GC000500T140 page 3
Economic assumptions
• Real discount rate (weighted average cost of capital) of 2.6% can be used for NPV analysis
• High level generation technology installed cost component assumptions:
Sensitivity scenario
Low High
Solar installation - fixed project
costs (civil, connection, network
augmentation, protection,
control integration etc)
$500,000 $1,000,000
Solar installation – variable per
kW of solar capacity installed
$1500 / kW $3000 / kW
Operational cost for the solar
farm
$10,000 per year $25,000 per year
Wind installation – fixed costs
(civils, approvals, connection,
control, integration)
$1,000,000 $2,000,000
Wind installation – variable per
kW of wind capacity installed
$1,000 / kW $3,000 / kW
Operational cost – wind
installation
$20,000 per year $50,000 per year
Energy storage – fixed project
costs
$500,000 $900,000
Energy storage – cost per kWh
installed
$600 / kWh $900 / kWh
Operational cost for the energy
storage
$15,000 per year $25,000 per year

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