Postscript: placing a value on
the environment
78. In previous reports we have expressed our concern
about the emphasis which the Treasury has increasingly been placing
on valuing environmental impacts in monetary terms.[57]
Such an emphasis is reflected throughout the Cabinet Office
memorandum and in the RIA guidance itself. Indeed, RIAs are based
so fundamentally on the concept of financial valuation that no
consideration is given to alternative methods of valuing environmental
impacts.
79. In this context, we want to make here only three
brief points. The first relates to scientific uncertainty and
risk. With regard to climate change, there is now a growing
consensus that an environmental limit exists, beyond which potentially
catastrophic impacts might occur if greenhouse gas emissions are
not reduced drastically by the end of this century.[58]
However, the Government's valuation of carbon for appraisal purposes
takes no account of the risks of catastrophic changes to the climate.
Given the recent evidence that such risks might be more serious
than previously anticipated, we await with particular interest
the outcome of the inter-departmental review of the cost of carbon
which is currently being conducted and is indeed overdue. With
regard to the loss of biodiversity, the nature of any environmental
limit is not yet clear. However, the recent UN Millennium Ecosystem
Assessment report suggests that the consequences arising from
the catastrophic loss of biodiversity may be equally serious.
80. The second point relates to the fundamental tension
between economic appraisal and the time spans over which environmental
impacts occur. The time value of money and the discounting of
future costs and benefits may be appropriate for business investment
decisions spanning a decade or two. But beyond 40 or 50 years,
uncertainty becomes so great that no meaningful appraisals can
be conducted. How then is one to value a potentially catastrophic
impact which might occur in 100 or 200 years time? Indeed, it
is precisely because conventional economics 'runs out' that governments
need to provide long-term policies and signalssuch as the
UK's adoption of a 60% carbon reduction target for 2050. It is
a measure of how inadequate RIAs are in this respect that the
guidance suggests a 10 year discount period is generally appropriate.
81. Our third point takes this argument further.
We see fundamental problems in reconciling the short-termism implicit
within economic appraisal processes and preference-based valuations
with the long-term nature of sustainable development and the need
to abide by environmental limits. There are major conceptual
problems in relying on preference-based valuations and such values
will in any case vary depending on the degree of knowledge and
awareness of environmental issues. We would be interested, for
example, to see what valuation the public might place on the possible
extinction of a third of all species over the next hundred years.
Moreover, as we have previously suggested, the preferences and
valuations people expresswhether directly or indirectlycould
change dramatically as climate change bites deeper, with large
increases in the associated environmental costs.[59]
82. For these reasons, we agree with FoE's verdict:
Future generations get an all round bad deal from
appraisal such as RIA: longer-term, irreversible environmental
impacts that will impact most on future generations are marginalized
by the process; future generations are not considered in appraising
social impacts such as on distribution; estimates of impacts on
business routinely ignore the ability to innovate; and we still
use a discount rate that institutionalises, as the Green Book
puts it, the view that "society as a whole prefers to receive
goods and services now rather than later, and defer costs to future
generations". [60]
Indeed, it seems to us that a blinkered focus on
aggregating all impacts and balancing them in monetary terms represents
a major step backwards in the development of integrated policy
appraisal approaches. In this respect, we found the comments of
the IEEP particularly apposite:
Therefore monetisation may create as many problems
as those it may appear to solve. Perhaps the major challenge for
both the UK and EU is how to ensure that qualitative information
is given sufficient weighting in relation to quantitative data
in policy appraisal/impact assessments. The use of other methodologies,
such as critical thresholds as a way of limiting environmentally
unsustainable trade-offs, should also be explored more fully.
[61]
83. The primacy which the Cabinet Office memorandum
and the RIA guidance place on monetarising environmental impacts
is fundamentally mistaken. It is simply not possible, for example,
to quantify meaningfully in financial terms the value of the climate
to us: in that sense, it is literally priceless. In reverting
to a crude aggregation of financial values to decide between competing
policy objectives, the Government has failed to face up to the
challenge of developing an approach to integrated policy appraisal
which places adequate weight on non-financial impacts and environmental
limits.
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