Table 5 Parameters used for cost–benefit analysis.

From: Analytical study of integrating downhole thermoelectric power generation with a coaxial borehole heat exchanger in geothermal wells

Parameters

Value

Unit

Electric price

1

RMB/kWh

Operation life

18

Year

Annual operation time

6000

Hours

Fixed depreciation period

10

Year

Income tax

25

%

Benchmark return on investment

9

%

Base rate of return

6

%

Discount rate

6

%