Ase Study: Bangladesh Power System Expansion calculations only

Hello. I have a very simple investment project case study. The task and case study itself is attached. Please pay attention to all details. This is very important for me. This is not for academic purposes. This task is given by my employee. Really hope you can finish it within 8 hours.

admins comments: this is not an essay, it is the finance calculations. No need for the essay, some kind of explanations. only the spreadsheet from Excel with calculations!!!