The WACC of Alliant Energy Corp (LNT) is 5.8%.
| Range | Selected | |
| Cost of equity | 6.00% - 7.80% | 6.90% |
| Tax rate | 7.30% - 11.00% | 9.15% |
| Cost of debt | 4.10% - 4.90% | 4.50% |
| WACC | 5.1% - 6.4% | 5.8% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.46 | 0.52 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.00% | 7.80% |
| Tax rate | 7.30% | 11.00% |
| Debt/Equity ratio | 0.68 | 0.68 |
| Cost of debt | 4.10% | 4.90% |
| After-tax WACC | 5.1% | 6.4% |
| Selected WACC | 5.8% | |