Just started a new job and have been asked to write a guide on LCC for Oil and gas facility
Re LCC articles never talk about estimating costs year2, year3 etc. Do you take say 10% interest for year 2 and repeat for yr 3. then if you discount by 10% you are back to square 1
so why not estimate all costs in present day.
if on another project we have historical costs for past 5 years I accept can use the DF to bring to today.

Past records are avaialble with Finance, isn't it?

I suspect there would be a life cycle costing before the investment made, won't it?