Projected Costs of Generating Electricity - OECD Nuclear Energy ...

External costs for electricity production by different fuel cycles
Fuel cycles Unit Coal and lignite Natural gas Nuclear Hydro
Mean value of external costs given by
implementation of ExternE Project of EU 15 €/MWh 40.8-73.3 12.5-23.3 3.9 3.8-4.8
Adjusted external costs at currency rate
of 41 SKK/Euro SKK/MWh 1 673-3 005 512-955 160 154-195
Mean value included in study SKK/MWh 2 339 734 160 175
The mean value of external costs for nuclear power stations is 160 SKK/MWh and is approximately
on the level of renewables (hydro). For the power stations burning coal and lignite, the mean value of
2 339 SKK/MWh is nearly 15 times higher and that for natural gas is five times more than for nuclear
power stations.
Figure 1a shows the comparison of costs for different annual time of plant utilisation. Clearly, the
lowest electricity generation cost is for the Bohunice NPP V-1. The production cost from completion of
Mochovce units 3 and 4 (MO-3 & 4) also are in the lower range of expected costs. For the fluidised-bed
unit and CCGT, the costs are more than twice that for electricity generation in the NPP V-1. This results
partly from the more than two- increase of natural gas price after the Slovak gas industry privatisation.
After taking into account the external costs, the generation cost advantage of the NPPs was increased in
comparison to the sources using fossil fuels (Figure 1b).
The time distribution and component structure of costs for Mochovce units 3 and 4 and for CCGT
plants are shown in Figures 2a and 2b, respectively.
SKK/MWh
Figure 1a – Generation costs at different annual hours of plant utilisation
(not including external costs)
20 000
15 000
10 000
CCGT unit
Fluidised bed unit
Completion of Mochovce 3 and 4
NPP V1 Bohunice
2.08 x V1
2.03 x V1
1.69 x V1
5 000
1.0 x V1
0
0 2 000
4 000 6 000
7 000 8 000 Hours/year
144