Concept:
A project's cumulative cash flow tracks the net sum of all cash outlays and inflows from day zero through the end of the project life.
- During the design and construction phases, cumulative cash flow is negative because capital is spent without generating revenue.
- Once production starts, the plant generates positive net cash inflows, causing the cumulative cash flow curve to trend upward.
Step 1: Identifying the break-even condition.
The point where the rising cumulative cash flow curve crosses the zero axis is defined as the break-even point. At this exact moment, the cumulative revenues generated by operations exactly equal the total capital expenditures invested in the project up to that date, bringing the net cumulative cash flow balance to exactly zero. This definition matches option (2).