5
10
15
10%
20%
30%
40%
50%
CO 2 emissions reduction
Energy consumption
(billion kWh)
2
4
6
8
Emission reduction
cost (× 10 -2
USD/k -CO
2 )
Grid
Natural gas
Solar heat
Solar power
Rural biomass
Urban biomass
0
Fig. 7.10 Energy share with various CO 2 emissions reduction ratios and corresponding reduction
costs (Scenario 1)
0
5
10
15
20
10%
20%
30%
40%
50%
CO 2 emissions reduction ratio
Grid
Natural gas
Solar heat
Solar power
Rural biomass
Urban biomass
-4
0
4
8
E
n
o
i
t
p
m
u
s
n
o
c
y
g
r
e
n
(billion kWh)
n
o
i
t
c
u
d
e
r
n
o
i
s
s
i
m
E
cost (×10 -2
USD/kg CO
2 )
Fig. 7.11 Energy share with various CO 2 emissions reduction ratios and corresponding reduction
costs (Scenario 2)
7 Local Low-Carbon Society Scenarios of Urban-Rural Linkage
147