Machine Learning-Based Approach for Hydrogen Economic Evaluation of Small Modular Reactors

Table 2

Input parameters for hydrogen economic evaluation [22, 23].

Plant type	SMART	NPM
Financial parameters
Discount rate (%)	3 or 5	3 or 5
Inflation rate (%)	1 or 3	1 or 3
Borrowing interest (%)	5 or 10	5 or 10
Tax rate (%)	5 or 10	5 or 10
Depreciation period (years)	20 or 40	20 or 40
Equity (%)	30 or 50 or 70	30 or 50 or 70
Debt (%)	30 or 50 or 70	30 or 50 or 70
NPP parameters
Thermal rating (MWth/unit)	330	200
Heat for hydrogen plant (MWth/unit)	165 or 330	100 or 200
Electricity rating (MWe/unit)	0 or 165	0 or 100
Number of units	1 or 2	1 or 2
Initial fuel load (kg/unit)	15263	9250
Annual fuel feed (kg/unit)	1695.89	1541.6
Overnight capital cost (USD/unit)	2.52 × 10^8	1.53 × 10^8
Capital cost fraction for electricity-generating infrastructure	0 or 25	0 or 25
Fuel cost (USD/kg)	1958	1958
Operations and maintenance cost (% of capital cost)	2 or 4	2 or 4
Decommissioning cost (% of capital cost)	10 or 20	10 or 20
Hydrogen generation plant parameters
Heat generation per unit (kg/year)	2.90 × 10^7	1.80 × 10^7
Heat consumption (MWth/unit)	165 or 330	100 or 200
Electricity required (MWe/unit)	0	0
Number of units	1	1
Overnight capital cost (USD/unit)	1.94 × 10^8	1.18 × 10^8
Energy usage cost (USD)	0	0
Operations and maintenance cost (% of capital cost)	2 or 4	2 or 4
Decommissioning cost (% of capital cost)	10 or 20	10 or 20
Hydrogen storage
Storage capacity (kg)	5.56 × 10^5	3.45 × 10^5
Compressor cooling water (L/hr)	1.72 × 10^5	1.07 × 10^5
Electricity required (kWe)	7.58 × 10^5	4.70 × 10^5
Overnight capital cost (USD)	8.16 × 10^7	5.58 × 10^7
Compressor operating cost (USD)	3.98 × 10^6	2.47 × 10^6
Operations and maintenance cost (% of capital cost)	2 or 4	2 or 4
Decommissioning cost (% of capital cost)	10 or 20	10 or 20
Hydrogen transport
Distance for transport (km)	200	200
Overnight capital cost (USD)	1.07 × 10^8	9.19 × 10^7
Electricity charges (USD)	2.77 × 10^6	1.72 × 10^6
Operations and maintenance cost (% of capital cost)	2 or 4	2 or 4
Decommissioning cost (% of capital cost)	10 or 20	10 or 20
Chronological details
Construction years	3 or 5	3 or 5
Operating years	40 or 60	40 or 60