Open Access

Table 13

Sensitivity of scenario cost to parameters.

Parameter class Parameter Scenarios No carbon price Scenarios $70 per tonne carbon price


    BAU 52% RE 99.9% RE BAU 52% RE 99.9% RE
  Discount rate 22.4 23.3 39.0 14.8 18.6 38.3
Investment environment Inflation rate 18.7 16.8 5.52 12.6 13.5 5.46
  Carbon price 33.0 19.9 1.87
  Rooftop solar PV 4.49 8.50 35.0 3.06 6.74 33.8
  Wind 3.08 7.58 12.8 2.10 6.01 12.3
Capital cost Storage   1.31 17.2 1.04 16.5
  Efficiency 1.45 9.80 3.83 0.99 7.77 3.70
  Coal 12.7 8.64
  Gas 17.8 16.2 4.01 11.4 13.0 4.92
  Rooftop solar PV 1.37 2.60 10.7 0.94 2.06 10.3
  Wind 0.85 2.08 3.51 0.58 1.65 3.39
Fixed annual operation and maintenance costs Storage 0.12 1.54 0.09 1.49
  Coal 3.95 2.69
  Gas 5.12 4.65 1.15 3.26 3.74 1.41
  Wind 0.56 1.52 2.52 0.41 1.10 2.46
  Storage 0.04 0.18 0.03 0.17
Variable operation and maintenance costs Coal 1.66 1.13
  Gas 0.76 1.16 0.00 0.52 0.93 0.003
  Coal fuel cost 17.9 12.2
  Gas fuel cost 27.7 42.2 0.04 18.8 34.1 0.10
  Roof-top solar PV –1.81 –3.43 –14.1 –1.35 –2.98 –15.1
  Wind –1.24 –3.19 –5.49 –0.87 –2.72 –5.63
Plant lifetime Storage –0.73 –9.42   –0.59 –9.41
  Efficiency –0.86 –5.80 –2.27 –0.59 –4.60 –2.21
  Coal 2.06 1.39
  Gas 3.07 8.64 –1.44 2.33 7.01 –1.54

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