input,vendor_a,vendor_b,vendor_c,notes
Normalized capex INR lakh,,,,Include freight erection commissioning testing
Expected downtime hours per year,,,,Use conservative estimate
Downtime cost per hour INR,,,,Production loss or management estimate
Annual maintenance cost INR lakh,,,,Planned plus expected corrective
Expected service life years,,,,Use same horizon for all vendors
Critical spare starter cost INR lakh,,,,Include recommended initial spares
5 year downtime cost INR lakh,,,,Formula: downtime hours x cost/hour x 5 / 100000
5 year maintenance cost INR lakh,,,,Formula: annual maintenance x 5
5 year estimated ownership cost INR lakh,,,,Capex + downtime + maintenance + spares
TCO decision note,,,,Cheapest capex may not be cheapest ownership