C : Capital cost
CRF : Cost recovery factor
O&M : Operation and maintenance
PVF : Annual fuel cost
Pel_an: Annual electrical energy production
R : Discount rate
N : Expected life time of power plant (Year)
The total investment cost for ISCC is the sum of GT, ST and solar units’ costs. The operation and maintenance costs (O&M) include labour, spare-parts and consumables. The normal maintenance equipment is estimated [17] as follows: