The WACC of Ameren Corp (AEE) is 5.7%.
| Range | Selected | |
| Cost of equity | 5.90% - 8.30% | 7.10% |
| Tax rate | 13.90% - 14.40% | 14.15% |
| Cost of debt | 4.00% - 4.80% | 4.40% |
| WACC | 4.9% - 6.6% | 5.7% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.44 | 0.62 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 5.90% | 8.30% |
| Tax rate | 13.90% | 14.40% |
| Debt/Equity ratio | 0.72 | 0.72 |
| Cost of debt | 4.00% | 4.80% |
| After-tax WACC | 4.9% | 6.6% |
| Selected WACC | 5.7% | |