This excel spreadsheet provides stakeholders with the full WACC model used in preparing the Fact Sheet. 

Please note: A version of this calculator was published on 27 February 2025 that contained an error in Table 4.1 on the “MRP” worksheet for the January 2025 input. 

The error has been corrected for this version of the calculator. 

A change was made to cells C302 of the “MRP” worksheet, changing from 6.2% to 6.1%.

This has impacted some values in the February 2025 biannual market update fact sheet – this has been updated with changes highlighted in light blue in the fact sheet.