| European Gas Import Option | European Supply Augmentatation | LNG Import | Central Asian Gas Import | Mediterranian Gas Import |
| Current R-to-P ratio of Supplier | Low | High (including Middle East) | Reasonable | High |
| Proximity to Europe (Cost of delivering gas to European Consumers) | Closest | Farthest | Far | Close |
| Sustainability | Low | Low | High | Highest |
| Political (including geo-political and Security) Factors | Insignificant | Insignificant | Significant | Significant but Manageable |
| Techno-Economic Viability of Sustainable Gas Supplies | Feasible | Need Further Analysis | Need Further Analysis | Feasible |