| Method/ Tool | Type | Defines Problem | Defines all causal relationship | Provides a causal path to root cause | Explains how solutions prevent recurrence |
| Events and causal facors chart | Method | Yes | to some extent | No | No |
| Change Analysis | Tool | Yes | No | No | No |
| Barrier analysis | Tool | Yes | No | No | No |
| Tree Diagram | Method | Yes | No | No | No |
| Why Why Chart | Method | Yes | No | Yes | No |
| Pareto Analysis | Tool | Yes | No | No | No |
| Story telling method | Method | to some extent | No | No | No |
| Fault Tree | Method | Yes | Yes | Yes | Yes |
| FMEA | Tool | Yes | No | to some extent | to some extent |

for knowledge support in implementing Energy Management System to ISO 50001: 2018
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