Link to the study - European Parliament - Europa

Policy Department D: Budgetary Affairs
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The mentioned 9 reactors are of four different types (see Table 3: Development in cost estimations for
the 9 reactors (plus storage facility St. Laurent) in million EUR). Cost comparison is therefore difficult
because of different technical installations etc. The last estimates showed for example that the costs
for dismantling of Chooz A (PWR type) are equivalent to 68 % of the average costs for the Brennilis
HWR.
The total dismantling costs for the 9 reactors with ancillary facilities were estimated at EUR 4 billion in
2010 7 . Of these total costs only EUR 1.5 billion were covered by set-aside funds, the remainder was
not covered at the end of 2010 (CdC 2012).
The parameters and the approach for the costs estimation by EDF
To minimize the uncertainties in the costs estimates, the dismantling costs are calculated as estimates
drawn up and regularly revised by EDF. The estimates are based on all the technical, financial and
contractual data available at the time at which they were made. The operations to be carried out are
listed and the costs for each operation are evaluated using parameters relating to the quantities to be
processed, unit costs and completion times. Cost brackets for all these parameters are determined
and a probability of occurrence is assigned to them. A subsequent sensitivity analysis of these
parameter helps to identify the degree of uncertainty. From one revision to the next, information
from the site where the dismantling is in progress is extrapolated appropriately. Evaluation using data
gathered in the previous and current years for the engineering works, site and waste costs is
subsequently carried out.
In Table 3 the developments of the cost estimations for the 9 reactors (plus the storage facility
St. Laurent) to be decommissioned are listed for demonstration (in CdC 2012 according to EDF data).
7
The total estimated amounts for dismantling of the reactors alone (without Superphénix) represents
approx. 43 % of their construction costs (EUR 6.1 billion in 2010, overnight costs + interim interests during
construction). See CdC 2012.
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