SODBatch A&B SPM Comments co-chair response final ... - ipcc-wg3

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IPCC WGIII Fourth Assessment Report, Second Order Draft
1051 sentence more robust and supported by a larger amount of
literature, including IEA's Energy Technology Perspectives 2006.
SPM-
1052
SPM-
1053
SPM-
1054
SPM-
1055
(Cédric PHILIBERT, International Energy Agency)
26 A 14 37 14 37 "…….carbon prices of US$ 20 to 25 per tCO2-eq can begin". Is
US$ 20-25 /t CO2 a global average, is it possible to give separately
for developing and industrialized countries.
(Government of India)
26 A 14 37 14 38 There is no such thing as a "zero carbon power supply" in the
context of CCS. CCS may reduce CO2 emissions by CO2-capture
by 60% to 95%, but a certain percentage of CO2 will never be
captured due to ever increasing costs for the next marginal unit of
CO2. Furtheron the signficant up- and down-stream emissions for
mining and transport of resources and products as well as the
increased demand for fuel due to CCS (increase by approx. one
third) do not allow for a term such as "zero carbon power supply".
Thus "large-scale" and "zero carbon power supply" should always
be replaced in the whole report with a more suitable term such as
"CCS-power plant".
(Government of Germany)
26 A 14 38 14 39 A crucial determining factor for the success and suitability of CCS
as a climate change mitigation technology will depend on sufficient
and safe storage reservoirs in vicinity to the CO2 point sources.
Thus the following sentence should be added in line 38 and replace
the sentence in line 38-39. "The availability of suitable geological
storage sites for captured CO2 varies across different regions and
may act as a limiting factor in some parts of the world. However
Carbon Capture and Storage technologies hold valuable potential
and additional incentives related to enabling regulations are also
important."
(Government of Germany)
26 A 14 39 14 40 Make this sentence ('However, additional…………..insufficient') a
separate paragraph, and add to it the sentences: 'Market signals,
dependent on regulations and/or financial incentives such as permit
trading, are not sufficient to motivate the development of
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
Response suggested by cochairs
REJ; there is no difference
CHECK ch 11
REJ; also renewables are meant
to be covered; add “(near)”
before “zero-emissions ..”
REJ; not only CCS is meant,
also other non carbon options
REJ; no space
Action
for
chapter
11
Considerations
by the writing
team
Page 283 of 348