| Contingency | Difference in losses from System Healthy [MW] | Difference in losses based on System Healthy [MW] |
| System Health | ||
| Alpha-Beta 765 | 94 | 8% |
| Perseus-Hydra 765 | 129 | 10% |
| Beta-Perseus 400 | 3 | 0% |
| Beta-Hydra 400 | 20 | 2% |
| Perseus-Grootvlei 400 | 15 | 1% |
| Perseus-Hydra 400 | 18 | 1% |
| Hydra-Droёrivier 400-3 | 24 | 2% |
| Droёrivier-Proteus 400 | 38 | 3% |
| Droёrivier-Bacchus 400 | 32 | 3% |
| Droёrivier-Muldersvlei 400 | 71 | 6% |
| Muldersvlei-Bacchus 400 | 55 | 4% |
| Muldersvlei-Acacia 400 | 5 | 0% |
| Acacia-Koeberg 400 | 8 | 1% |
| Acacia-Juno 400 | 20 | 2% |
| Hydra-Kronos 400 | 147 | 12% |