Ann: Investor Presentation - Shareholder Webinar, page-306

NPV can change considerably based on the sensitivity analysis.

Sensitivity analysis
To obtain further confidence in the Project’s financial returns and value, a sensitivity analysis was
conducted by varying key input values and recalculating NPVs.
The results of the sensitivity analysis for NPV and IRR, respectively, are presented in Figure 12 and Figure 13.
The results show that the Project’s value is most sensitive to the following changes:
Product prices - a 10% movement in prices over the period of analysis increases or reduces the NPV
by 26%.
AUD:USD exchange rate - A 10% depreciation increases NPV by 20%, a 10% appreciation decreases
NPV by 17%.