Assumptions and data Value
Life expectancy of solar field (year) 30
Life expectancy of steam unit (year) 30
Life expectancy of gas unit (year) 15
Annual discount rate R (year) 10
Capacity factor 0.8
Direct costs
Specific cost of solar field sol($/kW) 1400
Specific cost of steam unit Cs($/kW) 635
Specific cost of gas unit Cg ($/kW) 235
Contingency (% of direct costs) 10
Indirect costs Engineering, procurement and construction (% of direct costs)
13
O&M cost factor of solar field ksol(%) 1.5
O&M cost factor of steam unit of CC ks(%) 2
O&M cost factor of gas unit kg(%) 5
\(L_{\text{cv}}\) (kJ/kg ) 46595.3
Fuel price ($/MMBTU) based on average 2018 3.16
Emissions ($/ton) 9.9