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Five Zero Net Carbon Emissions? Yes, It Is Possible

  • Anne Hessel , Jean Jouzel and Pierre Larrouturou

Abstract

As early as 2003, France had set itself a target to reduce its carbon emissions by a factor of four. In July 2017, Nicolas Hulot set an even more ambitious goal of ‘carbon neutrality’. To attain carbon neutrality within 30 years, radical changes are needed: all economic sectors must halve their energy consumption and what remains must be ‘carbon-free’ energy. Zero net carbon emissions means the balance of emissions is nil, but this does not mean that no carbon is emitted – that would be utopian. The objective is to reduce our emissions drastically and for the remaining emissions of certain sectors to be absorbed by other sectors; in this way, instead of being released into the atmosphere, methane could be ‘captured’ and used to produce fuel for clean transport.

To achieve this revolution in carbon emissions, the solution can be summarized in three points. We need to:

1. save energy

2. save energy

3. replace fossil fuels with carbon-free energy sources.

Sufficiency and efficiency

Sufficiency and efficiency are the two keywords of the ‘negawatt’ scenario. We might expect that a think tank composed of many experts, engineers, technicians and researchers would extol the merits of a specific technology, but that is not the case. No technical solution will allow us to attain zero net emissions if we are not capable of massively saving energy, thanks to sufficiency and efficiency.

Abstract

As early as 2003, France had set itself a target to reduce its carbon emissions by a factor of four. In July 2017, Nicolas Hulot set an even more ambitious goal of ‘carbon neutrality’. To attain carbon neutrality within 30 years, radical changes are needed: all economic sectors must halve their energy consumption and what remains must be ‘carbon-free’ energy. Zero net carbon emissions means the balance of emissions is nil, but this does not mean that no carbon is emitted – that would be utopian. The objective is to reduce our emissions drastically and for the remaining emissions of certain sectors to be absorbed by other sectors; in this way, instead of being released into the atmosphere, methane could be ‘captured’ and used to produce fuel for clean transport.

To achieve this revolution in carbon emissions, the solution can be summarized in three points. We need to:

1. save energy

2. save energy

3. replace fossil fuels with carbon-free energy sources.

Sufficiency and efficiency

Sufficiency and efficiency are the two keywords of the ‘negawatt’ scenario. We might expect that a think tank composed of many experts, engineers, technicians and researchers would extol the merits of a specific technology, but that is not the case. No technical solution will allow us to attain zero net emissions if we are not capable of massively saving energy, thanks to sufficiency and efficiency.

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