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Table 3 Typical values of different parameters used in economic analysis

From: Performance study and economic analysis of photo-voltaic thermal system under real-life thermal loads in tropical climate

Parameter

Value

Annual O&M cost

1% of total investment cost

Decommissioning cost

5% of total investment cost

Salvage cost

5% of total investment cost

Lifetime of system

25 yr

Discount rate

5%

Inflation rate

2.4% yr−1

Degradation rate [11,12,13]

0.75% yr− 1

Electrical tariff [14]

SGD 0.2634 kWh− 1