Transcribed
Change in World CO2 and CH4 emissions in the 4-for-2°C Scenario policy measure
Figure 2.4 Change in world CO, and CH, emissions in the 4-for-2 °C Scenario by policy measure relative to the New Policies Scenario, 2020 Savings: 3.1 Gt CO,-eq Fossil-fuel subsidies 12% 6% Road transport 14% Industrial motors Upstream CH. reductions 18% Efficiency 49% 14% Appliances and lighting 15% Heating and cooling 21% Power generation
Change in World CO2 and CH4 emissions in the 4-for-2°C Scenario policy measure
shared by W.E.R.I on Jul 02
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---- Abatement to 2020 by policy measure ---
In the 4-for-2°C Scenario, energy efficiency is the largest contributor to the reduction in
global greenhouse-gas emissions, resulting in savings of 1...
.5 Gt CO2-eq in 2020, or almost
half of the total abatement relative to the New Policies Scenario (Figure 2.4). As indicated
above, while there is a rate of efficiency policies capable of reducing energy consumption
and therefore emissions, we have focused on just four key measures on the basis that they
can be quickly implemented and that the mechanics of implementation have already been
developed in numerous countries. The selected policies are applied to new equipment and
technologies: they exclude the early retirement of existing stock.
Key energy efficiency measures include:
° More efficient heating and cooling systems in residential and commercial buildings
through minimum energy performance standards (MEPS) for new equipment, and
technology switching, such as through greater use of heat recovery and better use of
automation and control systems.
° More efficient appliances and lighting in residential and commercial buildings.
° Use of more efficient electric motor systems in industrial applications, such as pumping,
compressing air, and other types of mechanical handling and processing.
° Fuel-economy standards and fuel-economy labelling for new passenger light-duty
vehicles (PLDVs) and freight trucks in road transport.
Among these measures, those targeting heating and cooling, appliances, lighting and
industrial motors have a similar effect on reducing greenhouse-gas emissions, each
contributing around 30% of the additional efficiency-related savings. Policies targeting road
transport make up a smaller share of abatement, partly because of the lead times required
for more efficient vehicles to penetrate the vehicle stock and because the New Policies
Scenario takes into account the numerous policies already in place to improve efficiency in
road transport (thus reducing the scope for further gains in the 4-for-2 °C Scenario).
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