaWatt association

by time news

How to reduce France’s energy consumption by 10% by 2024? The government, which has set this objective to face the double challenge of the energy and climate crises, should present a first action plan on October 6. To provide food for thought, the négaWatt association, which has been working on this topic for twenty years, has quantified for the first time the potential impact of fifty measures, mainly in the building sector. This sector is strategic: residential buildings represent 30% of energy consumption (450 terawatt hours) and the tertiary sector 16% (245 TWh). On the front line faced with the risk of supply disruption, it is also the one for which negaWatt has the most expertise and feedback.

According to the association, which publishes the result of its work on Tuesday, September 27, the 10% objective is quite achievable. “We could even go further, notes Stéphane Chatelin, its director. Without looking at the industrial sector, we have achieved a 13% reduction in the combined consumption of gas, electricity and oil with this first series of measures in the building sector and three measures in transport. But what is at stake will be the conditions for implementing them. »

These fifty measures were not selected at random: all can be quantified, implemented in the short term, with zero or low cost, and be acceptable to the population. “Even if our figures are based on calculations and concrete cases, these remain hypotheses with a margin of uncertainty”, says Samuel Martin, member of the association and of a design office specializing in energy management.

19°C instead of 21°C

Among the main sources of savings identified in the residential sector, first and foremost is heating. If 80% of housing – negaWatt automatically excludes those of the elderly, sick, etc. – were heated to 19°C, as already provided for in the energy code, 23.5 TWh could be saved, for example. According to various studies, households today set their radiators at an average of 21°C.

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Reductions in consumption “extremely important” (around 18 TWh) are also possible for hot water, in particular by installing flow limiters on taps and insulating covers on domestic hot water tanks. “We were able to make masks during the pandemic, we can make insulating jackets and highlight them in consultation with manufacturers”dear Samuel Martin.

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