最新加勒比一本道综合

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Beyond 2040

Beyond 2040: the challenge is to reduce hard-to-abate carbon emissions

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In the RT scenario, CO2 emissions from energy use by 2040 fall by around 45% relative to current levels. Although such a reduction represents considerable progress, it implies that a significant level of CO2最新加勒比一本道综合 emissions (around 18 Gt) would still remain.

RT?scenario in 2040: energy demand and CO2
RT scenario in 2040: energy demand and CO2
* Industry includes non-combusted sector
RT?scenario in 2040: CO2?emissions by fuel and sector
RT scenario in 2040: CO2 emissions by fuel and sector

最新加勒比一本道综合Looking beyond 2040, in order to meet the Paris climate goals, these remaining emissions would need to be greatly reduced in the second half of the century and offset with negative emissions.

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最新加勒比一本道综合These remaining emissions are concentrated in transport (7 Gt) and industry (5 Gt), with smaller contributions from power (3 Gt) and buildings (2 Gt).

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最新加勒比一本道综合In transport, the majority of the emissions stem from the continuing use of oil (45 Mb/d) in 2040. More than half of this consumption stems from the use of oil in cars and light and medium-duty trucks which can be gradually electrified overtime. But the remainder is concentrated in modes of transport which are harder to electrify: including elements of heavy-duty trucks, aviation, and marine.

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In industry, much of the CO2最新加勒比一本道综合 emitted stems from the continuing use of coal (2 Gt) and gas (2 Gt) in activities that are hard and/or expensive to abate, either because they require high temperatures or where carbon is inherently involved in the production process, such as iron and steel, chemicals and cement.

A further?substantial reduction in emissions is likely to require a wide range of?improvements and changes

A further?substantial reduction in net CO2?emissions from energy use beyond 2040 would?likely require further improvements and changes across a number of fronts.

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A key development would be an (almost) complete decarbonization of the power sector, together with greater electrification of end-use activities. Decarbonization of the power sector would require more renewables – supported by improvements in energy storage and demand-side-response to ease the issues associated with intermittency – plus more CCUS in conjunction with natural gas and coal.

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But the IEA recently estimated that only around two-thirds of final energy use has the technical potential to be electrified, highlighting the need for other lower-carbon forms of energy (and energy carriers) for the remaining one-third. This includes hydrogen produced from decarbonized sources, bioenergy, and gas/coal/oil with CCUS.

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Two other over-arching developments are also likely to be important:

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  • Further gains in resource efficiency: including both increased use of circular economy techniques to mitigate demand for new materials and products, and accelerating gains in energy efficiency;
  • Greater adoption of carbon removal techniques: including CCUS and negative emissions technologies, such as land carbon, direct air capture and BECCS.

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