The WACC of Proton Motor Power Systems PLC (PPS.L) is 4.7%.
| Range | Selected | |
| Cost of equity | 12.10% - 57.40% | 34.75% |
| Tax rate | 19.00% - 19.00% | 19.00% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 4.2% - 5.1% | 4.7% |
| Category | Low | High |
| Long-term bond rate | 4.0% | 4.5% |
| Equity market risk premium | 6.0% | 7.0% |
| Adjusted beta | 1.36 | 7.5 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 12.10% | 57.40% |
| Tax rate | 19.00% | 19.00% |
| Debt/Equity ratio | 48.11 | 48.11 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 4.2% | 5.1% |
| Selected WACC | 4.7% | |