of energy from wood to the sun can lower disease and ogies and processes generating few GHG emissions.
death rates by cutting indoor air pollution, reducing the An effective carbon-price signal could realize signifi-
workload for women and children, who have to go out cant mitigation potential in all sectors. Modelling stud-
and collect the fuel wood, and decreasing the unsus- ies show that if global carbon prices were at 20 to 80
tainable use of fuel wood and therefore deforestation. US$ per tonne of CO
2
-eq by 2030 GHG concentrations
in the atmosphere would stabilize at around 550ppm
The role of policy and lifestyle CO
2
-eq by 2100. For the same stabilization level, other
Policies that impose a real or implicit price on GHG studies suggest these price ranges could be lowered to
emissions could create incentives for producers and 5 to 65 US$ per tonne of CO
2
-eq in 2030 as a result of
consumers to invest significantly in products, technol- changes in technologies that will take place by then.
Economic potential for reducing GHG emissions by sector in 2030
Gigatonnes of CO
2
equivalent per year
World total
7
The three columns OECD
indicate different levels of 5.3 - 6.7
1
Economies in Transition
6
investment to reduce
Other countries
emissions in each sector.
5
2.5 - 5.5
1
2.3 - 6.4
1
4
2.4 - 4.7
1
3 1.3 - 4.2
1
1.6 - 2.5
1
2
0.4 - 1.0
1
1
0
<20 <50 <100 <20 <50 <100 <20 <50 <100 <20 <50 <100 <20 <50 <100 <20 <50 <100 <20 <50 <100
Energy supply
2
Transport
3
Buildings Industry Agriculture Forestry Waste
1. Total range of potential in each sector when investing up to US$100 per tonne of CO
2
eq
2. Electricity use is included in end use sectors, not in the energy sector.
3. As transport includes aviation, only global totals are shown. Source: IPCC, 2007.
44 Planet in Peril
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