|
Mitigation Option
|
Net Implementation Costa
|
Potential Emissionb Reduction
(t CO2 equivalent per year)
|
|
Building energy efficiency
|
Net benefit
|
900 millionc
|
|
Vehicle efficiency (not fleet change)
|
Net benefit
|
300 million
|
|
Industrial energy management
|
Net benefit to low cost
|
500 million
|
|
Transportation system management
|
Net benefit to low cost
|
50 million
|
|
Power plant heat rate improvements
|
Net benefit to low cost
|
50 million
|
|
Landfill gas collection
|
Low cost
|
200 million
|
|
Halocarbon-CFC usage reduction
|
Low cost
|
1400 million
|
|
Agriculture
|
Low cost
|
200 million
|
|
Reforestation
|
Low to moderate costd
|
200 million
|
|
Electricity supply
|
Low to moderate costd
|
1000 millione
|
|
NOTE: Here and throughout this report, tons are
metric.
|
|
aNet
benefit = cost less than or equal to zero
|
|
Low cost = cost between $1 and $9 per ton of
CO2 equivalent
|
|
Moderate cost = cost between $10 and $99 per ton
of CO2 equivalent
|
|
High cost = cost of $100 or more per ton of
CO2 equivalent
|
|
bThis
''maximum feasible" potential emission reduction assumes 100
percent implementation of each option in reasonable applications
and is an optimistic "upper bound" on emission reductions.
|
|
cThis
depends on the actual implementation level and is controversial.
This represents a middle value of possible rates.
|
|
dSome
portions do fall in low cost, but it is not possible to determine
the amount of reductions obtainable at that cost.
|
|
eThe
potential emission reduction for electricity supply options is
actually 1700 Mt CO2 equivalent per
year, but 1000 Mt is shown here to remove the double-counting
effect (see p. 62 for an explanation of double-counting).
|
