The WACC of Spark Energy Inc (SPKE) is 6.4%.
| Range | Selected | |
| Cost of equity | 6.00% - 8.10% | 7.05% |
| Tax rate | 18.00% - 19.80% | 18.90% |
| Cost of debt | 4.00% - 5.10% | 4.55% |
| WACC | 5.5% - 7.3% | 6.4% |
| Category | Low | High |
| Long-term bond rate | 3.2% | 3.7% |
| Equity market risk premium | 4.2% | 5.2% |
| Adjusted beta | 0.68 | 0.75 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.00% | 8.10% |
| Tax rate | 18.00% | 19.80% |
| Debt/Equity ratio | 0.25 | 0.25 |
| Cost of debt | 4.00% | 5.10% |
| After-tax WACC | 5.5% | 7.3% |
| Selected WACC | 6.4% | |